Python中循环的使用

1.使用for in range

for x in range(2, 5):
print(x)

2.使用while 

n = 7
while n>0:
if n==3:
break;
print(n)
n=n-1;

n = 6
while n>0:
print(n)
n=n-1;

 3.利用循环生成列表

list = [6, 7, 8]
for x in list:
print(x)