1、[(x,y) for x in [1,2,3] for y in [4,2,3] if x == y]
(x,y):输出表达式,产生最终列表的元素
for x in [1,2,3] for y in [4,2,3]:输入列表
if x == y:可选的判断表达式
m = [(x,y) for x in [1,2,3] for y in [4,2,3] if x == y] print(m) 控制台输出:[(2, 2), (3, 3)]
1、[(x,y) for x in [1,2,3] for y in [4,2,3] if x == y]
(x,y):输出表达式,产生最终列表的元素
for x in [1,2,3] for y in [4,2,3]:输入列表
if x == y:可选的判断表达式
m = [(x,y) for x in [1,2,3] for y in [4,2,3] if x == y] print(m) 控制台输出:[(2, 2), (3, 3)]