流程控制之for循环

一、语法

举个例子

list = ['jiayi','wenbin','pengpeng','xioayu']
for i in list:
    print(i)

jiayi
wenbin
pengpeng
xioayu

m = 'jiayi'
for i in m :
    print(i)

j
i
a
y
i

打印0-9，当1 = 5 时直接跳出循环

for i in range(0,10):  # 0-9
    if i == 5:
        break   # 跳出循环
    print(i)

0
1
2
3
4
5

除了“5”不打印，打印0-9的其他数字

for i in range(0,10):
    if i == 5:
        continue   #跳出本次循环,进行下一轮循环
    print(i)

1
2
3
4
6
7
8
9

for i in range(0,10):
    if i == 5:
        break  #跳出循环
    print(i)
else:  #被break触发,直接停止运行
    print('hello,你居然运行到了else')

0
1
2
3
4


for i in range(0,10):
    if i == 11:
        break  #跳出循环
    print(i)
else:  # 没有被break会触发
    print('hello,你居然运行到了else')

0
1
2
3
4
5
6
7
8
9
hello,你居然运行到了else

用Jupyter进行打印

import time
print('Loading',end='')
for i in range(6):
    print('.',end='')  # end=''取消换行符，中间以空格隔开
    time.sleep(0.5)    #停0.5秒打印一个"."

Loading......

while:

for: