text: """Utilities for writing code that runs on Python 2 and 3"""
  
  # Copyright (c) 2010-2015 Benjamin Peterson
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in all
  # copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  
  
  
  import functools
  import itertools
  import operator
  import sys
  import types
  
  __author__ = "Benjamin Peterson <benjamin@python.org>"
  __version__ = "1.9.0"
  
  
  # Useful for very coarse version differentiation.
  PY2 = sys.version_info[0] == 2
  PY3 = sys.version_info[0] == 3
  
  if PY3:
      string_types = str,
      integer_types = int,
      class_types = type,
      text_type = str
      binary_type = bytes
  
      MAXSIZE = sys.maxsize
  else:
      string_types = str,
      integer_types = (int, int)
      class_types = (type, type)
      text_type = str
      binary_type = str
  
      if sys.platform.startswith("java"):
          # Jython always uses 32 bits.
          MAXSIZE = int((1 << 31) - 1)
      else:
          # It's possible to have sizeof(long) != sizeof(Py_ssize_t).
          class X(object):
              def __len__(self):
                  return 1 << 31
          try:
              len(X())
          except OverflowError:
              # 32-bit
              MAXSIZE = int((1 << 31) - 1)
          else:
              # 64-bit
              MAXSIZE = int((1 << 63) - 1)
          del X
  
  
  def _add_doc(func, doc):
      """Add documentation to a function."""
      func.__doc__ = doc
  
  
  def _import_module(name):
      """Import module, returning the module after the last dot."""
      __import__(name)
      return sys.modules[name]
  
  
  class _LazyDescr(object):
  
      def __init__(self, name):
          self.name = name
  
      def __get__(self, obj, tp):
          result = self._resolve()
          setattr(obj, self.name, result) # Invokes __set__.
          try:
              # This is a bit ugly, but it avoids running this again by
              # removing this descriptor.
              delattr(obj.__class__, self.name)
          except AttributeError:
              pass
          return result
  
  
  class MovedModule(_LazyDescr):
  
      def __init__(self, name, old, new=None):
          super(MovedModule, self).__init__(name)
          if PY3:
              if new is None:
                  new = name
              self.mod = new
          else:
              self.mod = old
  
      def _resolve(self):
          return _import_module(self.mod)
  
      def __getattr__(self, attr):
          _module = self._resolve()
          value = getattr(_module, attr)
          setattr(self, attr, value)
          return value
  
  
  class _LazyModule(types.ModuleType):
  
      def __init__(self, name):
          super(_LazyModule, self).__init__(name)
          self.__doc__ = self.__class__.__doc__
  
      def __dir__(self):
          attrs = ["__doc__", "__name__"]
          attrs += [attr.name for attr in self._moved_attributes]
          return attrs
  
      # Subclasses should override this
      _moved_attributes = []
  
  
  class MovedAttribute(_LazyDescr):
  
      def __init__(self, name, old_mod, new_mod, old_attr=None, new_attr=None):
          super(MovedAttribute, self).__init__(name)
          if PY3:
              if new_mod is None:
                  new_mod = name
              self.mod = new_mod
              if new_attr is None:
                  if old_attr is None:
                      new_attr = name
                  else:
                      new_attr = old_attr
              self.attr = new_attr
          else:
              self.mod = old_mod
              if old_attr is None:
                  old_attr = name
              self.attr = old_attr
  
      def _resolve(self):
          module = _import_module(self.mod)
          return getattr(module, self.attr)
  
  
  class _SixMetaPathImporter(object):
      """
      A meta path importer to import six.moves and its submodules.
  
      This class implements a PEP302 finder and loader. It should be compatible
      with Python 2.5 and all existing versions of Python3
      """
      def __init__(self, six_module_name):
          self.name = six_module_name
          self.known_modules = {}
  
      def _add_module(self, mod, *fullnames):
          for fullname in fullnames:
              self.known_modules[self.name + "." + fullname] = mod
  
      def _get_module(self, fullname):
          return self.known_modules[self.name + "." + fullname]
  
      def find_module(self, fullname, path=None):
          if fullname in self.known_modules:
              return self
          return None
  
      def __get_module(self, fullname):
          try:
              return self.known_modules[fullname]
          except KeyError:
              raise ImportError("This loader does not know module " + fullname)
  
      def load_module(self, fullname):
          try:
              # in case of a reload
              return sys.modules[fullname]
          except KeyError:
              pass
          mod = self.__get_module(fullname)
          if isinstance(mod, MovedModule):
              mod = mod._resolve()
          else:
              mod.__loader__ = self
          sys.modules[fullname] = mod
          return mod
  
      def is_package(self, fullname):
          """
          Return true, if the named module is a package.
  
