016 花式赋值
1.交叉赋值
1.交叉赋值(解压缩)
height_of_nick,height_of_handsome,heigh_of_yongjiu=180,160,170
2.例题:保证内存地址不变的情况下修改x和y
(1)中间变量的思想:
x = 100
y = 200
print('x:',id(x)) # x: 1447156481392
print('y:',id(y)) # y: 1447039250128
z = x
x = y
y = z
print('x:',id(x)) # x: 1447039250128
print('y:',id(y)) # y: 1447156481392
(2)交叉赋值
x,y = y,x
print('y:',id(y)) # 内存地址相同,值一定相同
print('x:',id(x))
2.链式赋值
1.值相同的时候才可以使用链式赋值
a = 10
b = 10
c = 10
print(f'a:{a}, b:{b}, c:{c}, d:{d}')
a=b=c=10
print(a,b,c)