fields.py 文件源码

def to_python(self, value):

        if not value:
            return []

        if not isinstance(value, str):
            raise ValidationError(
                '%s is not a valid string value.' % str(value))

        result = [item.strip() for item in filterfalse(
            lambda item: item.strip() == '', value.split(self.delimiter))]
        return result