Comments (4)
leisurelicht
commented on September 7, 2024
第一个问题应该是由于 Python 从 3.7 开始不再使用 peephole optimization ， 而是使用新的 AST Optimizer 技术。
博客中的这个问题也是在Python3.6时代提出的，3.7 应该是也修改了实现方式。
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kangkang59812
commented on September 7, 2024
'wtf'的例子，这不是3个字符吗？为什么解释里说是 0个或1个才字符驻存？
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leisurelicht
commented on September 7, 2024
'wtf'的例子，这不是3个字符吗？为什么解释里说是 0个或1个才字符驻存？
不是长度为0或1的“才”驻留，而是长度为0或1的字符串“都”驻留。比如，如果长度大于1 的的字符串中如果包含！就不会被驻留，但是字符串是只有一个！的长度为1的字符串，就会被驻留。
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S-N-O-R-L-A-X
commented on September 7, 2024
a='wtf!' b='wtf!' print(a is b) c,d='wtf!','wtf!' print(c is d)
我得到的结果均为True（python3.9.6）
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