Python 中 % 的结果是什么? [英] What is the result of % in Python?

问题描述

计算中的 % 是什么?我似乎无法弄清楚它的作用.

What does the % in a calculation? I can't seem to work out what it does.

它是否计算出百分比的计算，例如:4 % 2 显然等于 0.如何?

Does it work out a percent of the calculation for example: 4 % 2 is apparently equal to 0. How?

推荐答案

%(模)运算符产生第一个参数除以第二个参数的余数.数字参数首先转换为通用类型.零右参数引发 ZeroDivisionError 异常.参数可以是浮点数，例如，3.14%0.7 等于 0.34(因为 3.14 等于 4*0.7 + 0.34.)模运算符总是产生与它的第二个操作数(或零)具有相同符号的结果；结果的绝对值严格小于第二个操作数[2]的绝对值.

The % (modulo) operator yields the remainder from the division of the first argument by the second. The numeric arguments are first converted to a common type. A zero right argument raises the ZeroDivisionError exception. The arguments may be floating point numbers, e.g., 3.14%0.7 equals 0.34 (since 3.14 equals 4*0.7 + 0.34.) The modulo operator always yields a result with the same sign as its second operand (or zero); the absolute value of the result is strictly smaller than the absolute value of the second operand [2].

取自 http://docs.python.org/reference/expressions.html

示例 1:6%2 计算结果为 0 因为如果 6 除以 2(3 次)，则没有余数.

Example 1: 6%2 evaluates to 0 because there's no remainder if 6 is divided by 2 ( 3 times ).

示例 2:7%2 的计算结果为 1，因为当 7 相除时，还有 1 的余数按 2(3 次).

Example 2: 7%2 evaluates to 1 because there's a remainder of 1 when 7 is divided by 2 ( 3 times ).

总而言之，它返回除法运算的余数，如果没有余数，则返回 0.所以 6%2 表示求 6 除以 2 的余数.

So to summarise that, it returns the remainder of a division operation, or 0 if there is no remainder. So 6%2 means find the remainder of 6 divided by 2.

这篇关于Python 中 % 的结果是什么?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！