Python学员管理系统 实现增删改查

#!/usr/bin/python
# coding=utf-8
studict = {}


def addfunc():
    while 1:
        keynum = raw_input('number: ')
        if keynum.isdigit():
            break
        print 'number error,reinput'
    name = raw_input('name: ')
    sex = raw_input('sex: ')
    old = raw_input('old: ')
    addr = raw_input('addr: ')
    QQ = raw_input('QQ: ')
    studict[keynum] = (name, sex, old, addr, QQ)
    print 'add success'
    return studict


def readfunc():
    keynum = raw_input('read number: ')
    if keynum not in studict:
        print '%s not exist' % keynum
    else:
        print'姓名:%s 性别:%s 年龄:%s 所在地:%s QQ号:%s' % studict[keynum]
    return studict


def deletefunc():
    keynum = raw_input('delte number: ')
    if keynum not in studict:
        print '%s not exist' % keynum
    else:
        print 'Are you sure？y/n'
        yesorno = raw_input()
        if yesorno == 'y':
            studict.pop(keynum)
            print 'delete %s success' % keynum
    return studict


def updatefunc():
    keynum = raw_input('update number: ')
    if keynum not in studict:
        print '%s not exist' % keynum
        return
    name = raw_input('name: ')
    sex = raw_input('sex: ')
    old = raw_input('old: ')
    addr = raw_input('addr: ')
    QQ = raw_input('QQ: ')
    studict[keynum] = (name, sex, old, addr, QQ)
    print '%s update success' % keynum
    return studict

while 1:
    print 'your operation is:add,read,delete,update'
    choice = raw_input('choice operatione: ')
    if choice == 'add':
        addfunc()
    elif choice == 'read':
        readfunc()
    elif choice == 'delete':
        deletefunc()
    elif choice == 'update':
        updatefunc()