handlers.py 文件源码

def guess_app_stacklevel(start=1):
    """
    try to guess stacklevel for application warning.
    looks for first frame not part of passlib.
    """
    frame = inspect.currentframe()
    count = -start
    try:
        while frame:
            name = frame.f_globals.get('__name__', "")
            if name.startswith("passlib.tests.") or not name.startswith("passlib."):
                return max(1, count)
            count += 1
            frame = frame.f_back
        return start
    finally:
        del frame