text: """
  Collect various information about Python to help debugging test failures.
  """
  from __future__ import print_function
  import errno
  import re
  import sys
  import traceback
  import warnings
  
  
  def normalize_text(text):
      if text is None:
          return None
      text = str(text)
      text = re.sub(r'\s+', ' ', text)
      return text.strip()
  
  
  class PythonInfo:
      def __init__(self):
          self.info = {}
  
      def add(self, key, value):
          if key in self.info:
              raise ValueError("duplicate key: %r" % key)
  
          if value is None:
              return
  
          if not isinstance(value, int):
              if not isinstance(value, str):
                  # convert other objects like sys.flags to string
                  value = str(value)
  
              value = value.strip()
              if not value:
                  return
  
          self.info[key] = value
  
      def get_infos(self):
          """
          Get information as a key:value dictionary where values are strings.
          """
          return {key: str(value) for key, value in self.info.items()}
  
  
  def copy_attributes(info_add, obj, name_fmt, attributes, *, formatter=None):
      for attr in attributes:
          value = getattr(obj, attr, None)
          if value is None:
              continue
          name = name_fmt % attr
          if formatter is not None:
              value = formatter(attr, value)
          info_add(name, value)
  
  
  def copy_attr(info_add, name, mod, attr_name):
      try:
          value = getattr(mod, attr_name)
      except AttributeError:
          return
      info_add(name, value)
  
  
  def call_func(info_add, name, mod, func_name, *, formatter=None):
      try:
          func = getattr(mod, func_name)
      except AttributeError:
          return
      value = func()
      if formatter is not None:
          value = formatter(value)
      info_add(name, value)
  
  
  def collect_sys(info_add):
      attributes = (
          '_framework',
          'abiflags',
          'api_version',
          'builtin_module_names',
          'byteorder',
          'dont_write_bytecode',
          'executable',
          'flags',
          'float_info',
          'float_repr_style',
          'hash_info',
          'hexversion',
          'implementation',
          'int_info',
          'maxsize',
          'maxunicode',
          'path',
          'platform',
          'prefix',
          'thread_info',
          'version',
          'version_info',
          'winver',
      )
      copy_attributes(info_add, sys, 'sys.%s', attributes)
  
      call_func(info_add, 'sys.androidapilevel', sys, 'getandroidapilevel')
      call_func(info_add, 'sys.windowsversion', sys, 'getwindowsversion')
  
      encoding = sys.getfilesystemencoding()
      if hasattr(sys, 'getfilesystemencodeerrors'):
          encoding = '%s/%s' % (encoding, sys.getfilesystemencodeerrors())
      info_add('sys.filesystem_encoding', encoding)
  
      for name in ('stdin', 'stdout', 'stderr'):
          stream = getattr(sys, name)
          if stream is None:
              continue
          encoding = getattr(stream, 'encoding', None)
          if not encoding:
              continue
          errors = getattr(stream, 'errors', None)
          if errors:
              encoding = '%s/%s' % (encoding, errors)
          info_add('sys.%s.encoding' % name, encoding)
  
      # Were we compiled --with-pydebug or with #define Py_DEBUG?
      Py_DEBUG = hasattr(sys, 'gettotalrefcount')
      if Py_DEBUG:
          text = 'Yes (sys.gettotalrefcount() present)'
      else:
          text = 'No (sys.gettotalrefcount() missing)'
      info_add('Py_DEBUG', text)
  
  
  def collect_platform(info_add):
      import platform
  
      arch = platform.architecture()
      arch = ' '.join(filter(bool, arch))
      info_add('platform.architecture', arch)
  
      info_add('platform.python_implementation',
               platform.python_implementation())
      info_add('platform.platform',
               platform.platform(aliased=True))
  
      libc_ver = ('%s %s' % platform.libc_ver()).strip()
      if libc_ver:
          info_add('platform.libc_ver', libc_ver)
  
  
  def collect_locale(info_add):
      import locale
  
      info_add('locale.encoding', locale.getpreferredencoding(False))
  
  
  def collect_builtins(info_add):
      info_add('builtins.float.float_format', float.__getformat__("float"))
      info_add('builtins.float.double_format', float.__getformat__("double"))
  
