text: # Python test set -- part 5, built-in exceptions
  
  import copy
  import os
  import sys
  import unittest
  import pickle
  import weakref
  import errno
  
  from test.support import (captured_stderr, check_impl_detail,
                            cpython_only, gc_collect,
                            no_tracing, script_helper,
                            SuppressCrashReport,
                            import_module, check_warnings,)
  from test.support.os_helper import TESTFN, unlink
  from test import support
  
  class NaiveException(Exception):
      def __init__(self, x):
          self.x = x
  
  class SlottedNaiveException(Exception):
      __slots__ = ('x',)
      def __init__(self, x):
          self.x = x
  
  class BrokenStrException(Exception):
      def __str__(self):
          raise Exception("str() is broken")
  
  # XXX This is not really enough, each *operation* should be tested!
  
  class ExceptionTests(unittest.TestCase):
  
      def raise_catch(self, exc, excname):
          try:
              raise exc("spam")
          except exc as err:
              buf1 = str(err)
          try:
              raise exc("spam")
          except exc as err:
              buf2 = str(err)
          self.assertEqual(buf1, buf2)
          self.assertEqual(exc.__name__, excname)
  
      def testRaising(self):
          self.raise_catch(AttributeError, "AttributeError")
          self.assertRaises(AttributeError, getattr, sys, "undefined_attribute")
  
          self.raise_catch(EOFError, "EOFError")
          fp = open(TESTFN, 'w')
          fp.close()
          fp = open(TESTFN, 'r')
          savestdin = sys.stdin
          try:
              try:
                  import marshal
                  marshal.loads(b'')
              except EOFError:
                  pass
          finally:
              sys.stdin = savestdin
              fp.close()
              unlink(TESTFN)
  
          self.raise_catch(OSError, "OSError")
          self.assertRaises(OSError, open, 'this file does not exist', 'r')
  
          self.raise_catch(ImportError, "ImportError")
          self.assertRaises(ImportError, __import__, "undefined_module")
  
          self.raise_catch(IndexError, "IndexError")
          x = []
          self.assertRaises(IndexError, x.__getitem__, 10)
  
          self.raise_catch(KeyError, "KeyError")
          x = {}
          self.assertRaises(KeyError, x.__getitem__, 'key')
  
          self.raise_catch(KeyboardInterrupt, "KeyboardInterrupt")
  
          self.raise_catch(MemoryError, "MemoryError")
  
          self.raise_catch(NameError, "NameError")
          try: x = undefined_variable
          except NameError: pass
  
          self.raise_catch(OverflowError, "OverflowError")
          x = 1
          for dummy in range(128):
              x += x  # this simply shouldn't blow up
  
          self.raise_catch(RuntimeError, "RuntimeError")
          self.raise_catch(RecursionError, "RecursionError")
  
          self.raise_catch(SyntaxError, "SyntaxError")
          try: exec('/\n')
          except SyntaxError: pass
  
          self.raise_catch(IndentationError, "IndentationError")
  
          self.raise_catch(TabError, "TabError")
          try: compile("try:\n\t1/0\n    \t1/0\nfinally:\n pass\n",
                       '<string>', 'exec')
          except TabError: pass
          else: self.fail("TabError not raised")
  
          self.raise_catch(SystemError, "SystemError")
  
          self.raise_catch(SystemExit, "SystemExit")
          self.assertRaises(SystemExit, sys.exit, 0)
  
          self.raise_catch(TypeError, "TypeError")
          try: [] + ()
          except TypeError: pass
  
          self.raise_catch(ValueError, "ValueError")
          self.assertRaises(ValueError, chr, 17<<16)
  
          self.raise_catch(ZeroDivisionError, "ZeroDivisionError")
          try: x = 1/0
          except ZeroDivisionError: pass
  
          self.raise_catch(Exception, "Exception")
          try: x = 1/0
          except Exception as e: pass
  
          self.raise_catch(StopAsyncIteration, "StopAsyncIteration")
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def testSyntaxErrorMessage(self):
          # make sure the right exception message is raised for each of
          # these code fragments
  
          def ckmsg(src, msg):
              try:
                  compile(src, '<fragment>', 'exec')
              except SyntaxError as e:
                  if e.msg != msg:
                      self.fail("expected %s, got %s" % (msg, e.msg))
              else:
                  self.fail("failed to get expected SyntaxError")
  
          s = '''if 1:
          try:
              continue
          except:
              pass'''
  
          ckmsg(s, "'continue' not properly in loop")
          ckmsg("continue\n", "'continue' not properly in loop")
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def testSyntaxErrorMissingParens(self):
          def ckmsg(src, msg, exception=SyntaxError):
              try:
                  compile(src, '<fragment>', 'exec')
              except exception as e:
                  if e.msg != msg:
                      self.fail("expected %s, got %s" % (msg, e.msg))
              else:
                  self.fail("failed to get expected SyntaxError")
  
          s = '''print "old style"'''
          ckmsg(s, "Missing parentheses in call to 'print'. "
                   "Did you mean print(\"old style\")?")
  
          s = '''print "old style",'''
          ckmsg(s, "Missing parentheses in call to 'print'. "
                   "Did you mean print(\"old style\", end=\" \")?")
  
          s = '''exec "old style"'''
          ckmsg(s, "Missing parentheses in call to 'exec'")
  
          # should not apply to subclasses, see issue #31161
          s = '''if True:\nprint "No indent"'''
          ckmsg(s, "expected an indented block", IndentationError)
  
          s = '''if True:\n        print()\n\texec "mixed tabs and spaces"'''
          ckmsg(s, "inconsistent use of tabs and spaces in indentation", TabError)
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def testSyntaxErrorOffset(self):
          def check(src, lineno, offset):
              with self.assertRaises(SyntaxError) as cm:
                  compile(src, '<fragment>', 'exec')
              self.assertEqual(cm.exception.lineno, lineno)
              self.assertEqual(cm.exception.offset, offset)
  
          check('def fact(x):\n\treturn x!\n', 2, 10)
          check('1 +\n', 1, 4)
          check('def spam():\n  print(1)\n print(2)', 3, 10)
          check('Python = "Python" +', 1, 20)
          check('Python = "\u1e54\xfd\u0163\u0125\xf2\xf1" +', 1, 20)
          check('x = "a', 1, 7)
          check('lambda x: x = 2', 1, 1)
  
          # Errors thrown by compile.c
          check('class foo:return 1', 1, 11)
          check('def f():\n  continue', 2, 3)
          check('def f():\n  break', 2, 3)
          check('try:\n  pass\nexcept:\n  pass\nexcept ValueError:\n  pass', 2, 3)
  
          # Errors thrown by tokenizer.c
          check('(0x+1)', 1, 3)
          check('x = 0xI', 1, 6)
          check('0010 + 2', 1, 4)
          check('x = 32e-+4', 1, 8)
          check('x = 0o9', 1, 6)
  
          # Errors thrown by symtable.c
          check('x = [(yield i) for i in range(3)]', 1, 5)
          check('def f():\n  from _ import *', 1, 1)
          check('def f(x, x):\n  pass', 1, 1)
          check('def f(x):\n  nonlocal x', 2, 3)
          check('def f(x):\n  x = 1\n  global x', 3, 3)
          check('nonlocal x', 1, 1)
          check('def f():\n  global x\n  nonlocal x', 2, 3)
  
          # Errors thrown by ast.c
          check('for 1 in []: pass', 1, 5)
          check('def f(*):\n  pass', 1, 7)
          check('[*x for x in xs]', 1, 2)
          check('def f():\n  x, y: int', 2, 3)
          check('(yield i) = 2', 1, 1)
          check('foo(x for x in range(10), 100)', 1, 5)
          check('foo(1=2)', 1, 5)
  
          # Errors thrown by future.c
          check('from __future__ import doesnt_exist', 1, 1)
          check('from __future__ import braces', 1, 1)
          check('x=1\nfrom __future__ import division', 2, 1)
  
  
      @cpython_only
      def testSettingException(self):
          # test that setting an exception at the C level works even if the
          # exception object can't be constructed.
  
