Is there a more readable or Pythonic way to format a Decimal to 2 places?

有更具可读性或十进制格式神谕的方法2的地方吗？

youdao

The difference is approximately 2 quadrillionths (sixteen decimal places), and is therefore too small to be shown.

差异大约是两千万亿分之一（十六位小数），太小而无法显示。

youdao

For each case, print the operation result. The result should be rounded to 2 decimal places If and only if it is not an integer.

对于每一个测试用例，输出结果。（小数***）结果应四舍五入小数点后2位（当且仅当它不是一个整数------注意：如果结果不是小数就不要精确）。

youdao