链接 tkinter 和 sqlite3

Question

I'm a new python programmer and I as creating a phonebook app using tkinter and sqlite3 but I faced a problem. The app runs without problem but not inserting or deleting data although it prints (inserted successfully) and deleted successfully). Please for you kind assistance. The code is below and thanks in advance:

from tkinter import*
import tkinter as tk
from tkinter import ttk 
import sqlite3

class Phonebook2:   
def __init__(self, master):

    lblName = ttk.Label(top, text="Name:")
    lblName.grid(row = 0, column = 0, sticky=W)
    lblPhone = ttk.Label(top, text="Phone number:")
    lblPhone.grid(row=1, column=0, sticky=W)

    self.name= StringVar()
    self.txtName = Entry(top, textvariable=self.name)
    self.txtName.grid(row=0, column=1, padx=0, pady=0, sticky=EW, columnspan=19)

    self.num= IntVar()
    self.txtPhone = Entry(top, textvariable=self.num)
    self.txtPhone.grid(row=1, column=1, sticky=EW)


    btnAdd = ttk.Button(top, text="Add", command=self.insert)
    btnAdd.grid(row=0, column=20, sticky=EW, padx=2, pady=2)
    btnDelete = ttk.Button(top, text="Delete", command=self.delete)
    btnDelete.grid(row=1, column=20, sticky=EW, padx=2)
    btnClear = ttk.Button(top, text="Clear", command=self.clear)
    btnClear.grid(row=2, column=20, sticky=EW, padx=2)
    btnSearch = ttk.Button(top, text="Search")
    btnSearch.grid(row=3, column=20, sticky=EW, padx=2)
    btnExit = ttk.Button(top, text="Exit", command = exit)
    btnExit.grid(row=4, column=20)


def exit(self):
    top.destroy()


def insert(self):

    NM = self.txtName.get()
    PH = self.txtPhone.get()
    conn = sqlite3.connect ('Phonebook.db')
    print ("connection opened for insertion...")
    cursor = conn.cursor()
    cursor.execute ("""INSERT INTO Phonebook (NAME, PHONE_NUMBER) VALUES (?, ?)""", (NM, PH))
    conn.commit()
    conn.close()
    print ('Inserted successfully')


def delete(self):
    conn = sqlite3.connect('Phonebook.db')
    print ("Connection opened for deletion...")
    cursor = conn.cursor()
    cursor.execute ("DELETE FROM Phonebook")
    conn.commit()
    conn.close()
    print ("All records are deleted successfully...")


def clear(self):
    self.txtName.delete(0, END)
    self.txtPhone.delete(0, END)


top = Tk()
top.overrideredirect(True)
top.eval('tk::PlaceWindow . center')
top.title("PhoneBook2")
application = Phonebook2(top)

top.mainloop()

Answer 1

You could try to INSERT like this:

query = ("INSERT INTO Phonebook (NAME, PHONE_NUMBER)""VALUES (%s, %s)")
    data = (NM,PH)
    cursor.execute(query, data)
    connection.commit()

Be sure to get the correct names of columns "NAME" and "PHONE_NUMBER" in your sqlite

Answer 2

def del_something(): conn = sqlite3.connect("Phonebook.db") cur = conn.cursor() cur.execute("DELETE FROM phonebook WHERE oid = " + del_ent.get()) # <- change entry del_ent.delete(0, END) # clear entry conn.commit() conn.close()