# and or not
# print(2>1 and 1<4)
# 优先级（2>1 and 1<4)
# print(2>1 and 1<4 or 2<3 and 9>6or 2<4 and 3<2)
#t or t or f
#t or f
#
# 3>4 or 4<3 and 1==1
# 1<2 and 3<4 or 1>2
# 2>1and 3<4 or 4>5 and 2<1
# 1>2 and 3<4 or 4>5 and 2>1 or 9<8
# 1>1 and 3<4 or 4>5 and 2>1 and 9>8 or 7<6
# # not 2>1 and 3<4 or 4>5 and 2>1 and 9>8 or 7<6
# ''' x or y x 为非零，则反馈X'''
# # int ___bool 非零转换成bool True 0 转换成bool 是False
# # print（1 or 2)#1
# ''' x and y x 为true，则返回 Y'''
# # # print(0 or 100) #2
# print (0 or 4 and 3 or 2) #3
# print(2 or 100 or 3 or 4)# 2
# print(2 or 1<3) #2
# print(1<3 or 2 and 2)