          class BadException(Exception):
              def __init__(self_):
                  raise RuntimeError("can't instantiate BadException")
  
          class InvalidException:
              pass
  
          def test_capi1():
              import _testcapi
              try:
                  _testcapi.raise_exception(BadException, 1)
              except TypeError as err:
                  exc, err, tb = sys.exc_info()
                  co = tb.tb_frame.f_code
                  self.assertEqual(co.co_name, "test_capi1")
                  self.assertTrue(co.co_filename.endswith('test_exceptions.py'))
              else:
                  self.fail("Expected exception")
  
          def test_capi2():
              import _testcapi
              try:
                  _testcapi.raise_exception(BadException, 0)
              except RuntimeError as err:
                  exc, err, tb = sys.exc_info()
                  co = tb.tb_frame.f_code
                  self.assertEqual(co.co_name, "__init__")
                  self.assertTrue(co.co_filename.endswith('test_exceptions.py'))
                  co2 = tb.tb_frame.f_back.f_code
                  self.assertEqual(co2.co_name, "test_capi2")
              else:
                  self.fail("Expected exception")
  
          def test_capi3():
              import _testcapi
              self.assertRaises(SystemError, _testcapi.raise_exception,
                                InvalidException, 1)
  
          if not sys.platform.startswith('java'):
              test_capi1()
              test_capi2()
              test_capi3()
  
      def test_WindowsError(self):
          try:
              WindowsError
          except NameError:
              pass
          else:
              self.assertIs(WindowsError, OSError)
              self.assertEqual(str(OSError(1001)), "1001")
              self.assertEqual(str(OSError(1001, "message")),
                               "[Errno 1001] message")
              # POSIX errno (9 aka EBADF) is untranslated
              w = OSError(9, 'foo', 'bar')
              self.assertEqual(w.errno, 9)
              self.assertEqual(w.winerror, None)
              self.assertEqual(str(w), "[Errno 9] foo: 'bar'")
              # ERROR_PATH_NOT_FOUND (win error 3) becomes ENOENT (2)
              w = OSError(0, 'foo', 'bar', 3)
              self.assertEqual(w.errno, 2)
              self.assertEqual(w.winerror, 3)
              self.assertEqual(w.strerror, 'foo')
              self.assertEqual(w.filename, 'bar')
              self.assertEqual(w.filename2, None)
              self.assertEqual(str(w), "[WinError 3] foo: 'bar'")
              # Unknown win error becomes EINVAL (22)
              w = OSError(0, 'foo', None, 1001)
              self.assertEqual(w.errno, 22)
              self.assertEqual(w.winerror, 1001)
              self.assertEqual(w.strerror, 'foo')
              self.assertEqual(w.filename, None)
              self.assertEqual(w.filename2, None)
              self.assertEqual(str(w), "[WinError 1001] foo")
              # Non-numeric "errno"
              w = OSError('bar', 'foo')
              self.assertEqual(w.errno, 'bar')
              self.assertEqual(w.winerror, None)
              self.assertEqual(w.strerror, 'foo')
              self.assertEqual(w.filename, None)
              self.assertEqual(w.filename2, None)
  
      @unittest.skipUnless(sys.platform == 'win32',
                           'test specific to Windows')
      def test_windows_message(self):
          """Should fill in unknown error code in Windows error message"""
          ctypes = import_module('ctypes')
          # this error code has no message, Python formats it as hexadecimal
          code = 3765269347
          with self.assertRaisesRegex(OSError, 'Windows Error 0x%x' % code):
              ctypes.pythonapi.PyErr_SetFromWindowsErr(code)
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def testAttributes(self):
          # test that exception attributes are happy
  
          exceptionList = [
              (BaseException, (), {'args' : ()}),
              (BaseException, (1, ), {'args' : (1,)}),
              (BaseException, ('foo',),
                  {'args' : ('foo',)}),
              (BaseException, ('foo', 1),
                  {'args' : ('foo', 1)}),
              (SystemExit, ('foo',),
                  {'args' : ('foo',), 'code' : 'foo'}),
              (OSError, ('foo',),
                  {'args' : ('foo',), 'filename' : None, 'filename2' : None,
                   'errno' : None, 'strerror' : None}),
              (OSError, ('foo', 'bar'),
                  {'args' : ('foo', 'bar'),
                   'filename' : None, 'filename2' : None,
                   'errno' : 'foo', 'strerror' : 'bar'}),
              (OSError, ('foo', 'bar', 'baz'),
                  {'args' : ('foo', 'bar'),
                   'filename' : 'baz', 'filename2' : None,
                   'errno' : 'foo', 'strerror' : 'bar'}),
              (OSError, ('foo', 'bar', 'baz', None, 'quux'),
                  {'args' : ('foo', 'bar'), 'filename' : 'baz', 'filename2': 'quux'}),
              (OSError, ('errnoStr', 'strErrorStr', 'filenameStr'),
                  {'args' : ('errnoStr', 'strErrorStr'),
                   'strerror' : 'strErrorStr', 'errno' : 'errnoStr',
                   'filename' : 'filenameStr'}),
              (OSError, (1, 'strErrorStr', 'filenameStr'),
                  {'args' : (1, 'strErrorStr'), 'errno' : 1,
                   'strerror' : 'strErrorStr',
                   'filename' : 'filenameStr', 'filename2' : None}),
              (SyntaxError, (), {'msg' : None, 'text' : None,
                  'filename' : None, 'lineno' : None, 'offset' : None,
                  'print_file_and_line' : None}),
              (SyntaxError, ('msgStr',),
                  {'args' : ('msgStr',), 'text' : None,
                   'print_file_and_line' : None, 'msg' : 'msgStr',
                   'filename' : None, 'lineno' : None, 'offset' : None}),
              (SyntaxError, ('msgStr', ('filenameStr', 'linenoStr', 'offsetStr',
                             'textStr')),
                  {'offset' : 'offsetStr', 'text' : 'textStr',
                   'args' : ('msgStr', ('filenameStr', 'linenoStr',
                                        'offsetStr', 'textStr')),
                   'print_file_and_line' : None, 'msg' : 'msgStr',
                   'filename' : 'filenameStr', 'lineno' : 'linenoStr'}),
              (SyntaxError, ('msgStr', 'filenameStr', 'linenoStr', 'offsetStr',
                             'textStr', 'print_file_and_lineStr'),
                  {'text' : None,
                   'args' : ('msgStr', 'filenameStr', 'linenoStr', 'offsetStr',
                             'textStr', 'print_file_and_lineStr'),
                   'print_file_and_line' : None, 'msg' : 'msgStr',
                   'filename' : None, 'lineno' : None, 'offset' : None}),
              (UnicodeError, (), {'args' : (),}),
              (UnicodeEncodeError, ('ascii', 'a', 0, 1,
                                    'ordinal not in range'),
                  {'args' : ('ascii', 'a', 0, 1,
                                             'ordinal not in range'),
                   'encoding' : 'ascii', 'object' : 'a',
                   'start' : 0, 'reason' : 'ordinal not in range'}),
              (UnicodeDecodeError, ('ascii', bytearray(b'\xff'), 0, 1,
                                    'ordinal not in range'),
                  {'args' : ('ascii', bytearray(b'\xff'), 0, 1,
                                             'ordinal not in range'),
                   'encoding' : 'ascii', 'object' : b'\xff',
                   'start' : 0, 'reason' : 'ordinal not in range'}),
              (UnicodeDecodeError, ('ascii', b'\xff', 0, 1,
                                    'ordinal not in range'),
                  {'args' : ('ascii', b'\xff', 0, 1,
                                             'ordinal not in range'),
                   'encoding' : 'ascii', 'object' : b'\xff',
                   'start' : 0, 'reason' : 'ordinal not in range'}),
              (UnicodeTranslateError, ("\u3042", 0, 1, "ouch"),
                  {'args' : ('\u3042', 0, 1, 'ouch'),
                   'object' : '\u3042', 'reason' : 'ouch',
                   'start' : 0, 'end' : 1}),
              (NaiveException, ('foo',),
                  {'args': ('foo',), 'x': 'foo'}),
              (SlottedNaiveException, ('foo',),
                  {'args': ('foo',), 'x': 'foo'}),
          ]
          try:
              # More tests are in test_WindowsError
              exceptionList.append(
                  (WindowsError, (1, 'strErrorStr', 'filenameStr'),
                      {'args' : (1, 'strErrorStr'),
                       'strerror' : 'strErrorStr', 'winerror' : None,
                       'errno' : 1,
                       'filename' : 'filenameStr', 'filename2' : None})
              )
          except NameError:
              pass
  
          for exc, args, expected in exceptionList:
              try:
                  e = exc(*args)
              except:
                  print("\nexc=%r, args=%r" % (exc, args), file=sys.stderr)
                  raise
              else:
                  # Verify module name
                  if not type(e).__name__.endswith('NaiveException'):
                      self.assertEqual(type(e).__module__, 'builtins')
                  # Verify no ref leaks in Exc_str()
                  s = str(e)
                  for checkArgName in expected:
                      value = getattr(e, checkArgName)
                      self.assertEqual(repr(value),
                                       repr(expected[checkArgName]),
                                       '%r.%s == %r, expected %r' % (
                                       e, checkArgName,
                                       value, expected[checkArgName]))
  
