说实话，第一次写这么长的Python代码，期间遇到了很多问题，但是，最终还是完成了，花了我一天半的时间。
该程序实现了用户的增，删，改，查，主要用到sqlite3模块。对于该模块的知识点，请查看我的另一篇文章SQLite-Python
如有更好的建议，请私信，本人将不胜荣幸，让我们一起来学习Python！
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#-*- coding:utf-8 -*-import sqlite3#打开本地数据库用于存储用户信息conn = sqlite3.connect('mysql_person.db')#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conn.execute('''CREATE TABLE MT (ID INT PRIMARY KEY NOT NULL, NAME TEXT NOT NULL, AGE INT NOT NULL, ADDRESS CHAR(50), SALARY REAL);''')print "Table created successfully";conn.close()#增加用户信息def insert(): ID = input('请输入用户ID:\n') NAME = raw_input('请输入用户昵称:\n') AGE = input('请输入年龄:\n') ADDRESS = raw_input('请输入用户地址:\n') SALARY = input('请输入用户薪水:\n') sql1 = 'insert into MT(ID,NAME,AGE,ADDRESS,SALARY)' sql1 += 'values("%d","%s","%d","%s","%d");'%(ID,NAME,AGE,ADDRESS,SALARY) conn.execute(sql1) conn.commit() print "Records insert successfully"#删除用户信息def delete(): name = raw_input("请输入所要删除的联系人姓名:") cursor = conn.execute("SELECT name from MT where name = '%s';"%name) for row in cursor: if name == row[0]: conn.execute("DELETE from MT where name = '%s';"%name) conn.commit() print "Records delete successfully" break else: print "sorry,不存在该用户"#修改用户信息def modify(): name = raw_input("请输入要修改用户的姓名:") print search() sql4 = "SELECT id, name, age,address, salary from MT where name = '%s';"%name cursor = conn.execute(sql4) x = raw_input("请输入要修改用户的新地址:") y = input("请输入要修改用户的新年龄:") z = input("请输入要修改用户的新薪水:") sql3 = "UPDATE MT set address = '%s',age = '%d',\ salary = '%d' where name = '%s';"%(x,y,z,name) conn.execute(sql3) conn.commit() print "修改成功" sql5 = "SELECT id, name, age,address, salary from MT where name = '%s';"%name cursor = conn.execute(sql5) for row in cursor: print "ID = ", row[0] print "NAME = ", row[1] print "AGE = ",row[2] print "ADDRESS = ", row[3] print "SALARY = ", row[4], "\n"#查询用户信息conn = sqlite3.connect('mysql_person.db')def search(): conn = sqlite3.connect('mysql_person.db') name = raw_input('请输入要查询的用户姓名') sql2 = "SELECT id,name,age, address, salary from MT where name= '%s';" % (name) cursor = conn.execute(sql2) for row in cursor: print "ID = ", row[0] print "NAME = ", row[1] print "AGE = ",row[2] print "ADDRESS = ", row[3] print "SALARY = ", row[4], "\n" break else: print "sorry,没有该用户信息"#显示所有用户信息def showall(): cursor = conn.execute("SELECT id, age, name, address, salary from MT") for row in cursor: print "ID = ", row[0] print "NAME = ", row[1] print "AGE = ",row[2] print "ADDRESS = ", row[3] print "SALARY = ", row[4], "\n" print "Operation done successfully"; cursor = conn.execute("select count(*) from MT;") for row in cursor: print "一共有%d个用户"%row[0]def menu(): print '1.新增联系人' print '2.删除联系人' print '3.修改联系人' print '4.查询联系人' print '5.显示所有联系人' print '6.退出程序' print 'What do you want to do?'while True: menu() x = raw_input('请输入您的选择菜单号:') if x == '1': insert() continue if x == '2': delete() continue if x == '3': modify() continue if x == '4': search() continue if x == '5': showall() continue if x == '6': print "谢谢使用！" exit() continue else: print "输入的选项不存在，请重新输入！" continue |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://blog.csdn.net/MTbaby/article/details/58599864