  
  def collect_urandom(info_add):
      import os
  
      if hasattr(os, 'getrandom'):
          # PEP 524: Check if system urandom is initialized
          try:
              try:
                  os.getrandom(1, os.GRND_NONBLOCK)
                  state = 'ready (initialized)'
              except BlockingIOError as exc:
                  state = 'not seeded yet (%s)' % exc
              info_add('os.getrandom', state)
          except OSError as exc:
              # Python was compiled on a more recent Linux version
              # than the current Linux kernel: ignore OSError(ENOSYS)
              if exc.errno != errno.ENOSYS:
                  raise
  
  
  def collect_os(info_add):
      import os
  
      def format_attr(attr, value):
          if attr in ('supports_follow_symlinks', 'supports_fd',
                      'supports_effective_ids'):
              return str(sorted(func.__name__ for func in value))
          else:
              return value
  
      attributes = (
          'name',
          'supports_bytes_environ',
          'supports_effective_ids',
          'supports_fd',
          'supports_follow_symlinks',
      )
      copy_attributes(info_add, os, 'os.%s', attributes, formatter=format_attr)
  
      call_func(info_add, 'os.getcwd', os, 'getcwd')
  
      call_func(info_add, 'os.getuid', os, 'getuid')
      call_func(info_add, 'os.getgid', os, 'getgid')
      call_func(info_add, 'os.uname', os, 'uname')
  
      def format_groups(groups):
          return ', '.join(map(str, groups))
  
      call_func(info_add, 'os.getgroups', os, 'getgroups', formatter=format_groups)
  
      if hasattr(os, 'getlogin'):
          try:
              login = os.getlogin()
          except OSError:
              # getlogin() fails with "OSError: [Errno 25] Inappropriate ioctl
              # for device" on Travis CI
              pass
          else:
              info_add("os.login", login)
  
      call_func(info_add, 'os.cpu_count', os, 'cpu_count')
      call_func(info_add, 'os.getloadavg', os, 'getloadavg')
  
      # Environment variables used by the stdlib and tests. Don't log the full
      # environment: filter to list to not leak sensitive information.
      #
      # HTTP_PROXY is not logged because it can contain a password.
      ENV_VARS = frozenset((
          "APPDATA",
          "AR",
          "ARCHFLAGS",
          "ARFLAGS",
          "AUDIODEV",
          "CC",
          "CFLAGS",
          "COLUMNS",
          "COMPUTERNAME",
          "COMSPEC",
          "CPP",
          "CPPFLAGS",
          "DISPLAY",
          "DISTUTILS_DEBUG",
          "DISTUTILS_USE_SDK",
          "DYLD_LIBRARY_PATH",
          "ENSUREPIP_OPTIONS",
          "HISTORY_FILE",
          "HOME",
          "HOMEDRIVE",
          "HOMEPATH",
          "IDLESTARTUP",
          "LANG",
          "LDFLAGS",
          "LDSHARED",
          "LD_LIBRARY_PATH",
          "LINES",
          "MACOSX_DEPLOYMENT_TARGET",
          "MAILCAPS",
          "MAKEFLAGS",
          "MIXERDEV",
          "MSSDK",
          "PATH",
          "PATHEXT",
          "PIP_CONFIG_FILE",
          "PLAT",
          "POSIXLY_CORRECT",
          "PY_SAX_PARSER",
          "ProgramFiles",
          "ProgramFiles(x86)",
          "RUNNING_ON_VALGRIND",
          "SDK_TOOLS_BIN",
          "SERVER_SOFTWARE",
          "SHELL",
          "SOURCE_DATE_EPOCH",
          "SYSTEMROOT",
          "TEMP",
          "TERM",
          "TILE_LIBRARY",
          "TIX_LIBRARY",
          "TMP",
          "TMPDIR",
          "TRAVIS",
          "TZ",
          "USERPROFILE",
          "VIRTUAL_ENV",
          "WAYLAND_DISPLAY",
          "WINDIR",
          "_PYTHON_HOST_PLATFORM",
          "_PYTHON_PROJECT_BASE",
          "_PYTHON_SYSCONFIGDATA_NAME",
          "__PYVENV_LAUNCHER__",
      ))
      for name, value in os.environ.items():
          uname = name.upper()
          if (uname in ENV_VARS
             # Copy PYTHON* and LC_* variables
             or uname.startswith(("PYTHON", "LC_"))
             # Visual Studio: VS140COMNTOOLS
             or (uname.startswith("VS") and uname.endswith("COMNTOOLS"))):
              info_add('os.environ[%s]' % name, value)
  