                  # test for pickling support
                  for p in [pickle]:
                      for protocol in range(p.HIGHEST_PROTOCOL + 1):
                          s = p.dumps(e, protocol)
                          new = p.loads(s)
                          for checkArgName in expected:
                              got = repr(getattr(new, checkArgName))
                              want = repr(expected[checkArgName])
                              self.assertEqual(got, want,
                                               'pickled "%r", attribute "%s' %
                                               (e, checkArgName))
  
      def testWithTraceback(self):
          try:
              raise IndexError(4)
          except:
              tb = sys.exc_info()[2]
  
          e = BaseException().with_traceback(tb)
          self.assertIsInstance(e, BaseException)
          self.assertEqual(e.__traceback__, tb)
  
          e = IndexError(5).with_traceback(tb)
          self.assertIsInstance(e, IndexError)
          self.assertEqual(e.__traceback__, tb)
  
          class MyException(Exception):
              pass
  
          e = MyException().with_traceback(tb)
          self.assertIsInstance(e, MyException)
          self.assertEqual(e.__traceback__, tb)
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def testInvalidTraceback(self):
          try:
              Exception().__traceback__ = 5
          except TypeError as e:
              self.assertIn("__traceback__ must be a traceback", str(e))
          else:
              self.fail("No exception raised")
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def testInvalidAttrs(self):
          self.assertRaises(TypeError, setattr, Exception(), '__cause__', 1)
          self.assertRaises(TypeError, delattr, Exception(), '__cause__')
          self.assertRaises(TypeError, setattr, Exception(), '__context__', 1)
          self.assertRaises(TypeError, delattr, Exception(), '__context__')
  
      def testNoneClearsTracebackAttr(self):
          try:
              raise IndexError(4)
          except:
              tb = sys.exc_info()[2]
  
          e = Exception()
          e.__traceback__ = tb
          e.__traceback__ = None
          self.assertEqual(e.__traceback__, None)
  
      def testChainingAttrs(self):
          e = Exception()
          self.assertIsNone(e.__context__)
          self.assertIsNone(e.__cause__)
  
          e = TypeError()
          self.assertIsNone(e.__context__)
          self.assertIsNone(e.__cause__)
  
          class MyException(OSError):
              pass
  
          e = MyException()
          self.assertIsNone(e.__context__)
          self.assertIsNone(e.__cause__)
  
      def testChainingDescriptors(self):
          try:
              raise Exception()
          except Exception as exc:
              e = exc
  
          self.assertIsNone(e.__context__)
          self.assertIsNone(e.__cause__)
          self.assertFalse(e.__suppress_context__)
  
          e.__context__ = NameError()
          e.__cause__ = None
          self.assertIsInstance(e.__context__, NameError)
          self.assertIsNone(e.__cause__)
          self.assertTrue(e.__suppress_context__)
          e.__suppress_context__ = False
          self.assertFalse(e.__suppress_context__)
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def testKeywordArgs(self):
          # test that builtin exception don't take keyword args,
          # but user-defined subclasses can if they want
          self.assertRaises(TypeError, BaseException, a=1)
  
          class DerivedException(BaseException):
              def __init__(self, fancy_arg):
                  BaseException.__init__(self)
                  self.fancy_arg = fancy_arg
  
          x = DerivedException(fancy_arg=42)
          self.assertEqual(x.fancy_arg, 42)
  
      @no_tracing
      @unittest.skipIf(sys.platform == 'win32', 'TODO: RUSTPYTHON Windows')
      def testInfiniteRecursion(self):
          def f():
              return f()
          self.assertRaises(RecursionError, f)
  
          def g():
              try:
                  return g()
              except ValueError:
                  return -1
          self.assertRaises(RecursionError, g)
  
      def test_str(self):
          # Make sure both instances and classes have a str representation.
          self.assertTrue(str(Exception))
          self.assertTrue(str(Exception('a')))
          self.assertTrue(str(Exception('a', 'b')))
  
      def testExceptionCleanupNames(self):
          # Make sure the local variable bound to the exception instance by
          # an "except" statement is only visible inside the except block.
          try:
              raise Exception()
          except Exception as e:
              self.assertTrue(e)
              del e
          self.assertNotIn('e', locals())
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def testExceptionCleanupState(self):
          # Make sure exception state is cleaned up as soon as the except
          # block is left. See #2507
  
          class MyException(Exception):
              def __init__(self, obj):
                  self.obj = obj
          class MyObj:
              pass
  
          def inner_raising_func():
              # Create some references in exception value and traceback
              local_ref = obj
              raise MyException(obj)
  
          # Qualified "except" with "as"
          obj = MyObj()
          wr = weakref.ref(obj)
          try:
              inner_raising_func()
          except MyException as e:
              pass
          obj = None
          obj = wr()
          self.assertIsNone(obj)
  
          # Qualified "except" without "as"
          obj = MyObj()
          wr = weakref.ref(obj)
          try:
              inner_raising_func()
          except MyException:
              pass
          obj = None
          obj = wr()
          self.assertIsNone(obj)
  
          # Bare "except"
          obj = MyObj()
          wr = weakref.ref(obj)
          try:
              inner_raising_func()
          except:
              pass
          obj = None
          obj = wr()
          self.assertIsNone(obj)
  
          # "except" with premature block leave
          obj = MyObj()
          wr = weakref.ref(obj)
          for i in [0]:
              try:
                  inner_raising_func()
              except:
                  break
          obj = None
          obj = wr()
          self.assertIsNone(obj)
  
          # "except" block raising another exception
          obj = MyObj()
          wr = weakref.ref(obj)
          try:
              try:
                  inner_raising_func()
              except:
                  raise KeyError
          except KeyError as e:
              # We want to test that the except block above got rid of
              # the exception raised in inner_raising_func(), but it
              # also ends up in the __context__ of the KeyError, so we
              # must clear the latter manually for our test to succeed.
              e.__context__ = None
              obj = None
              obj = wr()
              # guarantee no ref cycles on CPython (don't gc_collect)
              if check_impl_detail(cpython=False):
                  gc_collect()
              self.assertIsNone(obj)
  
          # Some complicated construct
          obj = MyObj()
          wr = weakref.ref(obj)
          try:
              inner_raising_func()
          except MyException:
              try:
                  try:
                      raise
                  finally:
                      raise
              except MyException:
                  pass
          obj = None
          if check_impl_detail(cpython=False):
              gc_collect()
          obj = wr()
          self.assertIsNone(obj)
  
          # Inside an exception-silencing "with" block
          class Context:
              def __enter__(self):
                  return self
              def __exit__ (self, exc_type, exc_value, exc_tb):
                  return True
          obj = MyObj()
          wr = weakref.ref(obj)
          with Context():
              inner_raising_func()
          obj = None
          if check_impl_detail(cpython=False):
              gc_collect()
          obj = wr()
          self.assertIsNone(obj)
  
      def test_exception_target_in_nested_scope(self):
          # issue 4617: This used to raise a SyntaxError
          # "can not delete variable 'e' referenced in nested scope"
          def print_error():
              e
          try:
              something
          except Exception as e:
              print_error()
              # implicit "del e" here
  
      def test_generator_leaking(self):
          # Test that generator exception state doesn't leak into the calling
          # frame
          def yield_raise():
              try:
                  raise KeyError("caught")
              except KeyError:
                  yield sys.exc_info()[0]
                  yield sys.exc_info()[0]
              yield sys.exc_info()[0]
          g = yield_raise()
          self.assertEqual(next(g), KeyError)
          self.assertEqual(sys.exc_info()[0], None)
          self.assertEqual(next(g), KeyError)
          self.assertEqual(sys.exc_info()[0], None)
          self.assertEqual(next(g), None)
  
