练习4

1. 猜数字

#!/usr/bin/env python

#coding:utf-8

import random

num = random.randint(0,9)

while True:

    user_num = raw_input("please input a num: ")

    user_num = int(user_num)

    if user_num == num:

        print ‘success‘

        for i in range(1,8):

            print ‘*‘*i

        break

    else:

        print ‘error‘

2.创建文件夹

#!/usr/bin/env python

#coding:utf-8

import os

depts = [‘销售部‘,‘人事部‘,‘技术部‘]

for dept in depts:

    try:

        os.mkdir(dept)

    except OSError as e:

        print ‘文件[%s]已经存在,因为 [%s]‘ % (dept,e.strerror)

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练习4

原文：http://liang1026.blog.51cto.com/10119067/1681677