python里一些不常用的运算符号 |= &| //

a = {3, 3, 5, 88, 8, 90, 10}
b = {0, 8, 8, 8, 8, 8, 8,9,10}
b&=a
print(b)

 {8, 10}

a = {3, 3, 5, 88, 8, 90, 10}
b = {0, 8, 8, 8, 8, 8, 8,9,10}
# b&=a
b|=a
print(b)

 {0, 3, 5, 8, 9, 10, 88, 90}

c =8 // 5
print(c)

 1