python 案例一（电话铺）

经过自己努力，做了一个简单的电话铺的录入和查询小程序，比较简单，喜欢的朋友可以练练手。

题目：

创建你自己的命令行 地址簿 程序。在这个程序中，你可以添加、修改、删除和搜索你的联系人（朋友、家人和同事等等）以及它们的信息（诸如电子邮件地址和/或电话号码）。这些详细信息应该被保存下来以便以后提取。

用到的知识点：

1. cPickle
2. 简单文件读写

代码：

# coding=utf-
'''姓名年龄email查询修改'''

import cPickle as p
import os

class person(object):
    '''人员详情'''
    def __init__(self, name=None, age=None, email=None):
        self.name = name
        self.age = age
        self.email = email

def show_all():
    '''打印所有人员'''
    persons = get_persons()
    if len(persons) > :
        for item in persons:
            print 'name: %s, age: %s, email: %s' % (item.name, item.age, item.email)
    else:
        print "There is no person"

def add_person(name, age, email):
    '''添加人员'''
    #判断是否为空
    list = get_persons()
    with file('persons','w') as f:
        list.append(person(name, age, email))
        p.dump(list,f)

def get_persons():
    '''获取人员列表'''
    if not os.path.exists('persons'):
        file('persons','w').close()
        return []
    with file('persons') as f:
        data = p.load(f)
        return data if data != None else []

def find_person(name):
    '''根据姓名打印信息'''
    persons = get_persons()
    for person in persons:
        if person.name == name:
            print 'name: %s, age:%s, email:%s' % (person.name,person.age,person.email)
            return
    print 'This no person named: name'

def del_person(name):
    '''根据姓名删除人员'''
    persons = get_persons()
    for person in persons:
        if person.name == name:
            persons.remove(person)
            with file('persons','w') as f:
                p.dump(persons,f)
            print 'delete success!'
            return
    print 'This no person named: name'

def main():
    '''显示欢迎语句'''
    hello = '''Welcome please input your purpose
     --> see all person's detail
     --> find person by name
     --> add person
     --> delete person
     --> exit '''
    while True:
        m = raw_input(hello + '\n->')
        #print m
        if m == '':
            name = raw_input("name: ")
            age = raw_input("age:")
            email = raw_input("email:")
            add_person(name, age, email)
            print "ok!"
        elif m == '':
            show_all()
        elif m == '':
            name = raw_input("Enter the person's name: ")
            find_person(name)
        elif m == '':
            name = raw_input("Enter the person's name: ")
            del_person(name)
        elif m == '':
            os.sys.exit()
if __name__ == '__main__':
    main()