          # Same test, but inside an exception handler
          try:
              raise TypeError("foo")
          except TypeError:
              g = yield_raise()
              self.assertEqual(next(g), KeyError)
              self.assertEqual(sys.exc_info()[0], TypeError)
              self.assertEqual(next(g), KeyError)
              self.assertEqual(sys.exc_info()[0], TypeError)
              self.assertEqual(next(g), TypeError)
              del g
              self.assertEqual(sys.exc_info()[0], TypeError)
  
      def test_generator_leaking2(self):
          # See issue 12475.
          def g():
              yield
          try:
              raise RuntimeError
          except RuntimeError:
              it = g()
              next(it)
          try:
              next(it)
          except StopIteration:
              pass
          self.assertEqual(sys.exc_info(), (None, None, None))
  
      def test_generator_leaking3(self):
          # See issue #23353.  When gen.throw() is called, the caller's
          # exception state should be save and restored.
          def g():
              try:
                  yield
              except ZeroDivisionError:
                  yield sys.exc_info()[1]
          it = g()
          next(it)
          try:
              1/0
          except ZeroDivisionError as e:
              self.assertIs(sys.exc_info()[1], e)
              gen_exc = it.throw(e)
              self.assertIs(sys.exc_info()[1], e)
              self.assertIs(gen_exc, e)
          self.assertEqual(sys.exc_info(), (None, None, None))
  
      def test_generator_leaking4(self):
          # See issue #23353.  When an exception is raised by a generator,
          # the caller's exception state should still be restored.
          def g():
              try:
                  1/0
              except ZeroDivisionError:
                  yield sys.exc_info()[0]
                  raise
          it = g()
          try:
              raise TypeError
          except TypeError:
              # The caller's exception state (TypeError) is temporarily
              # saved in the generator.
              tp = next(it)
          self.assertIs(tp, ZeroDivisionError)
          try:
              next(it)
              # We can't check it immediately, but while next() returns
              # with an exception, it shouldn't have restored the old
              # exception state (TypeError).
          except ZeroDivisionError as e:
              self.assertIs(sys.exc_info()[1], e)
          # We used to find TypeError here.
          self.assertEqual(sys.exc_info(), (None, None, None))
  
      def test_generator_doesnt_retain_old_exc(self):
          def g():
              self.assertIsInstance(sys.exc_info()[1], RuntimeError)
              yield
              self.assertEqual(sys.exc_info(), (None, None, None))
          it = g()
          try:
              raise RuntimeError
          except RuntimeError:
              next(it)
          self.assertRaises(StopIteration, next, it)
  
      def test_generator_finalizing_and_exc_info(self):
          # See #7173
          def simple_gen():
              yield 1
          def run_gen():
              gen = simple_gen()
              try:
                  raise RuntimeError
              except RuntimeError:
                  return next(gen)
          run_gen()
          gc_collect()
          self.assertEqual(sys.exc_info(), (None, None, None))
  
      def _check_generator_cleanup_exc_state(self, testfunc):
          # Issue #12791: exception state is cleaned up as soon as a generator
          # is closed (reference cycles are broken).
          class MyException(Exception):
              def __init__(self, obj):
                  self.obj = obj
          class MyObj:
              pass
  
          def raising_gen():
              try:
                  raise MyException(obj)
              except MyException:
                  yield
  
          obj = MyObj()
          wr = weakref.ref(obj)
          g = raising_gen()
          next(g)
          testfunc(g)
          g = obj = None
          obj = wr()
          self.assertIsNone(obj)
  
      def test_generator_throw_cleanup_exc_state(self):
          def do_throw(g):
              try:
                  g.throw(RuntimeError())
              except RuntimeError:
                  pass
          self._check_generator_cleanup_exc_state(do_throw)
  
      def test_generator_close_cleanup_exc_state(self):
          def do_close(g):
              g.close()
          self._check_generator_cleanup_exc_state(do_close)
  
      def test_generator_del_cleanup_exc_state(self):
          def do_del(g):
              g = None
          self._check_generator_cleanup_exc_state(do_del)
  
      def test_generator_next_cleanup_exc_state(self):
          def do_next(g):
              try:
                  next(g)
              except StopIteration:
                  pass
              else:
                  self.fail("should have raised StopIteration")
          self._check_generator_cleanup_exc_state(do_next)
  
      def test_generator_send_cleanup_exc_state(self):
          def do_send(g):
              try:
                  g.send(None)
              except StopIteration:
                  pass
              else:
                  self.fail("should have raised StopIteration")
          self._check_generator_cleanup_exc_state(do_send)
  
      # def test_3114(self):
      #     # Bug #3114: in its destructor, MyObject retrieves a pointer to
      #     # obsolete and/or deallocated objects.
      #     class MyObject:
      #         def __del__(self):
      #             nonlocal e
      #             e = sys.exc_info()
      #     e = ()
      #     try:
      #         raise Exception(MyObject())
      #     except:
      #         pass
      #     self.assertEqual(e, (None, None, None))
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_unicode_change_attributes(self):
          # See issue 7309. This was a crasher.
  
          u = UnicodeEncodeError('baz', 'xxxxx', 1, 5, 'foo')
          self.assertEqual(str(u), "'baz' codec can't encode characters in position 1-4: foo")
          u.end = 2
          self.assertEqual(str(u), "'baz' codec can't encode character '\\x78' in position 1: foo")
          u.end = 5
          u.reason = 0x345345345345345345
          self.assertEqual(str(u), "'baz' codec can't encode characters in position 1-4: 965230951443685724997")
          u.encoding = 4000
          self.assertEqual(str(u), "'4000' codec can't encode characters in position 1-4: 965230951443685724997")
          u.start = 1000
          self.assertEqual(str(u), "'4000' codec can't encode characters in position 1000-4: 965230951443685724997")
  
          u = UnicodeDecodeError('baz', b'xxxxx', 1, 5, 'foo')
          self.assertEqual(str(u), "'baz' codec can't decode bytes in position 1-4: foo")
          u.end = 2
          self.assertEqual(str(u), "'baz' codec can't decode byte 0x78 in position 1: foo")
          u.end = 5
          u.reason = 0x345345345345345345
          self.assertEqual(str(u), "'baz' codec can't decode bytes in position 1-4: 965230951443685724997")
          u.encoding = 4000
          self.assertEqual(str(u), "'4000' codec can't decode bytes in position 1-4: 965230951443685724997")
          u.start = 1000
          self.assertEqual(str(u), "'4000' codec can't decode bytes in position 1000-4: 965230951443685724997")
  
          u = UnicodeTranslateError('xxxx', 1, 5, 'foo')
          self.assertEqual(str(u), "can't translate characters in position 1-4: foo")
          u.end = 2
          self.assertEqual(str(u), "can't translate character '\\x78' in position 1: foo")
          u.end = 5
          u.reason = 0x345345345345345345
          self.assertEqual(str(u), "can't translate characters in position 1-4: 965230951443685724997")
          u.start = 1000
          self.assertEqual(str(u), "can't translate characters in position 1000-4: 965230951443685724997")
  
      def test_unicode_errors_no_object(self):
          # See issue #21134.
          klasses = UnicodeEncodeError, UnicodeDecodeError, UnicodeTranslateError
          for klass in klasses:
              self.assertEqual(str(klass.__new__(klass)), "")
  
      @no_tracing
      @unittest.skipIf(sys.platform == 'win32', 'TODO: RUSTPYTHON Windows')
      def test_badisinstance(self):
          # Bug #2542: if issubclass(e, MyException) raises an exception,
          # it should be ignored
          class Meta(type):
              def __subclasscheck__(cls, subclass):
                  raise ValueError()
          class MyException(Exception, metaclass=Meta):
              pass
  
          with captured_stderr() as stderr:
              try:
                  raise KeyError()
              except MyException as e:
                  self.fail("exception should not be a MyException")
              except KeyError:
                  pass
              except:
                  self.fail("Should have raised KeyError")
              else:
                  self.fail("Should have raised KeyError")
  
          def g():
              try:
                  return g()
              except RecursionError:
                  return sys.exc_info()
          e, v, tb = g()
          self.assertIsInstance(v, RecursionError, type(v))
          self.assertIn("maximum recursion depth exceeded", str(v))
  
      @cpython_only
      def test_recursion_normalizing_exception(self):
          # Issue #22898.
          # Test that a RecursionError is raised when tstate->recursion_depth is
          # equal to recursion_limit in PyErr_NormalizeException() and check
          # that a ResourceWarning is printed.
          # Prior to #22898, the recursivity of PyErr_NormalizeException() was
          # controlled by tstate->recursion_depth and a PyExc_RecursionErrorInst
          # singleton was being used in that case, that held traceback data and
          # locals indefinitely and would cause a segfault in _PyExc_Fini() upon
          # finalization of these locals.
          code = """if 1:
              import sys
              from _testcapi import get_recursion_depth
  
              class MyException(Exception): pass
  
              def setrecursionlimit(depth):
                  while 1:
                      try:
                          sys.setrecursionlimit(depth)
                          return depth
                      except RecursionError:
                          # sys.setrecursionlimit() raises a RecursionError if
                          # the new recursion limit is too low (issue #25274).
                          depth += 1
  
              def recurse(cnt):
                  cnt -= 1
                  if cnt:
                      recurse(cnt)
                  else:
                      generator.throw(MyException)
  
              def gen():
                  f = open(%a, mode='rb', buffering=0)
                  yield
  
              generator = gen()
              next(generator)
              recursionlimit = sys.getrecursionlimit()
              depth = get_recursion_depth()
              try:
                  # Upon the last recursive invocation of recurse(),
                  # tstate->recursion_depth is equal to (recursion_limit - 1)
                  # and is equal to recursion_limit when _gen_throw() calls
                  # PyErr_NormalizeException().
                  recurse(setrecursionlimit(depth + 2) - depth - 1)
              finally:
                  sys.setrecursionlimit(recursionlimit)
                  print('Done.')
          """ % __file__
          rc, out, err = script_helper.assert_python_failure("-Wd", "-c", code)
          # Check that the program does not fail with SIGABRT.
          self.assertEqual(rc, 1)
          self.assertIn(b'RecursionError', err)
          self.assertIn(b'ResourceWarning', err)
          self.assertIn(b'Done.', out)
  
