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Filename :
_compat.py
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# -*- coding: utf-8 -*- # flake8: noqa import marshal import sys PY2 = sys.version_info[0] == 2 PYPY = hasattr(sys, "pypy_translation_info") _identity = lambda x: x if not PY2: unichr = chr range_type = range text_type = str string_types = (str,) integer_types = (int,) iterkeys = lambda d: iter(d.keys()) itervalues = lambda d: iter(d.values()) iteritems = lambda d: iter(d.items()) import pickle from io import BytesIO, StringIO NativeStringIO = StringIO def reraise(tp, value, tb=None): if value.__traceback__ is not tb: raise value.with_traceback(tb) raise value ifilter = filter imap = map izip = zip intern = sys.intern implements_iterator = _identity implements_to_string = _identity encode_filename = _identity marshal_dump = marshal.dump marshal_load = marshal.load else: unichr = unichr text_type = unicode range_type = xrange string_types = (str, unicode) integer_types = (int, long) iterkeys = lambda d: d.iterkeys() itervalues = lambda d: d.itervalues() iteritems = lambda d: d.iteritems() import cPickle as pickle from cStringIO import StringIO as BytesIO, StringIO NativeStringIO = BytesIO exec("def reraise(tp, value, tb=None):\n raise tp, value, tb") from itertools import imap, izip, ifilter intern = intern def implements_iterator(cls): cls.next = cls.__next__ del cls.__next__ return cls def implements_to_string(cls): cls.__unicode__ = cls.__str__ cls.__str__ = lambda x: x.__unicode__().encode("utf-8") return cls def encode_filename(filename): if isinstance(filename, unicode): return filename.encode("utf-8") return filename def marshal_dump(code, f): if isinstance(f, file): marshal.dump(code, f) else: f.write(marshal.dumps(code)) def marshal_load(f): if isinstance(f, file): return marshal.load(f) return marshal.loads(f.read()) 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) return type.__new__(metaclass, "temporary_class", (), {}) try: from urllib.parse import quote_from_bytes as url_quote except ImportError: from urllib import quote as url_quote try: from collections import abc except ImportError: import collections as abc try: from os import fspath except ImportError: try: from pathlib import PurePath except ImportError: PurePath = None def fspath(path): if hasattr(path, "__fspath__"): return path.__fspath__() # Python 3.5 doesn't have __fspath__ yet, use str. if PurePath is not None and isinstance(path, PurePath): return str(path) return path