      if hasattr(os, 'umask'):
          mask = os.umask(0)
          os.umask(mask)
          info_add("os.umask", '%03o' % mask)
  
  
  def collect_pwd(info_add):
      try:
          import pwd
      except ImportError:
          return
      import os
  
      uid = os.getuid()
      try:
          entry = pwd.getpwuid(uid)
      except KeyError:
          entry = None
  
      info_add('pwd.getpwuid(%s)'% uid,
               entry if entry is not None else '<KeyError>')
  
      if entry is None:
          # there is nothing interesting to read if the current user identifier
          # is not the password database
          return
  
      if hasattr(os, 'getgrouplist'):
          groups = os.getgrouplist(entry.pw_name, entry.pw_gid)
          groups = ', '.join(map(str, groups))
          info_add('os.getgrouplist', groups)
  
  
  def collect_readline(info_add):
      try:
          import readline
      except ImportError:
          return
  
      def format_attr(attr, value):
          if isinstance(value, int):
              return "%#x" % value
          else:
              return value
  
      attributes = (
          "_READLINE_VERSION",
          "_READLINE_RUNTIME_VERSION",
          "_READLINE_LIBRARY_VERSION",
      )
      copy_attributes(info_add, readline, 'readline.%s', attributes,
                      formatter=format_attr)
  
      if not hasattr(readline, "_READLINE_LIBRARY_VERSION"):
          # _READLINE_LIBRARY_VERSION has been added to CPython 3.7
          doc = getattr(readline, '__doc__', '')
          if 'libedit readline' in doc:
              info_add('readline.library', 'libedit readline')
          elif 'GNU readline' in doc:
              info_add('readline.library', 'GNU readline')
  
  
  def collect_gdb(info_add):
      import subprocess
  
      try:
          proc = subprocess.Popen(["gdb", "-nx", "--version"],
                                  stdout=subprocess.PIPE,
                                  stderr=subprocess.PIPE,
                                  universal_newlines=True)
          version = proc.communicate()[0]
      except OSError:
          return
  
      # Only keep the first line
      version = version.splitlines()[0]
      info_add('gdb_version', version)
  
  
  def collect_tkinter(info_add):
      try:
          import _tkinter
      except ImportError:
          pass
      else:
          attributes = ('TK_VERSION', 'TCL_VERSION')
          copy_attributes(info_add, _tkinter, 'tkinter.%s', attributes)
  
      try:
          import tkinter
      except ImportError:
          pass
      else:
          tcl = tkinter.Tcl()
          patchlevel = tcl.call('info', 'patchlevel')
          info_add('tkinter.info_patchlevel', patchlevel)
  
  
  def collect_time(info_add):
      import time
  
      info_add('time.time', time.time())
  
      attributes = (
          'altzone',
          'daylight',
          'timezone',
          'tzname',
      )
      copy_attributes(info_add, time, 'time.%s', attributes)
  
      if hasattr(time, 'get_clock_info'):
          for clock in ('clock', 'monotonic', 'perf_counter',
                        'process_time', 'thread_time', 'time'):
              try:
                  # prevent DeprecatingWarning on get_clock_info('clock')
                  with warnings.catch_warnings(record=True):
                      clock_info = time.get_clock_info(clock)
              except ValueError:
                  # missing clock like time.thread_time()
                  pass
              else:
                  info_add('time.get_clock_info(%s)' % clock, clock_info)
  
  
  def collect_datetime(info_add):
      try:
          import datetime
      except ImportError:
          return
  
      info_add('datetime.datetime.now', datetime.datetime.now())
  
