python基础-数据运算
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*按位取反运算规则(按位取反再加1) 详解http://blog.csdn.net/wenxinwukui234/article/details/42119265
![](https://images2017.cnblogs.com/blog/1232054/201709/1232054-20170905002943226-1566848956.png)
详细内容http://www.runoob.com/python/python-operators.html
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