          We need this method to get correct spec objects with
          Python 3.4 (see PEP451)
          """
          return hasattr(self.__get_module(fullname), "__path__")
  
      def get_code(self, fullname):
          """Return None
  
          Required, if is_package is implemented"""
          self.__get_module(fullname)  # eventually raises ImportError
          return None
      get_source = get_code  # same as get_code
  
  _importer = _SixMetaPathImporter(__name__)
  
  
  class _MovedItems(_LazyModule):
      """Lazy loading of moved objects"""
      __path__ = []  # mark as package
  
  
  _moved_attributes = [
      MovedAttribute("cStringIO", "cStringIO", "io", "StringIO"),
      MovedAttribute("filter", "itertools", "builtins", "ifilter", "filter"),
      MovedAttribute("filterfalse", "itertools", "itertools", "ifilterfalse", "filterfalse"),
      MovedAttribute("input", "__builtin__", "builtins", "raw_input", "input"),
      MovedAttribute("intern", "__builtin__", "sys"),
      MovedAttribute("map", "itertools", "builtins", "imap", "map"),
      MovedAttribute("range", "__builtin__", "builtins", "xrange", "range"),
      MovedAttribute("reload_module", "__builtin__", "imp", "reload"),
      MovedAttribute("reduce", "__builtin__", "functools"),
      MovedAttribute("shlex_quote", "pipes", "shlex", "quote"),
      MovedAttribute("StringIO", "StringIO", "io"),
      MovedAttribute("UserDict", "UserDict", "collections"),
      MovedAttribute("UserList", "UserList", "collections"),
      MovedAttribute("UserString", "UserString", "collections"),
      MovedAttribute("xrange", "__builtin__", "builtins", "xrange", "range"),
      MovedAttribute("zip", "itertools", "builtins", "izip", "zip"),
      MovedAttribute("zip_longest", "itertools", "itertools", "izip_longest", "zip_longest"),
  
      MovedModule("builtins", "__builtin__"),
      MovedModule("configparser", "ConfigParser"),
      MovedModule("copyreg", "copy_reg"),
      MovedModule("dbm_gnu", "gdbm", "dbm.gnu"),
      MovedModule("_dummy_thread", "dummy_thread", "_dummy_thread"),
      MovedModule("http_cookiejar", "cookielib", "http.cookiejar"),
      MovedModule("http_cookies", "Cookie", "http.cookies"),
      MovedModule("html_entities", "htmlentitydefs", "html.entities"),
      MovedModule("html_parser", "HTMLParser", "html.parser"),
      MovedModule("http_client", "httplib", "http.client"),
      MovedModule("email_mime_multipart", "email.MIMEMultipart", "email.mime.multipart"),
      MovedModule("email_mime_nonmultipart", "email.MIMENonMultipart", "email.mime.nonmultipart"),
      MovedModule("email_mime_text", "email.MIMEText", "email.mime.text"),
      MovedModule("email_mime_base", "email.MIMEBase", "email.mime.base"),
      MovedModule("BaseHTTPServer", "BaseHTTPServer", "http.server"),
      MovedModule("CGIHTTPServer", "CGIHTTPServer", "http.server"),
      MovedModule("SimpleHTTPServer", "SimpleHTTPServer", "http.server"),
      MovedModule("cPickle", "cPickle", "pickle"),
      MovedModule("queue", "Queue"),
      MovedModule("reprlib", "repr"),
      MovedModule("socketserver", "SocketServer"),
      MovedModule("_thread", "thread", "_thread"),
      MovedModule("tkinter", "Tkinter"),
      MovedModule("tkinter_dialog", "Dialog", "tkinter.dialog"),
      MovedModule("tkinter_filedialog", "FileDialog", "tkinter.filedialog"),
      MovedModule("tkinter_scrolledtext", "ScrolledText", "tkinter.scrolledtext"),
      MovedModule("tkinter_simpledialog", "SimpleDialog", "tkinter.simpledialog"),
      MovedModule("tkinter_tix", "Tix", "tkinter.tix"),
      MovedModule("tkinter_ttk", "ttk", "tkinter.ttk"),
      MovedModule("tkinter_constants", "Tkconstants", "tkinter.constants"),
      MovedModule("tkinter_dnd", "Tkdnd", "tkinter.dnd"),
      MovedModule("tkinter_colorchooser", "tkColorChooser",
                  "tkinter.colorchooser"),
      MovedModule("tkinter_commondialog", "tkCommonDialog",
                  "tkinter.commondialog"),
      MovedModule("tkinter_tkfiledialog", "tkFileDialog", "tkinter.filedialog"),
      MovedModule("tkinter_font", "tkFont", "tkinter.font"),
      MovedModule("tkinter_messagebox", "tkMessageBox", "tkinter.messagebox"),
      MovedModule("tkinter_tksimpledialog", "tkSimpleDialog",
                  "tkinter.simpledialog"),
      MovedModule("urllib_parse", __name__ + ".moves.urllib_parse", "urllib.parse"),
      MovedModule("urllib_error", __name__ + ".moves.urllib_error", "urllib.error"),
      MovedModule("urllib", __name__ + ".moves.urllib", __name__ + ".moves.urllib"),
      MovedModule("urllib_robotparser", "robotparser", "urllib.robotparser"),
      MovedModule("xmlrpc_client", "xmlrpclib", "xmlrpc.client"),
      MovedModule("xmlrpc_server", "SimpleXMLRPCServer", "xmlrpc.server"),
      MovedModule("winreg", "_winreg"),
  ]
  for attr in _moved_attributes:
      setattr(_MovedItems, attr.name, attr)
      if isinstance(attr, MovedModule):
          _importer._add_module(attr, "moves." + attr.name)
  del attr
  
