第三次作业

while

index = 1#索引定义

while index <= 100:

print("hello,world!!")

index += 1

 

break

index = 1

while index <= 100:

if index == 50:

break

print(index)

index +=1

 

while    else

index = 1while index <= 100:

index +=1

if index == 50:

break

print(index)

else:

print(“简环正常结束了”)

 

循环

i=1

while i <= 7:print(f"今天是送花的第{i}天")

j=1

while j <= 10:

print(f"这是送的第j}朵")

j+=1

i =1

 

for

list_01 = [1,2314]

index =0

while index < len(list_01):

print(list_01[index])

index += 1

set_01 = (11213)

 for:选代容器中的每一个元素

for 临时变量”in 数据容器:代码块

 

range

range(start,end,step):生成一系列还续的整数

range(num):（0-num)range(start,end)