优先级：() > not > and > or
练习题
3>4 or 4<3 and 1==1 #f 1 < 2 and 3 < 4 or 1>2 #ture 2 > 1 and 3 < 4 or 4 > 5 and 2 < 1 #ture 1 > 2 and 3 < 4 or 4 > 5 and 2 > 1 or 9 < 8 #f 1 > 1 and 3 < 4 or 4 > 5 and 2 > 1 and 9 > 8 or 7 < 6 #f not 2 > 1 and 3 < 4 or 4 > 5 and 2 > 1 and 9 > 8 or 7 < 6 #f
原文：https://www.cnblogs.com/csxy-py/p/9388010.html