capybara/virtualenv/lib/python2.7/site-packages/setuptools/dist.py
def _get_unpatched(cls):
    """Protect against re-patching the distutils if reloaded

    Also ensures that no other distutils extension monkeypatched the distutils
    first.
    """
    while cls.__module__.startswith('setuptools'):
        cls, = cls.__bases__
    if not cls.__module__.startswith('distutils'):
        raise AssertionError(
            "distutils has already been patched by %r" % cls
        )
    return cls
def _get_unpatched(cls):
    while cls.__module__.startswith('setuptools'):
        cls, = cls.__bases__
    if not cls.__module__.startswith('distutils'):
        raise AssertionError(
            "distutils has already been patched by %r" % cls
        )
    return cls
def _get_unpatched ( cls ) : while cls . __module__ . startswith ( 'setuptools' ) : cls , = cls . __bases__ if not cls . __module__ . startswith ( 'distutils' ) : raise AssertionError ( "distutils has already been patched by %r" % cls ) return cls
Protect against re-patching the distutils if reloaded

    Also ensures that no other distutils extension monkeypatched the distutils
    first.
Protect against re - patching the distutils if reloaded