def _checkType(self, obj, identifier):
        """Assert that an object is of type str."""
        if not isinstance(obj, basestring):
            raise TypeError("expected %s '%s' to be a string (was '%s')" %
                            (identifier, obj, type(obj).__name__))
def _checkType ( self , obj , identifier ) : if not isinstance ( obj , basestring ) : raise TypeError ( "expected %s '%s' to be a string (was '%s')" % ( identifier , obj , type ( obj ) . __name__ ) )
Assert that an object is of type str.