# -*- coding: utf-8 -*- import sys import itertools import functools import inspect PY2 = int(sys.version_info[0]) == 2 if PY2: import urlparse urlparse = urlparse text_type = unicode binary_type = str string_types = (str, unicode) unicode = unicode basestring = basestring iterkeys = lambda d: d.iterkeys() itervalues = lambda d: d.itervalues() iteritems = lambda d: d.iteritems() zip_longest = itertools.izip_longest else: import urllib.parse urlparse = urllib.parse text_type = str binary_type = bytes string_types = (str,) unicode = str basestring = (str, bytes) iterkeys = lambda d: d.keys() itervalues = lambda d: d.values() iteritems = lambda d: d.items() zip_longest = itertools.zip_longest # From six 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): # noqa def __new__(cls, name, this_bases, d): return meta(name, bases, d) return type.__new__(metaclass, 'temporary_class', (), {})