      @cpython_only
      def test_recursion_normalizing_infinite_exception(self):
          # Issue #30697. Test that a RecursionError is raised when
          # PyErr_NormalizeException() maximum recursion depth has been
          # exceeded.
          code = """if 1:
              import _testcapi
              try:
                  raise _testcapi.RecursingInfinitelyError
              finally:
                  print('Done.')
          """
          rc, out, err = script_helper.assert_python_failure("-c", code)
          self.assertEqual(rc, 1)
          self.assertIn(b'RecursionError: maximum recursion depth exceeded '
                        b'while normalizing an exception', err)
          self.assertIn(b'Done.', out)
  
      @cpython_only
      def test_recursion_normalizing_with_no_memory(self):
          # Issue #30697. Test that in the abort that occurs when there is no
          # memory left and the size of the Python frames stack is greater than
          # the size of the list of preallocated MemoryError instances, the
          # Fatal Python error message mentions MemoryError.
          code = """if 1:
              import _testcapi
              class C(): pass
              def recurse(cnt):
                  cnt -= 1
                  if cnt:
                      recurse(cnt)
                  else:
                      _testcapi.set_nomemory(0)
                      C()
              recurse(16)
          """
          with SuppressCrashReport():
              rc, out, err = script_helper.assert_python_failure("-c", code)
              self.assertIn(b'Fatal Python error: Cannot recover from '
                            b'MemoryErrors while normalizing exceptions.', err)
  
      @cpython_only
      def test_MemoryError(self):
          # PyErr_NoMemory always raises the same exception instance.
          # Check that the traceback is not doubled.
          import traceback
          from _testcapi import raise_memoryerror
          def raiseMemError():
              try:
                  raise_memoryerror()
              except MemoryError as e:
                  tb = e.__traceback__
              else:
                  self.fail("Should have raises a MemoryError")
              return traceback.format_tb(tb)
  
          tb1 = raiseMemError()
          tb2 = raiseMemError()
          self.assertEqual(tb1, tb2)
  
      @cpython_only
      def test_exception_with_doc(self):
          import _testcapi
          doc2 = "This is a test docstring."
          doc4 = "This is another test docstring."
  
          self.assertRaises(SystemError, _testcapi.make_exception_with_doc,
                            "error1")
  
          # test basic usage of PyErr_NewException
          error1 = _testcapi.make_exception_with_doc("_testcapi.error1")
          self.assertIs(type(error1), type)
          self.assertTrue(issubclass(error1, Exception))
          self.assertIsNone(error1.__doc__)
  
          # test with given docstring
          error2 = _testcapi.make_exception_with_doc("_testcapi.error2", doc2)
          self.assertEqual(error2.__doc__, doc2)
  
          # test with explicit base (without docstring)
          error3 = _testcapi.make_exception_with_doc("_testcapi.error3",
                                                     base=error2)
          self.assertTrue(issubclass(error3, error2))
  
          # test with explicit base tuple
          class C(object):
              pass
          error4 = _testcapi.make_exception_with_doc("_testcapi.error4", doc4,
                                                     (error3, C))
          self.assertTrue(issubclass(error4, error3))
          self.assertTrue(issubclass(error4, C))
          self.assertEqual(error4.__doc__, doc4)
  
          # test with explicit dictionary
          error5 = _testcapi.make_exception_with_doc("_testcapi.error5", "",
                                                     error4, {'a': 1})
          self.assertTrue(issubclass(error5, error4))
          self.assertEqual(error5.a, 1)
          self.assertEqual(error5.__doc__, "")
  
      @cpython_only
      def test_memory_error_cleanup(self):
          # Issue #5437: preallocated MemoryError instances should not keep
          # traceback objects alive.
          from _testcapi import raise_memoryerror
          class C:
              pass
          wr = None
          def inner():
              nonlocal wr
              c = C()
              wr = weakref.ref(c)
              raise_memoryerror()
          # We cannot use assertRaises since it manually deletes the traceback
          try:
              inner()
          except MemoryError as e:
              self.assertNotEqual(wr(), None)
          else:
              self.fail("MemoryError not raised")
          self.assertEqual(wr(), None)
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      @no_tracing
      @unittest.skipIf(sys.platform == 'win32', 'TODO: RUSTPYTHON Windows')
      def test_recursion_error_cleanup(self):
          # Same test as above, but with "recursion exceeded" errors
          class C:
              pass
          wr = None
          def inner():
              nonlocal wr
              c = C()
              wr = weakref.ref(c)
              inner()
          # We cannot use assertRaises since it manually deletes the traceback
          try:
              inner()
          except RecursionError as e:
              self.assertNotEqual(wr(), None)
          else:
              self.fail("RecursionError not raised")
          self.assertEqual(wr(), None)
      
      @unittest.skipIf(sys.platform == 'win32', 'error specific to cpython')
      def test_errno_ENOTDIR(self):
          # Issue #12802: "not a directory" errors are ENOTDIR even on Windows
          with self.assertRaises(OSError) as cm:
              os.listdir(__file__)
          self.assertEqual(cm.exception.errno, errno.ENOTDIR, cm.exception)
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_unraisable(self):
          # Issue #22836: PyErr_WriteUnraisable() should give sensible reports
          class BrokenDel:
              def __del__(self):
                  exc = ValueError("del is broken")
                  # The following line is included in the traceback report:
                  raise exc
  
          class BrokenExceptionDel:
              def __del__(self):
                  exc = BrokenStrException()
                  # The following line is included in the traceback report:
                  raise exc
  
          for test_class in (BrokenDel, BrokenExceptionDel):
              with self.subTest(test_class):
                  obj = test_class()
                  with captured_stderr() as stderr:
                      del obj
                  report = stderr.getvalue()
                  self.assertIn("Exception ignored", report)
                  self.assertIn(test_class.__del__.__qualname__, report)
                  self.assertIn("test_exceptions.py", report)
                  self.assertIn("raise exc", report)
                  if test_class is BrokenExceptionDel:
                      self.assertIn("BrokenStrException", report)
                      self.assertIn("<exception str() failed>", report)
                  else:
                      self.assertIn("ValueError", report)
                      self.assertIn("del is broken", report)
                  self.assertTrue(report.endswith("\n"))
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_unhandled(self):
          # Check for sensible reporting of unhandled exceptions
          for exc_type in (ValueError, BrokenStrException):
              with self.subTest(exc_type):
                  try:
                      exc = exc_type("test message")
                      # The following line is included in the traceback report:
                      raise exc
                  except exc_type:
                      with captured_stderr() as stderr:
                          sys.__excepthook__(*sys.exc_info())
                  report = stderr.getvalue()
                  self.assertIn("test_exceptions.py", report)
                  self.assertIn("raise exc", report)
                  self.assertIn(exc_type.__name__, report)
                  if exc_type is BrokenStrException:
                      self.assertIn("<exception str() failed>", report)
                  else:
                      self.assertIn("test message", report)
                  self.assertTrue(report.endswith("\n"))
  
      @cpython_only
      def test_memory_error_in_PyErr_PrintEx(self):
          code = """if 1:
              import _testcapi
              class C(): pass
              _testcapi.set_nomemory(0, %d)
              C()
          """
  
