misc_util.py 文件源码

def get_path_from_frame(frame, parent_path=None):
    """Return path of the module given a frame object from the call stack.

    Returned path is relative to parent_path when given,
    otherwise it is absolute path.
    """

    # First, try to find if the file name is in the frame.
    try:
        caller_file = eval('__file__', frame.f_globals, frame.f_locals)
        d = os.path.dirname(os.path.abspath(caller_file))
    except NameError:
        # __file__ is not defined, so let's try __name__. We try this second
        # because setuptools spoofs __name__ to be '__main__' even though
        # sys.modules['__main__'] might be something else, like easy_install(1).
        caller_name = eval('__name__', frame.f_globals, frame.f_locals)
        __import__(caller_name)
        mod = sys.modules[caller_name]
        if hasattr(mod, '__file__'):
            d = os.path.dirname(os.path.abspath(mod.__file__))
        else:
            # we're probably running setup.py as execfile("setup.py")
            # (likely we're building an egg)
            d = os.path.abspath('.')
            # hmm, should we use sys.argv[0] like in __builtin__ case?

    if parent_path is not None:
        d = rel_path(d, parent_path)

    return d or '.'