原创：Python编写通讯录，支持模糊查询，利用数…

import sqlite3
import re
#打开本地数据库用于存储用户信息
conn = sqlite3.connect('mysql_telephone_book.db')
c = conn.cursor()
#在该数据库下创建表，创建表的这段代码在第一次执行后需要注释掉，否则再次执行程序会一直提示：该表已存在
'''c.execute("CREATE TABLE TA
       (ID INT PRIMARY KEY     NOT NULL,
       NAME           TEXT    NOT NULL,
       AGE            INT     NOT NULL,
       ADDRESS        CHAR(50),
       TELENUMBER         TEXT);")'''

conn.commit()#提交当前的事务
#增加用户信息
def insert():
    global conn
    c = conn.cursor()
    ID=int(input("请输入id号："))
    name=input("请输入姓名：")
    age=int(input("请输入年龄："))
    address=input("请输入地址：")
    telenumber=input("请输入电话号码:")
    sql1 = 'insert into TA(ID,NAME,AGE,ADDRESS,TELENUMBER)'
    sql1 += 'values("%d","%s","%d","%s","%s");' % (ID,name, age, address, telenumber)
    conn.execute(sql1)
    conn.commit()#提交，否则无法保存
    print("提交成功！！")
#删除用户信息
def delete():
    global conn
    c=conn.cursor()
    i = input("请输入所要删除的联系人姓名或电话号码:")
    if len(i) < 11:
        cursor = c.execute("SELECT name from TA where name = '%s';"%i)
        for row in cursor:
            if i == row[0]:
                c.execute("DELETE from TA where name ='%s';"%i)
                conn.commit()
                print("成功删除联系人信息！！")
                break
        else:
            print("该联系人不存在！！")
    else :
        cursor = c.execute("SELECT name from TA where telenumber= '%s';" % i)
        for row in cursor:
            if i == row[0]:
                c.execute("DELETE from TA where telenumber ='%s';" % i)
                conn.commit()
                print("成功删除联系人信息！！")
                break
        else:
            print("该电话号码错误！！")
#查询用户信息
def search():
    global conn
    c = conn.cursor()
    i = input("请输入所要查询的联系人姓名或电话号码:")
    if i.isnumeric():
        sql1 = "SELECT id,name,age, address, telenumber from TA where telenumber like '%" + i + "%'"
        cursor = c.execute(sql1)
        res=cursor.fetchall()
        if len(res)!=0:
            for row in res:
                print("id:{0}".format(row[0]))
                print("姓名:{0}".format(row[1]))
                print("年龄:{0}".format(row[2]))
                print("地址:{0}".format(row[3]))
                print("电话号码:{0}".format(row[4]))
        else:
            print("无此电话号码！！")
    else:
        sql1="SELECT id,name,age, address, telenumber from TA where name like '%"+i+"%'"
        cursor = c.execute(sql1)
        res=cursor.fetchall()
        if len(res) == 0:
            print("该联系人不存在！！")
        else:
            for row in res:
                print("id:{0}".format(row[0]))
                print("姓名:{0}".format(row[1]))
                print("年龄:{0}".format(row[2]))
                print("地址:{0}".format(row[3]))
                print("电话号码:{0}".format(row[4]))
#显示所有用户信息
def showall():
    global conn
    c = conn.cursor()
    cursor = c.execute("SELECT id, name, age, address, telenumber  from TA")
    for row in cursor:
        print("id:{0}".format(row[0]))
        print("姓名:{0}".format(row[1]))
        print("年龄:{0}".format(row[2]))
        print("地址:{0}".format(row[3]))
        print("电话号码:{0}".format(row[4]))
print("指令如下：\n1.输入\"add\"为通讯录添加联系人信息\n2.输入\"delete\"删除通讯录里的指定联系人信息 \n3.输入\"searchall\"查询通讯录里的所有用户 \n4.输入\"search\"根据姓名或手机号码查找信息 ")
while 1:
    temp = input("请输入指令：")
    if temp == "add":
        insert()
        print("添加成功！")
        temp1=input("是否继续操作通讯录？(y or n)")
        if temp1=="n":
            print("成功退出！！")
            break
        else:
            continue
    elif temp=="delete":
        delete()
        temp1 = input("是否继续操作通讯录？(y or n)")
        if temp1 == "n":
            print("成功退出！！")
            break
        else:
            continue
    elif temp=="searchall":
        showall()
        temp1 = input("是否想继续操作通讯录？(y or n)")
        if temp1 == "n":
            print("成功退出！！")
            break
        else:
            continue
    elif temp=="search":
        search()
        temp1 = input("您是否想继续操作通讯录？(y or n)")
        if temp1 == "n":
            print("成功退出！！")
            break
        else:
            continue
    else:
        print("请输入正确指令！！")
conn.close()#关闭数据库