  _MovedItems._moved_attributes = _moved_attributes
  
  moves = _MovedItems(__name__ + ".moves")
  _importer._add_module(moves, "moves")
  
  
  class Module_six_moves_urllib_parse(_LazyModule):
      """Lazy loading of moved objects in six.moves.urllib_parse"""
  
  
  _urllib_parse_moved_attributes = [
      MovedAttribute("ParseResult", "urlparse", "urllib.parse"),
      MovedAttribute("SplitResult", "urlparse", "urllib.parse"),
      MovedAttribute("parse_qs", "urlparse", "urllib.parse"),
      MovedAttribute("parse_qsl", "urlparse", "urllib.parse"),
      MovedAttribute("urldefrag", "urlparse", "urllib.parse"),
      MovedAttribute("urljoin", "urlparse", "urllib.parse"),
      MovedAttribute("urlparse", "urlparse", "urllib.parse"),
      MovedAttribute("urlsplit", "urlparse", "urllib.parse"),
      MovedAttribute("urlunparse", "urlparse", "urllib.parse"),
      MovedAttribute("urlunsplit", "urlparse", "urllib.parse"),
      MovedAttribute("quote", "urllib", "urllib.parse"),
      MovedAttribute("quote_plus", "urllib", "urllib.parse"),
      MovedAttribute("unquote", "urllib", "urllib.parse"),
      MovedAttribute("unquote_plus", "urllib", "urllib.parse"),
      MovedAttribute("urlencode", "urllib", "urllib.parse"),
      MovedAttribute("splitquery", "urllib", "urllib.parse"),
      MovedAttribute("splittag", "urllib", "urllib.parse"),
      MovedAttribute("splituser", "urllib", "urllib.parse"),
      MovedAttribute("uses_fragment", "urlparse", "urllib.parse"),
      MovedAttribute("uses_netloc", "urlparse", "urllib.parse"),
      MovedAttribute("uses_params", "urlparse", "urllib.parse"),
      MovedAttribute("uses_query", "urlparse", "urllib.parse"),
      MovedAttribute("uses_relative", "urlparse", "urllib.parse"),
  ]
  for attr in _urllib_parse_moved_attributes:
      setattr(Module_six_moves_urllib_parse, attr.name, attr)
  del attr
  
  Module_six_moves_urllib_parse._moved_attributes = _urllib_parse_moved_attributes
  
  _importer._add_module(Module_six_moves_urllib_parse(__name__ + ".moves.urllib_parse"),
                        "moves.urllib_parse", "moves.urllib.parse")
  
  
  class Module_six_moves_urllib_error(_LazyModule):
      """Lazy loading of moved objects in six.moves.urllib_error"""
  