  
  def collect_sysconfig(info_add):
      import sysconfig
  
      for name in (
          'ABIFLAGS',
          'ANDROID_API_LEVEL',
          'CC',
          'CCSHARED',
          'CFLAGS',
          'CFLAGSFORSHARED',
          'CONFIG_ARGS',
          'HOST_GNU_TYPE',
          'MACHDEP',
          'MULTIARCH',
          'OPT',
          'PY_CFLAGS',
          'PY_CFLAGS_NODIST',
          'PY_CORE_LDFLAGS',
          'PY_LDFLAGS',
          'PY_LDFLAGS_NODIST',
          'PY_STDMODULE_CFLAGS',
          'Py_DEBUG',
          'Py_ENABLE_SHARED',
          'SHELL',
          'SOABI',
          'prefix',
      ):
          value = sysconfig.get_config_var(name)
          if name == 'ANDROID_API_LEVEL' and not value:
              # skip ANDROID_API_LEVEL=0
              continue
          value = normalize_text(value)
          info_add('sysconfig[%s]' % name, value)
  
  
  def collect_ssl(info_add):
      try:
          import ssl
      except ImportError:
          return
  
      def format_attr(attr, value):
          if attr.startswith('OP_'):
              return '%#8x' % value
          else:
              return value
  
      attributes = (
          'OPENSSL_VERSION',
          'OPENSSL_VERSION_INFO',
          'HAS_SNI',
          'OP_ALL',
          'OP_NO_TLSv1_1',
      )
      copy_attributes(info_add, ssl, 'ssl.%s', attributes, formatter=format_attr)
  
  
  def collect_socket(info_add):
      import socket
  
      hostname = socket.gethostname()
      info_add('socket.hostname', hostname)
  
  
  def collect_sqlite(info_add):
      try:
          import sqlite3
      except ImportError:
          return
  
      attributes = ('version', 'sqlite_version')
      copy_attributes(info_add, sqlite3, 'sqlite3.%s', attributes)
  
  
  def collect_zlib(info_add):
      try:
          import zlib
      except ImportError:
          return
  
      attributes = ('ZLIB_VERSION', 'ZLIB_RUNTIME_VERSION')
      copy_attributes(info_add, zlib, 'zlib.%s', attributes)
  
  
  def collect_expat(info_add):
      try:
          from xml.parsers import expat
      except ImportError:
          return
  
      attributes = ('EXPAT_VERSION',)
      copy_attributes(info_add, expat, 'expat.%s', attributes)
  
  
  def collect_decimal(info_add):
      try:
          import _decimal
      except ImportError:
          return
  
      attributes = ('__libmpdec_version__',)
      copy_attributes(info_add, _decimal, '_decimal.%s', attributes)
  
  
  def collect_testcapi(info_add):
      try:
          import _testcapi
      except ImportError:
          return
  
      call_func(info_add, 'pymem.allocator', _testcapi, 'pymem_getallocatorsname')
      copy_attr(info_add, 'pymem.with_pymalloc', _testcapi, 'WITH_PYMALLOC')
  
  
  def collect_resource(info_add):
      try:
          import resource
      except ImportError:
          return
  
      limits = [attr for attr in dir(resource) if attr.startswith('RLIMIT_')]
      for name in limits:
          key = getattr(resource, name)
          value = resource.getrlimit(key)
          info_add('resource.%s' % name, value)
  
      call_func(info_add, 'resource.pagesize', resource, 'getpagesize')
  
  
  def collect_test_socket(info_add):
      try:
          from test import test_socket
      except ImportError:
          return
  
      # all check attributes like HAVE_SOCKET_CAN
      attributes = [name for name in dir(test_socket)
                    if name.startswith('HAVE_')]
      copy_attributes(info_add, test_socket, 'test_socket.%s', attributes)
  
  
  def collect_test_support(info_add):
      try:
          from test import support
      except ImportError:
          return
  
      attributes = ('IPV6_ENABLED',)
      copy_attributes(info_add, support, 'test_support.%s', attributes)
  
      call_func(info_add, 'test_support._is_gui_available', support, '_is_gui_available')
      call_func(info_add, 'test_support.python_is_optimized', support, 'python_is_optimized')
  
