Basic Course of 3 python common entry procedures

1, the printout of 1 to 100

count = 1

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

 

2, printout 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, the printout 1 to 100 odd

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

 

4, the printed output even-numbered 1 to 100

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

 

5, computing 0 + 1-2 + 3-4 + ...... 99

 

6, the design program allows three retries landing