validators.py 文件源码

def __call__(self, value):
        try:
            if isinstance(value, decimal.Decimal):
                v = value
            else:
                v = decimal.Decimal(str(value).replace(self.dot, '.'))
            if ((self.minimum is None or v >= self.minimum) and
                    (self.maximum is None or v <= self.maximum)):
                return (v, None)
        except (ValueError, TypeError, decimal.InvalidOperation):
            pass
        return (value, self.error_message)