逻辑运算符

'''x or y x True，则返回x'''
print(1 or 2)  # 1
print(3 or 2)  # 3
print(0 or 2)  # 2
print(0 or 100)  # 100


print(2 or 100 or 3 or 4)  # 2

print(0 or 4 and 3 or 2)
'''x and y x True，则返回y'''
print(1 and 2)
print(0 and 2)
print(2 or 1 < 3)  # 2
print(3 > 1 or 2 and 2)  # true<br><br><br>
print(5 < 4 or 3)  #3
print(2 > 1 or 6) #true
print(3 > 1 and 0) #False

print( 0 and 3 > 1)  #0

总结：x or y x若为true,返回x
x and y x若为true,返回y