Home > Backend Development > Python Tutorial > python基础教程之常用运算符

python基础教程之常用运算符

WBOY
Release: 2016-06-16 08:42:25
Original
1112 people have browsed it

Python的运算符和其他语言类似

(我们暂时只了解这些运算符的基本用法,方便我们展开后面的内容,高级应用暂时不介绍)

数学运算

复制代码 代码如下:

>>>print 1+9        # 加法

>>>print 1.3-4      # 减法

>>>print 3*5        # 乘法

>>>print 4.5/1.5    # 除法

>>>print 3**2       # 乘方    

>>>print 10%3       # 求余数


判断

判断是真还是假,返回True/False

复制代码 代码如下:

>>>print 5==6               # =, 相等

>>>print 8.0!=8.0           # !=, 不等

>>>print 3

>>>print 4>5, 4>=0          # >, 大于; >=, 大于等于

>>>print 5 in [1,3,5]       # 5是list [1,3,5]的一个元素


 (还有is, is not等, 暂时不深入)

逻辑运算

True/False之间的运算

复制代码 代码如下:

>>>print True and True, True and False      # and, “与”运算, 两者都为真才是真

>>>print True or False                      # or, "或"运算, 其中之一为真即为真

>>>print not True                           # not, “非”运算, 取反


可以和上一部分结合做一些练习,比如:
复制代码 代码如下:

>>>print 5==6 or 3>=3

总结

数学 +, -, *, /, **, %

判断 ==, !=, >, >=,

逻辑 and, or, not

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template