convert.py 文件源码

def base64unpickle(value, unsafe=False):
    """
    Decodes value from Base64 to plain format and deserializes (with pickle) its content

    >>> base64unpickle('gAJVBmZvb2JhcnEBLg==')
    'foobar'
    """

    retVal = None

    def _(self):
        if len(self.stack) > 1:
            func = self.stack[-2]
            if func not in PICKLE_REDUCE_WHITELIST:
                raise Exception, "abusing reduce() is bad, Mkay!"
        self.load_reduce()

    def loads(str):
        f = StringIO.StringIO(str)
        if unsafe:
            unpickler = picklePy.Unpickler(f)
            unpickler.dispatch[picklePy.REDUCE] = _
        else:
            unpickler = pickle.Unpickler(f)
        return unpickler.load()

    try:
        retVal = loads(base64decode(value))
    except TypeError: 
        retVal = loads(base64decode(bytes(value)))

    return retVal