min() # 返回最大值 max() # 返回最小值 max(...) max(iterable, *[, default=obj, key=func]) -> value max(arg1, arg2, *args, *[, key=func]) -> value
With a single iterable argument, return its biggest item. The default keyword-only argument specifies an object to returnif the provided iterable is empty. With two or more arguments, return the largest argument.
# 保留小数位方法 round(number, ndigits=None) Round a number to a given precision in decimal digits.