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if both values of in a or expression are true ,Python will select the first one, and the second one in the and expression. for example:
result = (2 or 3) * (4 and 5)
print result
output 10
sirius的学习笔记（2）
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转载于:https://www.cnblogs.com/siriuswang/p/3681418.html
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