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# Copyright (c) 2010-2017 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. """Utilities for writing code that runs on Python 2 and 3""" from __future__ import absolute_import import functools import itertools import operator import sys import types __author__ = "Benjamin Peterson <benjamin@python.org>" __version__ = "1.11.0" # Useful for very coarse version differentiation. PY2 = sys.version_info[0] == 2 PY3 = sys.version_info[0] == 3 PY34 = sys.version_info[0:2] >= (3, 4) if PY3: string_types = str, integer_types = int, class_types = type, text_type = str binary_type = bytes MAXSIZE = sys.maxsize else: string_types = basestring, integer_types = (int, long) class_types = (type, types.ClassType) text_type = unicode 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("getcwd", "os", "os", "getcwdu", "getcwd"), MovedAttribute("getcwdb", "os", "os", "getcwd", "getcwdb"), MovedAttribute("getoutput", "commands", "subprocess"), MovedAttribute("range", "__builtin__", "builtins", "xrange", "range"), MovedAttribute("reload_module", "__builtin__", "importlib" if PY34 else "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_base", "email.MIMEBase", "email.mime.base"), MovedModule("email_mime_image", "email.MIMEImage", "email.mime.image"), 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("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"), ] # Add windows specific modules. if sys.platform == "win32": _moved_attributes += [ 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("unquote_to_bytes", "urllib", "urllib.parse", "unquote", "unquote_to_bytes"), MovedAttribute("urlencode", "urllib", "urllib.parse"), MovedAttribute("splitquery", "urllib", "urllib.parse"), MovedAttribute("splittag", "urllib", "urllib.parse"), MovedAttribute("splituser", "urllib", "urllib.parse"), MovedAttribute("splitvalue", "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"), MovedAttribute("parse_http_list", "urllib2", "urllib.request"), MovedAttribute("parse_keqv_list", "urllib2", "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 def create_unbound_method(func, cls): return func Iterator = object else: def get_unbound_function(unbound): return unbound.im_func def create_bound_method(func, obj): return types.MethodType(func, obj, obj.__class__) def create_unbound_method(func, cls): return types.MethodType(func, None, cls) 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 d.iterkeys(kw) def itervalues(d, kw): return d.itervalues(kw) def iteritems(d, kw): return d.iteritems(kw) def iterlists(d, kw): return 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 unichr = chr import struct int2byte = struct.Struct(">B").pack del struct byte2int = operator.itemgetter(0) indexbytes = operator.getitem iterbytes = iter import io StringIO = io.StringIO BytesIO = io.BytesIO _assertCountEqual = "assertCountEqual" if sys.version_info[1] <= 1: _assertRaisesRegex = "assertRaisesRegexp" _assertRegex = "assertRegexpMatches" else: _assertRaisesRegex = "assertRaisesRegex" _assertRegex = "assertRegex" else: def b(s): return s # Workaround for standalone backslash def u(s): return unicode(s.replace(r'\\', r'\\\\'), "unicode_escape") unichr = unichr int2byte = chr def byte2int(bs): return ord(bs[0]) def indexbytes(buf, i): return ord(buf[i]) iterbytes = functools.partial(itertools.imap, ord) import StringIO StringIO = BytesIO = StringIO.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): try: if value is None: value = tp() if value.__traceback__ is not tb: raise value.with_traceback(tb) raise value finally: value = None tb = None 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): try: raise tp, value, tb finally: tb = None """) if sys.version_info[:2] == (3, 2): exec_("""def raise_from(value, from_value): try: if from_value is None: raise value raise value from from_value finally: value = None """) elif sys.version_info[:2] > (3, 2): exec_("""def raise_from(value, from_value): try: raise value from from_value finally: value = None """) 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, basestring): data = str(data) # If the file has an encoding, encode unicode with it. if (isinstance(fp, file) and isinstance(data, unicode) 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, unicode): 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, unicode): 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, unicode): want_unicode = True break if want_unicode: newline = unicode("\n") space = unicode(" ") 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(type): def __new__(cls, name, this_bases, d): return meta(name, bases, d) @classmethod def __prepare__(cls, name, this_bases): return meta.__prepare__(name, bases) 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) Back

