(self)
return self.default_source is not None
Check whether the customer has a valid payment source.
Check whether the customer has a valid payment source.
Check whether the customer has a valid payment source .
def has_valid_source(self):
        """Check whether the customer has a valid payment source."""
        return self.default_source is not None
def has_valid_source ( self ) : return self . default_source is not None