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TypeError: ufunc ‘bitwise_and‘ not supported for the input types, and the inputs could not be safely
2022-07-28 03:22:00 【蓝多多的小仓库】
代码报错：
TypeError: ufunc 'bitwise_and' not supported for the input types, and the inputs could not be safely coerced to any supported types according to the casting rule ''safe''
解决方案：
if语句中&连接符前后的两个条件需用括号括起来。
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