逻辑运算tip

while else

当while循环被break打断，就不会执行else结果

 

逻辑运算

优先级

() > not > and > or

print(2 > 1 and 1 < 4 or 2 < 3 and 9 > 6 or 2 < 4 and 3 < 2)

返回 True

 

print(0 or 4 and 3 or 2)

返回3

 

print (1 < 2 and 3 or 4 and 3 < 2)

返回3

 

print (1 > 2 and 3 or 4 and 3 < 2)

返回False