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实例055：按位取反
2022-08-10 22:20:00 【懒笑翻】
题目：学习使用按位取反~。
程序分析：~0=1; ~1=0;
~X = -X-1
代码：
print(~18)
print(~~2)
print(~-18)
运行结果：
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