six.py - mozsearch

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import sys

import operator

# https://github.com/benjaminp/six/blob/2c3492a9f16d294cd5e6b43d6110c5a3a2e58b4c/six.py#L818

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', (), {})

# https://github.com/benjaminp/six/blob/2c3492a9f16d294cd5e6b43d6110c5a3a2e58b4c/six.py#L578

if sys.version_info[0] == 3:

    viewitems = operator.methodcaller("items")

else:

    viewitems = operator.methodcaller("viewitems")