  
  _urllib_error_moved_attributes = [
      MovedAttribute("URLError", "urllib2", "urllib.error"),
      MovedAttribute("HTTPError", "urllib2", "urllib.error"),
      MovedAttribute("ContentTooShortError", "urllib", "urllib.error"),
  ]
  for attr in _urllib_error_moved_attributes:
      setattr(Module_six_moves_urllib_error, attr.name, attr)
  del attr
  
  Module_six_moves_urllib_error._moved_attributes = _urllib_error_moved_attributes
  
  _importer._add_module(Module_six_moves_urllib_error(__name__ + ".moves.urllib.error"),
                        "moves.urllib_error", "moves.urllib.error")
  
  
  class Module_six_moves_urllib_request(_LazyModule):
      """Lazy loading of moved objects in six.moves.urllib_request"""
  
  
  _urllib_request_moved_attributes = [
      MovedAttribute("urlopen", "urllib2", "urllib.request"),
      MovedAttribute("install_opener", "urllib2", "urllib.request"),
      MovedAttribute("build_opener", "urllib2", "urllib.request"),
      MovedAttribute("pathname2url", "urllib", "urllib.request"),
      MovedAttribute("url2pathname", "urllib", "urllib.request"),
      MovedAttribute("getproxies", "urllib", "urllib.request"),
      MovedAttribute("Request", "urllib2", "urllib.request"),
      MovedAttribute("OpenerDirector", "urllib2", "urllib.request"),
      MovedAttribute("HTTPDefaultErrorHandler", "urllib2", "urllib.request"),
      MovedAttribute("HTTPRedirectHandler", "urllib2", "urllib.request"),
      MovedAttribute("HTTPCookieProcessor", "urllib2", "urllib.request"),
      MovedAttribute("ProxyHandler", "urllib2", "urllib.request"),
      MovedAttribute("BaseHandler", "urllib2", "urllib.request"),
      MovedAttribute("HTTPPasswordMgr", "urllib2", "urllib.request"),
      MovedAttribute("HTTPPasswordMgrWithDefaultRealm", "urllib2", "urllib.request"),
      MovedAttribute("AbstractBasicAuthHandler", "urllib2", "urllib.request"),
      MovedAttribute("HTTPBasicAuthHandler", "urllib2", "urllib.request"),
      MovedAttribute("ProxyBasicAuthHandler", "urllib2", "urllib.request"),
      MovedAttribute("AbstractDigestAuthHandler", "urllib2", "urllib.request"),
      MovedAttribute("HTTPDigestAuthHandler", "urllib2", "urllib.request"),
      MovedAttribute("ProxyDigestAuthHandler", "urllib2", "urllib.request"),
      MovedAttribute("HTTPHandler", "urllib2", "urllib.request"),
      MovedAttribute("HTTPSHandler", "urllib2", "urllib.request"),
      MovedAttribute("FileHandler", "urllib2", "urllib.request"),
      MovedAttribute("FTPHandler", "urllib2", "urllib.request"),
      MovedAttribute("CacheFTPHandler", "urllib2", "urllib.request"),
      MovedAttribute("UnknownHandler", "urllib2", "urllib.request"),
      MovedAttribute("HTTPErrorProcessor", "urllib2", "urllib.request"),
      MovedAttribute("urlretrieve", "urllib", "urllib.request"),
      MovedAttribute("urlcleanup", "urllib", "urllib.request"),
      MovedAttribute("URLopener", "urllib", "urllib.request"),
      MovedAttribute("FancyURLopener", "urllib", "urllib.request"),
      MovedAttribute("proxy_bypass", "urllib", "urllib.request"),
  ]
  for attr in _urllib_request_moved_attributes:
      setattr(Module_six_moves_urllib_request, attr.name, attr)
  del attr
  
  Module_six_moves_urllib_request._moved_attributes = _urllib_request_moved_attributes
  
  _importer._add_module(Module_six_moves_urllib_request(__name__ + ".moves.urllib.request"),
                        "moves.urllib_request", "moves.urllib.request")
  
  
  class Module_six_moves_urllib_response(_LazyModule):
      """Lazy loading of moved objects in six.moves.urllib_response"""
  
  
  _urllib_response_moved_attributes = [
      MovedAttribute("addbase", "urllib", "urllib.response"),
      MovedAttribute("addclosehook", "urllib", "urllib.response"),
      MovedAttribute("addinfo", "urllib", "urllib.response"),
      MovedAttribute("addinfourl", "urllib", "urllib.response"),
  ]
  for attr in _urllib_response_moved_attributes:
      setattr(Module_six_moves_urllib_response, attr.name, attr)
  del attr
  
