Python学习--控制语句：if, while, for, break, continue

#!/usr/bin/python
# -*- coding: utf-8 -*-
# Filename ifAndWhile.py
# 猜数字游戏，演示if和while的用法

result = 18
running = True

while running:
 guess = int(raw_input('输入一个数字：'))
 
 if guess == result:
  print '恭喜，你猜对了！'
  running = False
 elif guess < result:
  print '太小了！'
 elif guess > result:
  print '太大了！'
 else:
  print '未知错误！'

print '游戏结束！'

#!/usr/bin/python
# -*- coding: utf-8 -*-
# Filename: for.py
# 计算1到10的和，演示for的用法

result = 0

for i in range(1, 11):
 result = result + i

print result

# 计算1到10中奇数的和

result = 0

for i in range(1, 11, 2):
 result = result +i

print result

#!/usr/bin/python
# -*- coding: utf-8 -*-
# Filename breakContinue.py
# break和continue的用法

while True:
 s = raw_input('输入一个字符串：')
 if s == 'quit':
  break
 elif len(s) < 4:
  print '输入的字符从太短！'
  continue
 else:
  print '你说：', s