for loop

1. 流程圖
   
   
   
   
2. 語法

   for iterating_var in sequence:
   	statement(s)
   

3. 範例：列出前二位及後兩位球員。

   [dywang@deyu zzz]$ cat loop2.py 
   #!/usr/bin/env python3
   # coding: utf-8
   
   players = ['dywang', 'david', 'linda', 'peter', 'rita']
   print("top 2 players")
   for player in players[:2]: print(player)
   print("last 2 players")
   for player in players[-2:]: print(player)
   

4. 執行結果。

   [dywang@deyu zzz]$ ./loop2.py 
   top 2 players
   dywang
   david
   last 2 players
   peter
   rita