Python---逻辑运算符

由千峰教育笔记整理而成

and逻辑与   or逻辑或   not逻辑非

逻辑运算符的运算结果也是返回True   False

n1 = 8
n2 = 5
n3 = 3

result = n1 >= (n2 + n3) and n1 > n2
print(result)

分析True&True--->True

运行结果为True

#判断是否存在用户 or

username = ''
email = '63478364@qq.com'
result = username == 'admin123' or email == '63478364@qq.com'
print(result)

运行结果为True

flag = False
result = not flag  # not就是取反
print('not--->', result)