  Module_six_moves_urllib_response._moved_attributes = _urllib_response_moved_attributes
  
  _importer._add_module(Module_six_moves_urllib_response(__name__ + ".moves.urllib.response"),
                        "moves.urllib_response", "moves.urllib.response")
  
  
  class Module_six_moves_urllib_robotparser(_LazyModule):
      """Lazy loading of moved objects in six.moves.urllib_robotparser"""
  
  
  _urllib_robotparser_moved_attributes = [
      MovedAttribute("RobotFileParser", "robotparser", "urllib.robotparser"),
  ]
  for attr in _urllib_robotparser_moved_attributes:
      setattr(Module_six_moves_urllib_robotparser, attr.name, attr)
  del attr
  
  Module_six_moves_urllib_robotparser._moved_attributes = _urllib_robotparser_moved_attributes
  
  _importer._add_module(Module_six_moves_urllib_robotparser(__name__ + ".moves.urllib.robotparser"),
                        "moves.urllib_robotparser", "moves.urllib.robotparser")
  
  
  class Module_six_moves_urllib(types.ModuleType):
      """Create a six.moves.urllib namespace that resembles the Python 3 namespace"""
      __path__ = []  # mark as package
      parse = _importer._get_module("moves.urllib_parse")
      error = _importer._get_module("moves.urllib_error")
      request = _importer._get_module("moves.urllib_request")
      response = _importer._get_module("moves.urllib_response")
      robotparser = _importer._get_module("moves.urllib_robotparser")
  
      def __dir__(self):
          return ['parse', 'error', 'request', 'response', 'robotparser']
  
  _importer._add_module(Module_six_moves_urllib(__name__ + ".moves.urllib"),
                        "moves.urllib")
  
  
  def add_move(move):
      """Add an item to six.moves."""
      setattr(_MovedItems, move.name, move)
  
  
  def remove_move(name):
      """Remove item from six.moves."""
      try:
          delattr(_MovedItems, name)
      except AttributeError:
          try:
              del moves.__dict__[name]
          except KeyError:
              raise AttributeError("no such move, %r" % (name,))
  
  
  if PY3:
      _meth_func = "__func__"
      _meth_self = "__self__"
  
      _func_closure = "__closure__"
      _func_code = "__code__"
      _func_defaults = "__defaults__"
      _func_globals = "__globals__"
  else:
      _meth_func = "im_func"
      _meth_self = "im_self"
  
      _func_closure = "func_closure"
      _func_code = "func_code"
      _func_defaults = "func_defaults"
      _func_globals = "func_globals"
  
  
  try:
      advance_iterator = next
  except NameError:
      def advance_iterator(it):
          return it.__next__()
  next = advance_iterator
  
  
  try:
      callable = callable
  except NameError:
      def callable(obj):
          return any("__call__" in klass.__dict__ for klass in type(obj).__mro__)
  
  
  if PY3:
      def get_unbound_function(unbound):
          return unbound
  
      create_bound_method = types.MethodType
  
      Iterator = object
  else:
      def get_unbound_function(unbound):
          return unbound.__func__
  
      def create_bound_method(func, obj):
          return types.MethodType(func, obj, obj.__class__)
  
      class Iterator(object):
  
          def __next__(self):
              return type(self).__next__(self)
  
      callable = callable
  _add_doc(get_unbound_function,
           """Get the function out of a possibly unbound function""")
  
  
  get_method_function = operator.attrgetter(_meth_func)
  get_method_self = operator.attrgetter(_meth_self)
  get_function_closure = operator.attrgetter(_func_closure)
  get_function_code = operator.attrgetter(_func_code)
  get_function_defaults = operator.attrgetter(_func_defaults)
  get_function_globals = operator.attrgetter(_func_globals)
  
  
  if PY3:
      def iterkeys(d, **kw):
          return iter(d.keys(**kw))
  
      def itervalues(d, **kw):
          return iter(d.values(**kw))
  
      def iteritems(d, **kw):
          return iter(d.items(**kw))
  
      def iterlists(d, **kw):
          return iter(d.lists(**kw))
  
      viewkeys = operator.methodcaller("keys")
  
      viewvalues = operator.methodcaller("values")
  
      viewitems = operator.methodcaller("items")
  else:
      def iterkeys(d, **kw):
          return iter(d.iterkeys(**kw))
  
      def itervalues(d, **kw):
          return iter(d.itervalues(**kw))
  
      def iteritems(d, **kw):
          return iter(d.iteritems(**kw))
  
      def iterlists(d, **kw):
          return iter(d.iterlists(**kw))
  
      viewkeys = operator.methodcaller("viewkeys")
  
      viewvalues = operator.methodcaller("viewvalues")
  
      viewitems = operator.methodcaller("viewitems")
  
