types.py 文件源码

def convert(self, value):
        if isinstance(value, str):
            lst = self.type(value.strip() for value in value.split(','))
        elif isinstance(value, abc.Iterable):
            lst = self.type(value)
        else:
            raise ValueError('Not a {}'.format(self.typename))

        # Resolve aliases
        return [self.resolve_alias(item) for item in lst]