validators.py 文件源码

def __call__(self, value):
        try:
            super(URLValidator, self).__call__(value)
        except ValidationError as e:
            # Trivial case failed. Try for possible IDN domain
            if value:
                value = text_type(value)
                scheme, netloc, path, query, fragment = urlsplit(value)
                try:
                    # IDN -> ACE
                    netloc = netloc.encode('idna').decode('ascii')
                except UnicodeError:  # invalid domain part
                    raise ValidationError(self.message.format(value),
                                          code=self.code)
                url = urlunsplit((scheme, netloc, path, query, fragment))
                return super(URLValidator, self).__call__(url)
            else:
                raise ValidationError(self.message.format(value),
                                      code=self.code)
        return value