def __init__(self, key=None, sep=':', salt=None):
        # Use of native strings in all versions of Python
        self.sep = str(sep)
        self.key = str(key or settings.SECRET_KEY)
        self.salt = str(salt or
            '%s.%s' % (self.__class__.__module__, self.__class__.__name__))
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/core/signing.py/Signer.__init__/original