  
  def collect_cc(info_add):
      import subprocess
      import sysconfig
  
      CC = sysconfig.get_config_var('CC')
      if not CC:
          return
  
      try:
          import shlex
          args = shlex.split(CC)
      except ImportError:
          args = CC.split()
      args.append('--version')
      try:
          proc = subprocess.Popen(args,
                                  stdout=subprocess.PIPE,
                                  stderr=subprocess.STDOUT,
                                  universal_newlines=True)
      except OSError:
          # Cannot run the compiler, for example when Python has been
          # cross-compiled and installed on the target platform where the
          # compiler is missing.
          return
  
      stdout = proc.communicate()[0]
      if proc.returncode:
          # CC --version failed: ignore error
          return
  
      text = stdout.splitlines()[0]
      text = normalize_text(text)
      info_add('CC.version', text)
  
  
  def collect_gdbm(info_add):
      try:
          from _gdbm import _GDBM_VERSION
      except ImportError:
          return
  
      info_add('gdbm.GDBM_VERSION', '.'.join(map(str, _GDBM_VERSION)))
  
  
  def collect_get_config(info_add):
      # Get global configuration variables, _PyPreConfig and _PyCoreConfig
      try:
          from _testinternalcapi import get_configs
      except ImportError:
          return
  
      all_configs = get_configs()
      for config_type in sorted(all_configs):
          config = all_configs[config_type]
          for key in sorted(config):
              info_add('%s[%s]' % (config_type, key), repr(config[key]))
  
  
  def collect_subprocess(info_add):
      import subprocess
      copy_attributes(info_add, subprocess, 'subprocess.%s', ('_USE_POSIX_SPAWN',))
  
  
  def collect_windows(info_add):
      try:
          import ctypes
      except ImportError:
          return
  
      if not hasattr(ctypes, 'WinDLL'):
          return
  
      ntdll = ctypes.WinDLL('ntdll')
      BOOLEAN = ctypes.c_ubyte
  
      try:
          RtlAreLongPathsEnabled = ntdll.RtlAreLongPathsEnabled
      except AttributeError:
          res = '<function not available>'
      else:
          RtlAreLongPathsEnabled.restype = BOOLEAN
          RtlAreLongPathsEnabled.argtypes = ()
          res = bool(RtlAreLongPathsEnabled())
      info_add('windows.RtlAreLongPathsEnabled', res)
  
      try:
          import _winapi
          dll_path = _winapi.GetModuleFileName(sys.dllhandle)
          info_add('windows.dll_path', dll_path)
      except (ImportError, AttributeError):
          pass
  
  
  def collect_info(info):
      error = False
      info_add = info.add
  
      for collect_func in (
          # collect_urandom() must be the first, to check the getrandom() status.
          # Other functions may block on os.urandom() indirectly and so change
          # its state.
          collect_urandom,
  
          collect_builtins,
          collect_cc,
          collect_datetime,
          collect_decimal,
          collect_expat,
          collect_gdb,
          collect_gdbm,
          collect_get_config,
          collect_locale,
          collect_os,
          collect_platform,
          collect_pwd,
          collect_readline,
          collect_resource,
          collect_socket,
          collect_sqlite,
          collect_ssl,
          collect_subprocess,
          collect_sys,
          collect_sysconfig,
          collect_testcapi,
          collect_time,
          collect_tkinter,
          collect_windows,
          collect_zlib,
  
          # Collecting from tests should be last as they have side effects.
          collect_test_socket,
          collect_test_support,
      ):
          try:
              collect_func(info_add)
          except Exception as exc:
              error = True
              print("ERROR: %s() failed" % (collect_func.__name__),
                    file=sys.stderr)
              traceback.print_exc(file=sys.stderr)
              print(file=sys.stderr)
              sys.stderr.flush()
  
      return error
  
  
  def dump_info(info, file=None):
      title = "Python debug information"
      print(title)
      print("=" * len(title))
      print()
  
      infos = info.get_infos()
      infos = sorted(infos.items())
      for key, value in infos:
          value = value.replace("\n", " ")
          print("%s: %s" % (key, value))
      print()
  
  
  def main():
      info = PythonInfo()
      error = collect_info(info)
      dump_info(info)
  
      if error:
          print("Collection failed: exit with error", file=sys.stderr)
          sys.exit(1)
  
  
  if __name__ == "__main__":
      main()
  