Edit File : six.py | Size : 30.16 KB

# Copyright (c) 2010-2017 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.

"""Utilities for writing code that runs on Python 2 and 3"""

from __future__ import absolute_import

import functools
import itertools
import operator
import sys
import types

__author__ = "Benjamin Peterson <benjamin@python.org>"
__version__ = "1.11.0"

# Useful for very coarse version differentiation.
PY2 = sys.version_info[0] == 2
PY3 = sys.version_info[0] == 3
PY34 = sys.version_info[0:2] >= (3, 4)

if PY3:
    string_types = str,
    integer_types = int,
    class_types = type,
    text_type = str
    binary_type = bytes

MAXSIZE = sys.maxsize
else:
    string_types = basestring,
    integer_types = (int, long)
    class_types = (type, types.ClassType)
    text_type = unicode
    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("getcwd", "os", "os", "getcwdu", "getcwd"),
    MovedAttribute("getcwdb", "os", "os", "getcwd", "getcwdb"),
    MovedAttribute("getoutput", "commands", "subprocess"),
    MovedAttribute("range", "__builtin__", "builtins", "xrange", "range"),
    MovedAttribute("reload_module", "__builtin__", "importlib" if PY34 else "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_base", "email.MIMEBase", "email.mime.base"),
    MovedModule("email_mime_image", "email.MIMEImage", "email.mime.image"),
    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("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"),
]
# Add windows specific modules.
if sys.platform == "win32":
    _moved_attributes += [
        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("unquote_to_bytes", "urllib", "urllib.parse", "unquote", "unquote_to_bytes"),
    MovedAttribute("urlencode", "urllib", "urllib.parse"),
    MovedAttribute("splitquery", "urllib", "urllib.parse"),
    MovedAttribute("splittag", "urllib", "urllib.parse"),
    MovedAttribute("splituser", "urllib", "urllib.parse"),
    MovedAttribute("splitvalue", "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"),
    MovedAttribute("parse_http_list", "urllib2", "urllib.request"),
    MovedAttribute("parse_keqv_list", "urllib2", "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

def create_unbound_method(func, cls):
        return func

Iterator = object
else:
    def get_unbound_function(unbound):
        return unbound.im_func

def create_bound_method(func, obj):
        return types.MethodType(func, obj, obj.__class__)

def create_unbound_method(func, cls):
        return types.MethodType(func, None, cls)

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 d.iterkeys(**kw)

def itervalues(d, **kw):
        return d.itervalues(**kw)

def iteritems(d, **kw):
        return d.iteritems(**kw)

def iterlists(d, **kw):
        return 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
    unichr = chr
    import struct
    int2byte = struct.Struct(">B").pack
    del struct
    byte2int = operator.itemgetter(0)
    indexbytes = operator.getitem
    iterbytes = iter
    import io
    StringIO = io.StringIO
    BytesIO = io.BytesIO
    _assertCountEqual = "assertCountEqual"
    if sys.version_info[1] <= 1:
        _assertRaisesRegex = "assertRaisesRegexp"
        _assertRegex = "assertRegexpMatches"
    else:
        _assertRaisesRegex = "assertRaisesRegex"
        _assertRegex = "assertRegex"
else:
    def b(s):
        return s
    # Workaround for standalone backslash

def u(s):
        return unicode(s.replace(r'\\', r'\\\\'), "unicode_escape")
    unichr = unichr
    int2byte = chr

def byte2int(bs):
        return ord(bs[0])

def indexbytes(buf, i):
        return ord(buf[i])
    iterbytes = functools.partial(itertools.imap, ord)
    import StringIO
    StringIO = BytesIO = StringIO.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):
        try:
            if value is None:
                value = tp()
            if value.__traceback__ is not tb:
                raise value.with_traceback(tb)
            raise value
        finally:
            value = None
            tb = None

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):
    try:
        raise tp, value, tb
    finally:
        tb = None
""")

if sys.version_info[:2] == (3, 2):
    exec_("""def raise_from(value, from_value):
    try:
        if from_value is None:
            raise value
        raise value from from_value
    finally:
        value = None
""")
elif sys.version_info[:2] > (3, 2):
    exec_("""def raise_from(value, from_value):
    try:
        raise value from from_value
    finally:
        value = None
""")
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, basestring):
                data = str(data)
            # If the file has an encoding, encode unicode with it.
            if (isinstance(fp, file) and
                    isinstance(data, unicode) 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, unicode):
                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, unicode):
                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, unicode):
                    want_unicode = True
                    break
        if want_unicode:
            newline = unicode("\n")
            space = unicode(" ")
        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(type):

def __new__(cls, name, this_bases, d):
            return meta(name, bases, d)

@classmethod
        def __prepare__(cls, name, this_bases):
            return meta.__prepare__(name, bases)
    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)

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