python实现数据库的增删改查功能，图形化版本

import tkinter
from tkinter import *
import psycopg2
from tkinter import messagebox

#连接信息
t_conn={
  "dbname": "d1",
  "user": "u1",
  "password": "123qqq...A",
  "port": "15400",
  "host": "59.110.159.243"
}
try:
    conn=psycopg2.connect(**t_conn)
except psycopg2.Error as e:
    print("conn failed")
# def conn:
#     try:
#         conn=psycopg2.connect(**t_conn)
#         return conn
#     except exception as e:
#         print('连接失败')
currsor=conn.cursor()
#创建表
currsor.execute('''create table if not exists a2(id int,name varchar)''')

def insert_db():
    id=insert_id_Entery.get()
    if id=="":
        print("输入为空")
    else:
        print("插入的id:",id)
    name=insert_name_Entry.get()
    if name=="":
        print("name不能为空")
    else:
        print("插入中")
        print("插入id对应的name值是:",name)
    result=messagebox.askokcancel("确认","确认插入吗")
    if result:
        currsor.execute(f"insert into a2 (id,name) values ('{id}','{name}')")
        messagebox.showinfo("信息","插入完成")
        conn.commit()
        print("插入成功")
    else:
        messagebox.showinfo("信息","取消插入")
        conn.rollback()
def delete_db():
    id=delete_id_Entry.get()
    if id=="":
        print("输入为空")
    else:
        print("删除中")
        print("删除的id:",id)
    result=messagebox.askokcancel("确认","确认删除吗")
    if result:
        currsor.execute(f"delete from a2 where id='{id}'")
        messagebox.showinfo("信息","删除完成")
        conn.commit()
    else:
        messagebox.showinfo("信息","取消删除")
        conn.rollback()
def update_db():
    id=update_id_Entry.get()
    if id=="":
        print("id不能为空")
    else:
        print("更新的id行是:",id)
    name=update_name_Entry.get()
    if name=="":
        print("name不能为空")
    else:
        print("更新中")
        print("更新id对应的name值是:",name)
        print("更新完成")
    result=messagebox.askokcancel("确认","确认更新吗")
    if result:
        currsor.execute(f"update a2 set name='{name}' where id='{id}'")
        messagebox.showinfo("信息","更新完成")
        conn.commit()
    else:
        messagebox.showinfo("信息","取消更新")
        conn.rollback()
def select_db():
    currsor.execute("select * from a2")
    row=currsor.fetchall()
    if row==[]:
        print("数据表为空")
    else:
        for i in row:
            print(i)
#开窗口
win=tkinter.Tk()
win.title('数据库增删改查')

#增加
insert_id_label=tkinter.Label(win,text="添加id值:")
insert_id_Entery=tkinter.Entry(win)
insert_name_label=tkinter.Label(win,text="添加name值:")
insert_name_Entry=tkinter.Entry(win)
insert_button=Button(win,text='增加',command=insert_db)
insert_id_label.grid(row=0,column=0)
insert_name_label.grid(row=1,column=0)
insert_id_Entery.grid(row=0,column=1)
insert_name_Entry.grid(row=1,column=1)
insert_button.grid(row=2,column=0,columnspan=2)
#删除
delete_id_label=tkinter.Label(win,text="删除id值:")
delete_id_Entry=tkinter.Entry(win)
delete_button=Button(win,text='删除',command=delete_db)
delete_id_label.grid(row=3,column=0)
delete_id_Entry.grid(row=3,column=1)
delete_button.grid(row=4,column=0,columnspan=2)

#更新
update_id_label=tkinter.Label(win,text="更新的id:")
update_id_Entry=tkinter.Entry(win)
update_name_label=tkinter.Label(win,text="更新id的name为:")
update_name_Entry=tkinter.Entry(win)
update_button=Button(win,text='修改',command=update_db)
update_id_label.grid(row=5,column=0)
update_id_Entry.grid(row=5,column=1)
update_name_label.grid(row=6,column=0)
update_name_Entry.grid(row=6,column=1)
update_button.grid(row=7,column=0,columnspan=2)
#查询
select_button=Button(win,text='查询结果',command=select_db)
select_button.grid(row=8,column=0,columnspan=2)
win.mainloop()
#关闭连接
currsor.close()
conn.close()