Day 4 python after-school learning exercises

1, while loop Input: 1234568910

2, find all the numbers from 1 to 100 and

3, the output of all the odd 1-100

4, the output of all even 1-100

5, find all the numbers and 1-2 + 3-4 + 5 ... 99

6, the user login (three chances to retry)