while循环:
while True:
while 条件1 : else: 输出
if 条件1 : elif 条件2: else:
-------------------------------------------------
while.py
count = 0
while True:
print("count:",count)
count = count + 1 # count +=1
if count == 1000:
break
---------------------------------
![](https://images2017.cnblogs.com/blog/1258269/201710/1258269-20171018112850927-914952979.png)