操作符 #

print(3 + 2 < 5 - 7)  # False
x = 10
x += 1
print(x)  # 11

print(2 ** 3)  # 8
print(9 / 3)  # 3.0
print(9 // 3)  # 3

print(True and 1 == 2)  # False
print(True or 1 == 2)  # True
print(not (True))  # False
print(not (1 == 1))  # False
print(3 < 4 < 5)