injector.py 文件源码

def reraise(original, exception):
    prev_cls, prev, tb = sys.exc_info()
    frames = inspect.getinnerframes(tb)
    if len(frames) > 1:
        exception = original
    try:
        raise exception.with_traceback(tb)
    except AttributeError:
        # This syntax is not a valid Python 3 syntax so we have
        # to work around that
        exec('raise exception.__class__, exception, tb')