  _add_doc(iterkeys, "Return an iterator over the keys of a dictionary.")
  _add_doc(itervalues, "Return an iterator over the values of a dictionary.")
  _add_doc(iteritems,
           "Return an iterator over the (key, value) pairs of a dictionary.")
  _add_doc(iterlists,
           "Return an iterator over the (key, [values]) pairs of a dictionary.")
  
  
  if PY3:
      def b(s):
          return s.encode("latin-1")
      def u(s):
          return s
      chr = chr
      if sys.version_info[1] <= 1:
          def int2byte(i):
              return bytes((i,))
      else:
          # This is about 2x faster than the implementation above on 3.2+
          int2byte = operator.methodcaller("to_bytes", 1, "big")
      byte2int = operator.itemgetter(0)
      indexbytes = operator.getitem
      iterbytes = iter
      import io
      StringIO = io.StringIO
      BytesIO = io.BytesIO
      _assertCountEqual = "assertCountEqual"
      _assertRaisesRegex = "assertRaisesRegex"
      _assertRegex = "assertRegex"
  else:
      def b(s):
          return s
      # Workaround for standalone backslash
      def u(s):
          return str(s.replace(r'\\', r'\\\\'), "unicode_escape")
      chr = chr
      int2byte = chr
      def byte2int(bs):
          return ord(bs[0])
      def indexbytes(buf, i):
          return ord(buf[i])
      iterbytes = functools.partial(itertools.imap, ord)
      import io
      StringIO = BytesIO = io.StringIO
      _assertCountEqual = "assertItemsEqual"
      _assertRaisesRegex = "assertRaisesRegexp"
      _assertRegex = "assertRegexpMatches"
  _add_doc(b, """Byte literal""")
  _add_doc(u, """Text literal""")
  
  
  def assertCountEqual(self, *args, **kwargs):
      return getattr(self, _assertCountEqual)(*args, **kwargs)
  
  
  def assertRaisesRegex(self, *args, **kwargs):
      return getattr(self, _assertRaisesRegex)(*args, **kwargs)
  
  
  def assertRegex(self, *args, **kwargs):
      return getattr(self, _assertRegex)(*args, **kwargs)
  
  
  if PY3:
      exec_ = getattr(moves.builtins, "exec")
  
  
      def reraise(tp, value, tb=None):
          if value is None:
              value = tp()
          if value.__traceback__ is not tb:
              raise value.with_traceback(tb)
          raise value
  
  else:
      def exec_(_code_, _globs_=None, _locs_=None):
          """Execute code in a namespace."""
          if _globs_ is None:
              frame = sys._getframe(1)
              _globs_ = frame.f_globals
              if _locs_ is None:
                  _locs_ = frame.f_locals
              del frame
          elif _locs_ is None:
              _locs_ = _globs_
          exec("""exec _code_ in _globs_, _locs_""")
  
  
      exec_("""def reraise(tp, value, tb=None):
      raise tp, value, tb
  """)
  
  
  if sys.version_info[:2] == (3, 2):
      exec_("""def raise_from(value, from_value):
      if from_value is None:
          raise value
      raise value from from_value
  """)
  elif sys.version_info[:2] > (3, 2):
      exec_("""def raise_from(value, from_value):
      raise value from from_value
  """)
  else:
      def raise_from(value, from_value):
          raise value
  
