while语句和if语句 的 用法 及 代码

本文地址 : http://blog.csdn.net/caroline_wendy/article/details/17199771

Python中while也包含else, 循环结束之后执行;if, elif, else, 构成了判别功能; 

条件判断, 结束之后添加":"; 注意使用正确的缩进;True和False首字母大写;

代码:

# -*- coding: utf-8 -*-  #==================== #File: abop.py #Author: Wendy #Date: 2013-12-03 #====================  #eclipse pydev, python3.3  name = 'Wendy' running = True #true首字母大写  print('Who is the author?')  while running :      guess = str(input("Enter an name : "))          if guess == name :          print('Congratulation, you guessed it! ')         running = False     elif guess[0] != 'W': #elif的写法         print("Sorry, my first letter is 'W'. ")     else :         print("Please, continue to guess. ") else : #while语句的else     print('the while loop is over.')      print('done')

Who is the author? Enter an name : Caroline Sorry, my first letter is 'W'.  Enter an name : Wenny Please, continue to guess.  Enter an name : Wendy Congratulation, you guessed it!  the while loop is over. done