          # Issue #30817: Abort in PyErr_PrintEx() when no memory.
          # Span a large range of tests as the CPython code always evolves with
          # changes that add or remove memory allocations.
          for i in range(1, 20):
              rc, out, err = script_helper.assert_python_failure("-c", code % i)
              self.assertIn(rc, (1, 120))
              self.assertIn(b'MemoryError', err)
  
      def test_yield_in_nested_try_excepts(self):
          #Issue #25612
          class MainError(Exception):
              pass
  
          class SubError(Exception):
              pass
  
          def main():
              try:
                  raise MainError()
              except MainError:
                  try:
                      yield
                  except SubError:
                      pass
                  raise
  
          coro = main()
          coro.send(None)
          with self.assertRaises(MainError):
              coro.throw(SubError())
  
      def test_generator_doesnt_retain_old_exc2(self):
          #Issue 28884#msg282532
          def g():
              try:
                  raise ValueError
              except ValueError:
                  yield 1
              self.assertEqual(sys.exc_info(), (None, None, None))
              yield 2
  
          gen = g()
  
          try:
              raise IndexError
          except IndexError:
              self.assertEqual(next(gen), 1)
          self.assertEqual(next(gen), 2)
  
      def test_raise_in_generator(self):
          #Issue 25612#msg304117
          def g():
              yield 1
              raise
              yield 2
  
          with self.assertRaises(ZeroDivisionError):
              i = g()
              try:
                  1/0
              except:
                  next(i)
                  next(i)
  
  global_for_suggestions = None
  
  class NameErrorTests(unittest.TestCase):
      def test_name_error_has_name(self):
          try:
              bluch
          except NameError as exc:
              self.assertEqual("bluch", exc.name)
  
      def test_name_error_suggestions(self):
          def Substitution():
              noise = more_noise = a = bc = None
              blech = None
              print(bluch)
  
          def Elimination():
              noise = more_noise = a = bc = None
              blch = None
              print(bluch)
  
          def Addition():
              noise = more_noise = a = bc = None
              bluchin = None
              print(bluch)
  
          def SubstitutionOverElimination():
              blach = None
              bluc = None
              print(bluch)
  
          def SubstitutionOverAddition():
              blach = None
              bluchi = None
              print(bluch)
  
          def EliminationOverAddition():
              blucha = None
              bluc = None
              print(bluch)
  
          for func, suggestion in [(Substitution, "'blech'?"),
                                  (Elimination, "'blch'?"),
                                  (Addition, "'bluchin'?"),
                                  (EliminationOverAddition, "'blucha'?"),
                                  (SubstitutionOverElimination, "'blach'?"),
                                  (SubstitutionOverAddition, "'blach'?")]:
              err = None
              try:
                  func()
              except NameError as exc:
                  with support.captured_stderr() as err:
                      sys.__excepthook__(*sys.exc_info())
              self.assertIn(suggestion, err.getvalue())
  
      def test_name_error_suggestions_from_globals(self):
          def func():
              print(global_for_suggestio)
          try:
              func()
          except NameError as exc:
              with support.captured_stderr() as err:
                  sys.__excepthook__(*sys.exc_info())
          self.assertIn("'global_for_suggestions'?", err.getvalue())
  
      def test_name_error_suggestions_from_builtins(self):
          def func():
              print(ZeroDivisionErrrrr)
          try:
              func()
          except NameError as exc:
              with support.captured_stderr() as err:
                  sys.__excepthook__(*sys.exc_info())
          self.assertIn("'ZeroDivisionError'?", err.getvalue())
  
      def test_name_error_suggestions_do_not_trigger_for_long_names(self):
          def f():
              somethingverywronghehehehehehe = None
              print(somethingverywronghe)
  
          try:
              f()
          except NameError as exc:
              with support.captured_stderr() as err:
                  sys.__excepthook__(*sys.exc_info())
  
          self.assertNotIn("somethingverywronghehe", err.getvalue())
  
      def test_name_error_bad_suggestions_do_not_trigger_for_small_names(self):
          vvv = mom = w = id = pytho = None
  
          with self.subTest(name="b"):
              try:
                  b
              except NameError as exc:
                  with support.captured_stderr() as err:
                      sys.__excepthook__(*sys.exc_info())
              self.assertNotIn("you mean", err.getvalue())
              self.assertNotIn("vvv", err.getvalue())
              self.assertNotIn("mom", err.getvalue())
              self.assertNotIn("'id'", err.getvalue())
              self.assertNotIn("'w'", err.getvalue())
              self.assertNotIn("'pytho'", err.getvalue())
  
          with self.subTest(name="v"):
              try:
                  v
              except NameError as exc:
                  with support.captured_stderr() as err:
                      sys.__excepthook__(*sys.exc_info())
              self.assertNotIn("you mean", err.getvalue())
              self.assertNotIn("vvv", err.getvalue())
              self.assertNotIn("mom", err.getvalue())
              self.assertNotIn("'id'", err.getvalue())
              self.assertNotIn("'w'", err.getvalue())
              self.assertNotIn("'pytho'", err.getvalue())
  
          with self.subTest(name="m"):
              try:
                  m
              except NameError as exc:
                  with support.captured_stderr() as err:
                      sys.__excepthook__(*sys.exc_info())
              self.assertNotIn("you mean", err.getvalue())
              self.assertNotIn("vvv", err.getvalue())
              self.assertNotIn("mom", err.getvalue())
              self.assertNotIn("'id'", err.getvalue())
              self.assertNotIn("'w'", err.getvalue())
              self.assertNotIn("'pytho'", err.getvalue())
  
          with self.subTest(name="py"):
              try:
                  py
              except NameError as exc:
                  with support.captured_stderr() as err:
                      sys.__excepthook__(*sys.exc_info())
              self.assertNotIn("you mean", err.getvalue())
              self.assertNotIn("vvv", err.getvalue())
              self.assertNotIn("mom", err.getvalue())
              self.assertNotIn("'id'", err.getvalue())
              self.assertNotIn("'w'", err.getvalue())
              self.assertNotIn("'pytho'", err.getvalue())
  
