Python循环_for&while

Posted 2021-11-12 iamjames

格式：for x in xs[‘James‘,‘Lily‘,‘Candy‘]:

                print(x)

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for循环就是把每个元素代入变量x,执行for循环里面的代码

1 # -*- coding: utf-8 -*-
2 sum = 0
3 for x in range(101):
4     sum = sum + x
5 print(sum)

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while循环，满足条件，就循环，不满足即退出

1 # -*- coding: utf-8 -*-
2 sum = 0
3 t_times = 100
4 while t_times >0 :
5     sum = sum + t_times
6     t_times =t_times -1
7 print(sum)

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break语句，跳出循环，可以设定跳出条件

1 sum = 0
2 for x in range(10):
3     sum = sum + x
4     if sum >= 10:
5         break
6 print(sum)

continue语句，路过当前循环（continue以下的代码均不执行），例（计算1-100的单数相加的和）：

 1 #! -*-coding:utf-8 -*-
 2 
 3 def sum_of_odd():
 4     total = 0
 5     content = input("计算基数总和，请输入整数最大值：")
 6     if content.isdigit():
 7         t_times = int(content)
 8     else:
 9         print("请输入正确的类型！")
10         return sum_of_even()
11 
12     while t_times > 0:
13         if t_times % 2 == 0:
14             t_times = t_times - 1
15             continue
16         print("相加的基数为：" + str(t_times))
17         total = total + t_times
18         if t_times > 0:
19             t_times = t_times - 1
20         else:
21             pass
22     print("在此范围内的基数相加和为：" + str(total))
23 
24 sum_of_odd()