human
Solve the following python programming problem given the following code:
def bind_processor(self, dialect) : 
    string_process = self._str_impl.bind_processor (self) 
    json_serializer = (dialect._json_serializer or json.dumps) 
    def process(value) : 
        if (value is self.NULL) : 
            value = None 
else : 
            if (isinstance (value, elements.Null) or ((value is None) and self.none_as_null)) : 
                return None 
serialized = json_serializer (value) 
        if string_process : 
            serialized = string_process (serialized) 
return serialized 
return process 

    
    

    Fix the buggy line: string_process = self._str_impl.bind_processor (self)
assistant
#Here is Python program to fix the buggy line: string_process = self.

string_process = self._str_impl.bind_processor (dialect)