  
  print_ = getattr(moves.builtins, "print", None)
  if print_ is None:
      def print_(*args, **kwargs):
          """The new-style print function for Python 2.4 and 2.5."""
          fp = kwargs.pop("file", sys.stdout)
          if fp is None:
              return
          def write(data):
              if not isinstance(data, str):
                  data = str(data)
              # If the file has an encoding, encode unicode with it.
              if (isinstance(fp, file) and
                  isinstance(data, str) and
                  fp.encoding is not None):
                  errors = getattr(fp, "errors", None)
                  if errors is None:
                      errors = "strict"
                  data = data.encode(fp.encoding, errors)
              fp.write(data)
          want_unicode = False
          sep = kwargs.pop("sep", None)
          if sep is not None:
              if isinstance(sep, str):
                  want_unicode = True
              elif not isinstance(sep, str):
                  raise TypeError("sep must be None or a string")
          end = kwargs.pop("end", None)
          if end is not None:
              if isinstance(end, str):
                  want_unicode = True
              elif not isinstance(end, str):
                  raise TypeError("end must be None or a string")
          if kwargs:
              raise TypeError("invalid keyword arguments to print()")
          if not want_unicode:
              for arg in args:
                  if isinstance(arg, str):
                      want_unicode = True
                      break
          if want_unicode:
              newline = str("\n")
              space = str(" ")
          else:
              newline = "\n"
              space = " "
          if sep is None:
              sep = space
          if end is None:
              end = newline
          for i, arg in enumerate(args):
              if i:
                  write(sep)
              write(arg)
          write(end)
  if sys.version_info[:2] < (3, 3):
      _print = print_
      def print_(*args, **kwargs):
          fp = kwargs.get("file", sys.stdout)
          flush = kwargs.pop("flush", False)
          _print(*args, **kwargs)
          if flush and fp is not None:
              fp.flush()
  
  _add_doc(reraise, """Reraise an exception.""")
  
  if sys.version_info[0:2] < (3, 4):
      def wraps(wrapped, assigned=functools.WRAPPER_ASSIGNMENTS,
                updated=functools.WRAPPER_UPDATES):
          def wrapper(f):
              f = functools.wraps(wrapped, assigned, updated)(f)
              f.__wrapped__ = wrapped
              return f
          return wrapper
  else:
      wraps = functools.wraps
  
  def with_metaclass(meta, *bases):
      """Create a base class with a metaclass."""
      # This requires a bit of explanation: the basic idea is to make a dummy
      # metaclass for one level of class instantiation that replaces itself with
      # the actual metaclass.
      class metaclass(meta):
          def __new__(cls, name, this_bases, d):
              return meta(name, bases, d)
      return type.__new__(metaclass, 'temporary_class', (), {})
  
  
  def add_metaclass(metaclass):
      """Class decorator for creating a class with a metaclass."""
      def wrapper(cls):
          orig_vars = cls.__dict__.copy()
          slots = orig_vars.get('__slots__')
          if slots is not None:
              if isinstance(slots, str):
                  slots = [slots]
              for slots_var in slots:
                  orig_vars.pop(slots_var)
          orig_vars.pop('__dict__', None)
          orig_vars.pop('__weakref__', None)
          return metaclass(cls.__name__, cls.__bases__, orig_vars)
      return wrapper
  
  
  def python_2_unicode_compatible(klass):
      """
      A decorator that defines __unicode__ and __str__ methods under Python 2.
      Under Python 3 it does nothing.
  
      To support Python 2 and 3 with a single code base, define a __str__ method
      returning text and apply this decorator to the class.
      """
      if PY2:
          if '__str__' not in klass.__dict__:
              raise ValueError("@python_2_unicode_compatible cannot be applied "
                               "to %s because it doesn't define __str__()." %
                               klass.__name__)
          klass.__unicode__ = klass.__str__
          klass.__str__ = lambda self: self.__unicode__().encode('utf-8')
      return klass
  
  
  # Complete the moves implementation.
  # This code is at the end of this module to speed up module loading.
  # Turn this module into a package.
  __path__ = []  # required for PEP 302 and PEP 451
  __package__ = __name__  # see PEP 366 @ReservedAssignment
  if globals().get("__spec__") is not None:
      __spec__.submodule_search_locations = []  # PEP 451 @UndefinedVariable
  # Remove other six meta path importers, since they cause problems. This can
  # happen if six is removed from sys.modules and then reloaded. (Setuptools does
  # this for some reason.)
  if sys.meta_path:
      for i, importer in enumerate(sys.meta_path):
          # Here's some real nastiness: Another "instance" of the six module might
          # be floating around. Therefore, we can't use isinstance() to check for
          # the six meta path importer, since the other six instance will have
          # inserted an importer with different class.
          if (type(importer).__name__ == "_SixMetaPathImporter" and
              importer.name == __name__):
              del sys.meta_path[i]
              break
      del i, importer
  # Finally, add the importer to the meta path import hook.
  sys.meta_path.append(_importer)
  