virtualEnvironment/lib/python2.7/site-packages/pip/_vendor/pkg_resources/__init__.py
def _bypass_ensure_directory(path, mode=0o777):
    """Sandbox-bypassing version of ensure_directory()"""
    if not WRITE_SUPPORT:
        raise IOError('"os.mkdir" not supported on this platform.')
    dirname, filename = split(path)
    if dirname and filename and not isdir(dirname):
        _bypass_ensure_directory(dirname)
        mkdir(dirname, mode)
def _bypass_ensure_directory(path, mode=0o777):
    """Sandbox-bypassing version of ensure_directory()"""
    if not WRITE_SUPPORT:
        raise IOError('"os.mkdir" not supported on this platform.')
    dirname, filename = split(path)
    if dirname and filename and not isdir(dirname):
        _bypass_ensure_directory(dirname)
        mkdir(dirname, mode)
Sandbox-bypassing version of ensure_directory()