      def test_name_error_suggestions_do_not_trigger_for_too_many_locals(self):
          def f():
              # Mutating locals() is unreliable, so we need to do it by hand
              a1 = a2 = a3 = a4 = a5 = a6 = a7 = a8 = a9 = a10 = \
              a11 = a12 = a13 = a14 = a15 = a16 = a17 = a18 = a19 = a20 = \
              a21 = a22 = a23 = a24 = a25 = a26 = a27 = a28 = a29 = a30 = \
              a31 = a32 = a33 = a34 = a35 = a36 = a37 = a38 = a39 = a40 = \
              a41 = a42 = a43 = a44 = a45 = a46 = a47 = a48 = a49 = a50 = \
              a51 = a52 = a53 = a54 = a55 = a56 = a57 = a58 = a59 = a60 = \
              a61 = a62 = a63 = a64 = a65 = a66 = a67 = a68 = a69 = a70 = \
              a71 = a72 = a73 = a74 = a75 = a76 = a77 = a78 = a79 = a80 = \
              a81 = a82 = a83 = a84 = a85 = a86 = a87 = a88 = a89 = a90 = \
              a91 = a92 = a93 = a94 = a95 = a96 = a97 = a98 = a99 = a100 = \
              a101 = a102 = a103 = a104 = a105 = a106 = a107 = a108 = a109 = a110 = \
              a111 = a112 = a113 = a114 = a115 = a116 = a117 = a118 = a119 = a120 = \
              a121 = a122 = a123 = a124 = a125 = a126 = a127 = a128 = a129 = a130 = \
              a131 = a132 = a133 = a134 = a135 = a136 = a137 = a138 = a139 = a140 = \
              a141 = a142 = a143 = a144 = a145 = a146 = a147 = a148 = a149 = a150 = \
              a151 = a152 = a153 = a154 = a155 = a156 = a157 = a158 = a159 = a160 = \
              a161 = a162 = a163 = a164 = a165 = a166 = a167 = a168 = a169 = a170 = \
              a171 = a172 = a173 = a174 = a175 = a176 = a177 = a178 = a179 = a180 = \
              a181 = a182 = a183 = a184 = a185 = a186 = a187 = a188 = a189 = a190 = \
              a191 = a192 = a193 = a194 = a195 = a196 = a197 = a198 = a199 = a200 = \
              a201 = a202 = a203 = a204 = a205 = a206 = a207 = a208 = a209 = a210 = \
              a211 = a212 = a213 = a214 = a215 = a216 = a217 = a218 = a219 = a220 = \
              a221 = a222 = a223 = a224 = a225 = a226 = a227 = a228 = a229 = a230 = \
              a231 = a232 = a233 = a234 = a235 = a236 = a237 = a238 = a239 = a240 = \
              a241 = a242 = a243 = a244 = a245 = a246 = a247 = a248 = a249 = a250 = \
              a251 = a252 = a253 = a254 = a255 = a256 = a257 = a258 = a259 = a260 = \
              a261 = a262 = a263 = a264 = a265 = a266 = a267 = a268 = a269 = a270 = \
              a271 = a272 = a273 = a274 = a275 = a276 = a277 = a278 = a279 = a280 = \
              a281 = a282 = a283 = a284 = a285 = a286 = a287 = a288 = a289 = a290 = \
              a291 = a292 = a293 = a294 = a295 = a296 = a297 = a298 = a299 = a300 = \
              a301 = a302 = a303 = a304 = a305 = a306 = a307 = a308 = a309 = a310 = \
              a311 = a312 = a313 = a314 = a315 = a316 = a317 = a318 = a319 = a320 = \
              a321 = a322 = a323 = a324 = a325 = a326 = a327 = a328 = a329 = a330 = \
              a331 = a332 = a333 = a334 = a335 = a336 = a337 = a338 = a339 = a340 = \
              a341 = a342 = a343 = a344 = a345 = a346 = a347 = a348 = a349 = a350 = \
              a351 = a352 = a353 = a354 = a355 = a356 = a357 = a358 = a359 = a360 = \
              a361 = a362 = a363 = a364 = a365 = a366 = a367 = a368 = a369 = a370 = \
              a371 = a372 = a373 = a374 = a375 = a376 = a377 = a378 = a379 = a380 = \
              a381 = a382 = a383 = a384 = a385 = a386 = a387 = a388 = a389 = a390 = \
              a391 = a392 = a393 = a394 = a395 = a396 = a397 = a398 = a399 = a400 = \
              a401 = a402 = a403 = a404 = a405 = a406 = a407 = a408 = a409 = a410 = \
              a411 = a412 = a413 = a414 = a415 = a416 = a417 = a418 = a419 = a420 = \
              a421 = a422 = a423 = a424 = a425 = a426 = a427 = a428 = a429 = a430 = \
              a431 = a432 = a433 = a434 = a435 = a436 = a437 = a438 = a439 = a440 = \
              a441 = a442 = a443 = a444 = a445 = a446 = a447 = a448 = a449 = a450 = \
              a451 = a452 = a453 = a454 = a455 = a456 = a457 = a458 = a459 = a460 = \
              a461 = a462 = a463 = a464 = a465 = a466 = a467 = a468 = a469 = a470 = \
              a471 = a472 = a473 = a474 = a475 = a476 = a477 = a478 = a479 = a480 = \
              a481 = a482 = a483 = a484 = a485 = a486 = a487 = a488 = a489 = a490 = \
              a491 = a492 = a493 = a494 = a495 = a496 = a497 = a498 = a499 = a500 = \
              a501 = a502 = a503 = a504 = a505 = a506 = a507 = a508 = a509 = a510 = \
              a511 = a512 = a513 = a514 = a515 = a516 = a517 = a518 = a519 = a520 = \
              a521 = a522 = a523 = a524 = a525 = a526 = a527 = a528 = a529 = a530 = \
              a531 = a532 = a533 = a534 = a535 = a536 = a537 = a538 = a539 = a540 = \
              a541 = a542 = a543 = a544 = a545 = a546 = a547 = a548 = a549 = a550 = \
              a551 = a552 = a553 = a554 = a555 = a556 = a557 = a558 = a559 = a560 = \
              a561 = a562 = a563 = a564 = a565 = a566 = a567 = a568 = a569 = a570 = \
              a571 = a572 = a573 = a574 = a575 = a576 = a577 = a578 = a579 = a580 = \
              a581 = a582 = a583 = a584 = a585 = a586 = a587 = a588 = a589 = a590 = \
              a591 = a592 = a593 = a594 = a595 = a596 = a597 = a598 = a599 = a600 = \
              a601 = a602 = a603 = a604 = a605 = a606 = a607 = a608 = a609 = a610 = \
              a611 = a612 = a613 = a614 = a615 = a616 = a617 = a618 = a619 = a620 = \
              a621 = a622 = a623 = a624 = a625 = a626 = a627 = a628 = a629 = a630 = \
              a631 = a632 = a633 = a634 = a635 = a636 = a637 = a638 = a639 = a640 = \
              a641 = a642 = a643 = a644 = a645 = a646 = a647 = a648 = a649 = a650 = \
              a651 = a652 = a653 = a654 = a655 = a656 = a657 = a658 = a659 = a660 = \
              a661 = a662 = a663 = a664 = a665 = a666 = a667 = a668 = a669 = a670 = \
              a671 = a672 = a673 = a674 = a675 = a676 = a677 = a678 = a679 = a680 = \
              a681 = a682 = a683 = a684 = a685 = a686 = a687 = a688 = a689 = a690 = \
              a691 = a692 = a693 = a694 = a695 = a696 = a697 = a698 = a699 = a700 = \
              a701 = a702 = a703 = a704 = a705 = a706 = a707 = a708 = a709 = a710 = \
              a711 = a712 = a713 = a714 = a715 = a716 = a717 = a718 = a719 = a720 = \
              a721 = a722 = a723 = a724 = a725 = a726 = a727 = a728 = a729 = a730 = \
              a731 = a732 = a733 = a734 = a735 = a736 = a737 = a738 = a739 = a740 = \
              a741 = a742 = a743 = a744 = a745 = a746 = a747 = a748 = a749 = a750 = \
              a751 = a752 = a753 = a754 = a755 = a756 = a757 = a758 = a759 = a760 = \
              a761 = a762 = a763 = a764 = a765 = a766 = a767 = a768 = a769 = a770 = \
              a771 = a772 = a773 = a774 = a775 = a776 = a777 = a778 = a779 = a780 = \
              a781 = a782 = a783 = a784 = a785 = a786 = a787 = a788 = a789 = a790 = \
              a791 = a792 = a793 = a794 = a795 = a796 = a797 = a798 = a799 = a800 \
                  = None
              print(a0)
  
          try:
              f()
          except NameError as exc:
              with support.captured_stderr() as err:
                  sys.__excepthook__(*sys.exc_info())
  
          self.assertNotIn("a1", err.getvalue())
  
      def test_name_error_with_custom_exceptions(self):
          def f():
              blech = None
              raise NameError()
  
          try:
              f()
          except NameError as exc:
              with support.captured_stderr() as err:
                  sys.__excepthook__(*sys.exc_info())
  
          self.assertNotIn("blech", err.getvalue())
  
          def f():
              blech = None
              raise NameError
  
          try:
              f()
          except NameError as exc:
              with support.captured_stderr() as err:
                  sys.__excepthook__(*sys.exc_info())
  
          self.assertNotIn("blech", err.getvalue())
  
      def test_unbound_local_error_doesn_not_match(self):
          def foo():
              something = 3
              print(somethong)
              somethong = 3
  
          try:
              foo()
          except UnboundLocalError as exc:
              with support.captured_stderr() as err:
                  sys.__excepthook__(*sys.exc_info())
  
          self.assertNotIn("something", err.getvalue())
  
  
  class AttributeErrorTests(unittest.TestCase):
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_attributes(self):
          # Setting 'attr' should not be a problem.
          exc = AttributeError('Ouch!')
          self.assertIsNone(exc.name)
          self.assertIsNone(exc.obj)
  
          sentinel = object()
          exc = AttributeError('Ouch', name='carry', obj=sentinel)
          self.assertEqual(exc.name, 'carry')
          self.assertIs(exc.obj, sentinel)
  
      def test_getattr_has_name_and_obj(self):
          class A:
              blech = None
  
          obj = A()
          try:
              obj.bluch
          except AttributeError as exc:
              self.assertEqual("bluch", exc.name)
              self.assertEqual(obj, exc.obj)
  
      def test_getattr_has_name_and_obj_for_method(self):
          class A:
              def blech(self):
                  return
  
          obj = A()
          try:
              obj.bluch()
          except AttributeError as exc:
              self.assertEqual("bluch", exc.name)
              self.assertEqual(obj, exc.obj)
  
      def test_getattr_suggestions(self):
          class Substitution:
              noise = more_noise = a = bc = None
              blech = None
  
          class Elimination:
              noise = more_noise = a = bc = None
              blch = None
  
          class Addition:
              noise = more_noise = a = bc = None
              bluchin = None
  
          class SubstitutionOverElimination:
              blach = None
              bluc = None
  
          class SubstitutionOverAddition:
              blach = None
              bluchi = None
  
          class EliminationOverAddition:
              blucha = None
              bluc = None
  
          for cls, suggestion in [(Substitution, "'blech'?"),
                                  (Elimination, "'blch'?"),
                                  (Addition, "'bluchin'?"),
                                  (EliminationOverAddition, "'bluc'?"),
                                  (SubstitutionOverElimination, "'blach'?"),
                                  (SubstitutionOverAddition, "'blach'?")]:
              try:
                  cls().bluch
              except AttributeError as exc:
                  with support.captured_stderr() as err:
                      sys.__excepthook__(*sys.exc_info())
  
