for循环

for循环可以多个值取值：

——3个、4个值时也可以同时取

l = [
     ['xiaohei', '123456'],
     ['xiaobai', '11111'],
     ['xiaoming', '1']
]
for k,y in l:
    print(k,y)

结果：
     xiaohei 123456
     xiaobai 11111
     xiaoming 1

l = [
     ['xiaohei', '123456','110'],
     ['xiaobai', '11111','112'],
     ['xiaoming', '1','113']
]
for k,y,s in l:
    print(k,y,s)

结果：xiaohei 123456 110
        xiaobai 11111 112
        xiaoming 1 113