python - 流程控制基础习题

Posted 2021-01-17 程序灬波

 #打印1 到100 的和**

     i = 0
     s = 0
     while i <100:
         i += 1
         s += i
     print(s)
     print(‘1+2+,,100=‘,s)


#打印字符A~Z

    for i in range(ord(‘A‘),ord(‘Z‘)):
    print(chr(i))


#将12345转换为54321

 

```
     #12345=>54321
     ret = 0
     a = 12345
     while a:
         last = a % 10
        ret = ret * 10 + last
         a = a // 10
     print(ret)

```


- 将12345转换为‘12345‘，不要使用str

```
a = 12345
ret = ‘‘
while a:
    #提取最后一个数字
    n = a % 10
    #转为对应的字符
    c = chr(n + ord(‘0‘))
    #拼接到ret最前面
    ret = c + ret
    #除10 为下次做准备
    a = a//10
print(ret)

```

**遍历列表，打印：我叫name，今年age岁，家住dizhi，电话phone**    

```
lt = [
    {‘name‘: ‘田馥甄‘, ‘age‘: ‘36‘, ‘info‘: [(‘phone‘, ‘1383838438‘), (‘address‘, ‘北京‘)]},
    {‘name‘: ‘柳岩‘, ‘age‘: ‘33‘, ‘info‘: [(‘phone‘, ‘139809808‘), (‘address‘, ‘河南郑州‘)]},
    {‘name‘: ‘林志玲‘, ‘age‘: ‘42‘, ‘info‘: [(‘phone‘, ‘13767655465‘), (‘address‘, ‘河北石家庄‘)]},
    {‘name‘: ‘柳慧芬‘, ‘age‘: ‘18‘, ‘info‘: [(‘phone‘, ‘13737623‘), (‘address‘, ‘山东济南‘)]},
]
for i in lt:
    print(‘我的名字是%s，我的年龄是%s,我的电话是%s，我的家住在%s‘ % (i[‘name‘], i[‘age‘], i[‘info‘][0][-1], i[‘info‘][-1][-1]))
```