《python密碼學編程》筆記

字符串拼接python >>> 'Hello' 'Hello' >>> 'World' 'World' >>> 'Hello' + 'World' 'HelloWorld' >>> 2 + 4 6 >>> 'Hello' + 42 Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeErro

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