遇到的一个小问题

许诺一号

>>> fruits = ['banana','apple','gress','orange']
>>> for each in fruits:
        if each == 'banana' or 'gress':
                print(each + ' You really like this!')
        else:
                print(each + " I don't like it!")

               
banana You really like this!
apple You really like this!
gress You really like this!
orange You really like this!

为啥else没发挥作用啊？

塔利班

each == 'banana' or 'gress':
改为each == 'banana' or each == 'gress':
python不理解你说的话，虽然你选的是别的，
但是or后边的变量不为0，或起来还是满足if条件
你的==在or前面已经结束了

yjsx86

each == 'banana' or 'gress' 并不等于 each == 'banana' or each == 'gress'
把 each == 'banana' or 'gress' 从or分成2部分(each == 'banana') or ('gress')
(each == 'banana')这里是需要程序去判断真假的 ('gress') 这里永远为真 ('')这样的为假
所以 each == 'banana' or 'gress' 等同于 (真或假) or 真
显然 if (真或假) or 真: 永远判断条件成立

BngThea

‘gress’是一个字符常量，永远为True