3 python基础教程之常用入门程序

1，打印输出 1～100

count = 1

while count < 101:
    print(count)
    count += 1

2，打印输出1+2+3……+100

1 count = 1
2 sum = 0
3 while count < 101:
4     sum = sum + count   
5     count += 1
6 print(sum)

3，打印输出1～100中的奇数

1 count = 1
2 while count < 101:
3     if count % 2 == 1:
4         print(count)
5     else:
6         pass
7     count += 1

4，打印输出1～100中的偶数

1 count = 0
2 while count < 101:
3     if count % 2 == 0:
4         print(count)
5     else:
6         pass
7     count += 1

5，计算0+1-2+3-4……+99

6，设计程序允许重试三次登陆