              self.assertIn(suggestion, err.getvalue())
  
      def test_getattr_suggestions_do_not_trigger_for_long_attributes(self):
          class A:
              blech = None
  
          try:
              A().somethingverywrong
          except AttributeError as exc:
              with support.captured_stderr() as err:
                  sys.__excepthook__(*sys.exc_info())
  
          self.assertNotIn("blech", err.getvalue())
  
      def test_getattr_error_bad_suggestions_do_not_trigger_for_small_names(self):
          class MyClass:
              vvv = mom = w = id = pytho = None
  
          with self.subTest(name="b"):
              try:
                  MyClass.b
              except AttributeError as exc:
                  with support.captured_stderr() as err:
                      sys.__excepthook__(*sys.exc_info())
              self.assertNotIn("you mean", err.getvalue())
              self.assertNotIn("vvv", err.getvalue())
              self.assertNotIn("mom", err.getvalue())
              self.assertNotIn("'id'", err.getvalue())
              self.assertNotIn("'w'", err.getvalue())
              self.assertNotIn("'pytho'", err.getvalue())
  
          with self.subTest(name="v"):
              try:
                  MyClass.v
              except AttributeError as exc:
                  with support.captured_stderr() as err:
                      sys.__excepthook__(*sys.exc_info())
              self.assertNotIn("you mean", err.getvalue())
              self.assertNotIn("vvv", err.getvalue())
              self.assertNotIn("mom", err.getvalue())
              self.assertNotIn("'id'", err.getvalue())
              self.assertNotIn("'w'", err.getvalue())
              self.assertNotIn("'pytho'", err.getvalue())
  
          with self.subTest(name="m"):
              try:
                  MyClass.m
              except AttributeError as exc:
                  with support.captured_stderr() as err:
                      sys.__excepthook__(*sys.exc_info())
              self.assertNotIn("you mean", err.getvalue())
              self.assertNotIn("vvv", err.getvalue())
              self.assertNotIn("mom", err.getvalue())
              self.assertNotIn("'id'", err.getvalue())
              self.assertNotIn("'w'", err.getvalue())
              self.assertNotIn("'pytho'", err.getvalue())
  
          with self.subTest(name="py"):
              try:
                  MyClass.py
              except AttributeError as exc:
                  with support.captured_stderr() as err:
                      sys.__excepthook__(*sys.exc_info())
              self.assertNotIn("you mean", err.getvalue())
              self.assertNotIn("vvv", err.getvalue())
              self.assertNotIn("mom", err.getvalue())
              self.assertNotIn("'id'", err.getvalue())
              self.assertNotIn("'w'", err.getvalue())
              self.assertNotIn("'pytho'", err.getvalue())
  
  
      def test_getattr_suggestions_do_not_trigger_for_big_dicts(self):
          class A:
              blech = None
          # A class with a very big __dict__ will not be consider
          # for suggestions.
          for index in range(2000):
              setattr(A, f"index_{index}", None)
  
          try:
              A().bluch
          except AttributeError as exc:
              with support.captured_stderr() as err:
                  sys.__excepthook__(*sys.exc_info())
  
          self.assertNotIn("blech", err.getvalue())
  
      def test_getattr_suggestions_no_args(self):
          class A:
              blech = None
              def __getattr__(self, attr):
                  raise AttributeError()
  
          try:
              A().bluch
          except AttributeError as exc:
              with support.captured_stderr() as err:
                  sys.__excepthook__(*sys.exc_info())
  
          self.assertIn("blech", err.getvalue())
  
          class A:
              blech = None
              def __getattr__(self, attr):
                  raise AttributeError
  
          try:
              A().bluch
          except AttributeError as exc:
              with support.captured_stderr() as err:
                  sys.__excepthook__(*sys.exc_info())
  
          self.assertIn("blech", err.getvalue())
  
      def test_getattr_suggestions_invalid_args(self):
          class NonStringifyClass:
              __str__ = None
              __repr__ = None
  
          class A:
              blech = None
              def __getattr__(self, attr):
                  raise AttributeError(NonStringifyClass())
  
          class B:
              blech = None
              def __getattr__(self, attr):
                  raise AttributeError("Error", 23)
  
          class C:
              blech = None
              def __getattr__(self, attr):
                  raise AttributeError(23)
  
          for cls in [A, B, C]:
              try:
                  cls().bluch
              except AttributeError as exc:
                  with support.captured_stderr() as err:
                      sys.__excepthook__(*sys.exc_info())
  
              self.assertIn("blech", err.getvalue())
  
      def test_getattr_suggestions_for_same_name(self):
          class A:
              def __dir__(self):
                  return ['blech']
          try:
              A().blech
          except AttributeError as exc:
              with support.captured_stderr() as err:
                  sys.__excepthook__(*sys.exc_info())
  
          self.assertNotIn("Did you mean", err.getvalue())
  
      def test_attribute_error_with_failing_dict(self):
          class T:
              bluch = 1
              def __dir__(self):
                  raise AttributeError("oh no!")
  
          try:
              T().blich
          except AttributeError as exc:
              with support.captured_stderr() as err:
                  sys.__excepthook__(*sys.exc_info())
  
          self.assertNotIn("blech", err.getvalue())
          self.assertNotIn("oh no!", err.getvalue())
  
      def test_attribute_error_with_bad_name(self):
          try:
              raise AttributeError(name=12, obj=23)
          except AttributeError as exc:
              with support.captured_stderr() as err:
                  sys.__excepthook__(*sys.exc_info())
  
          self.assertNotIn("?", err.getvalue())
  
  class ImportErrorTests(unittest.TestCase):
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_attributes(self):
          # Setting 'name' and 'path' should not be a problem.
          exc = ImportError('test')
          self.assertIsNone(exc.name)
          self.assertIsNone(exc.path)
  
          exc = ImportError('test', name='somemodule')
          self.assertEqual(exc.name, 'somemodule')
          self.assertIsNone(exc.path)
  
          exc = ImportError('test', path='somepath')
          self.assertEqual(exc.path, 'somepath')
          self.assertIsNone(exc.name)
  
          exc = ImportError('test', path='somepath', name='somename')
          self.assertEqual(exc.name, 'somename')
          self.assertEqual(exc.path, 'somepath')
  
          msg = "'invalid' is an invalid keyword argument for ImportError"
          with self.assertRaisesRegex(TypeError, msg):
              ImportError('test', invalid='keyword')
  
          with self.assertRaisesRegex(TypeError, msg):
              ImportError('test', name='name', invalid='keyword')
  
          with self.assertRaisesRegex(TypeError, msg):
              ImportError('test', path='path', invalid='keyword')
  
          with self.assertRaisesRegex(TypeError, msg):
              ImportError(invalid='keyword')
  
          with self.assertRaisesRegex(TypeError, msg):
              ImportError('test', invalid='keyword', another=True)
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_reset_attributes(self):
          exc = ImportError('test', name='name', path='path')
          self.assertEqual(exc.args, ('test',))
          self.assertEqual(exc.msg, 'test')
          self.assertEqual(exc.name, 'name')
          self.assertEqual(exc.path, 'path')
  
          # Reset not specified attributes
          exc.__init__()
          self.assertEqual(exc.args, ())
          self.assertEqual(exc.msg, None)
          self.assertEqual(exc.name, None)
          self.assertEqual(exc.path, None)
  
      def test_non_str_argument(self):
          # Issue #15778
          with check_warnings(('', BytesWarning), quiet=True):
              arg = b'abc'
              exc = ImportError(arg)
              self.assertEqual(str(arg), str(exc))
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_copy_pickle(self):
          for kwargs in (dict(),
                         dict(name='somename'),
                         dict(path='somepath'),
                         dict(name='somename', path='somepath')):
              orig = ImportError('test', **kwargs)
              for proto in range(pickle.HIGHEST_PROTOCOL + 1):
                  exc = pickle.loads(pickle.dumps(orig, proto))
                  self.assertEqual(exc.args, ('test',))
                  self.assertEqual(exc.msg, 'test')
                  self.assertEqual(exc.name, orig.name)
                  self.assertEqual(exc.path, orig.path)
              for c in copy.copy, copy.deepcopy:
                  exc = c(orig)
                  self.assertEqual(exc.args, ('test',))
                  self.assertEqual(exc.msg, 'test')
                  self.assertEqual(exc.name, orig.name)
                  self.assertEqual(exc.path, orig.path)
  
  
  if __name__ == '__main__':
      unittest.main()
  