Python-сообщество

 import tkinter as tk
from tkinter import ttk
import sqlite3
class Main(tk.Frame):
    def __init__(self, root):
        super().__init__(root)
        self.init_main()
        self.db = db
        self.view_records()
    def init_main(self):
        toolbar=tk.Frame(bg='#d7d8e0', bd=2)
        toolbar.pack(side=tk.TOP, fill=tk.X)
        self.add_img = tk.PhotoImage(file='add.gif')
        btn_open_dialog = tk.Button(toolbar, text='Добавить позцию', command=self.open_dialog, bg='#d7d8e0', bd=0, compound =tk.TOP, image=self.add_img)
        btn_open_dialog.pack(side = tk.LEFT)
        self.tree = ttk.Treeview(self, columns=('ID', 'description', 'costs', 'total'), height=15, show = 'headings')
        self.tree.column('ID', width = 30, anchor=tk.CENTER)
        self.tree.column('description', width=200, anchor=tk.CENTER)
        self.tree.column('costs', width=200, anchor=tk.CENTER)
        self.tree.column('total', width=80, anchor=tk.CENTER)
        self.tree.heading('ID', text='ID')
        self.tree.heading('description', text='Наименование')
        self.tree.heading('costs', text='Статья дохода/расхода')
        self.tree.heading('total', text='Сумма')
        self.tree.pack()
    def records(self, description, costs, total):
        self.db.insert_data(description, costs, total)
        self.view_records()
    def view_records(self):
        self.db.cursor.execute('''SELECT * FROM finance''')
        [self.tree.delete(i) for i in self.tree.get_children()]
        [self.tree.insert('', 'end', values=row) for row in self.db.cursor.fetchall()]
    def open_dialog(self):
        Child()
class Child(tk.Toplevel):
    def __init__(self):
        super().__init__(root)
        self.init_child()
        self.view = app
    def init_child(self):
        self.title('Добавить доходы\расходы')
        self.geometry('400x220+400+300')
        self.resizable(False, False)
        label_description = tk.Label(self, text='Наименование')
        label_description.place(x=50, y=50)
        label_selection = tk.Label(self, text='Статья доходы\расходы')
        label_selection.place(x=50, y=80)
        label_sum = tk.Label(self, text='Сумма')
        label_sum.place(x=50, y=110)
        self.entry_description = ttk.Entry(self)
        self.entry_description.place(x=200, y=50)
        self.entry_money = ttk.Entry(self)
        self.entry_money.place(x = 200, y=110)
        self.combobox=ttk.Combobox(self, values=[u'Доход', u'Расход'])
        self.combobox.current(0)
        self.combobox.place(x=200, y=80)
        btn_cancel=ttk.Button(self, text='Закрыть', command=self.destroy)
        btn_cancel.place(x=300, y=170)
        btn_ok = ttk.Button(self, text='Добавить')
        btn_ok.place(x=220, y=170)
        btn_ok.bind('<Button-1>', lambda event: self.view.records(self.entry_description.get(),
                                                                  self.combobox.get(),
                                                                  self.entry_money.get()))
        self.grab_set()
        self.focus_set()
class DB:
    def __init__(self):
        self.conn=sqlite3.connect('finance.db')
        self.cursor=self.conn.cursor()
        self.cursor.execute('''CREATE TABLE IF NOT EXISTS finance (id integer primary key, description text, costs text, total real )''')
        self.conn.commit()
    def insert_data(self, description, costs, total):
        self.cursor.execute('''INSERT INTO finance(description, costs, total) VALUES (?, ?, ?,)''', (description, costs, total))
        self.conn.commit()
if __name__=="__main__":
    root = tk.Tk()
    db = DB()
    app = Main(root)
    app.pack()
    root.title("Household finance")
    root.geometry("650x450+300+200")
    root.resizable(False, False)
    root.mainloop()

 C:\BaseData\Scripts\python.exe C:/Users/mikki/PycharmProjects/BaseData/MainWindow.py
Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Users\mikki\AppData\Local\Programs\Python\Python39\lib\tkinter\__init__.py", line 1885, in __call__
    return self.func(*args)
  File "C:\Users\mikki\PycharmProjects\BaseData\MainWindow.py", line 64, in <lambda>
    btn_ok.bind('<Button-1>', lambda event: self.view.records(self.entry_description.get(),
  File "C:\Users\mikki\PycharmProjects\BaseData\MainWindow.py", line 29, in records
    self.db.insert_data(description, costs, total)
  File "C:\Users\mikki\PycharmProjects\BaseData\MainWindow.py", line 76, in insert_data
    self.cursor.execute('''INSERT INTO finance (description, costs, total) VALUES (?, ?, ?,)''', (description, costs, total))
sqlite3.OperationalError: near ")": syntax error
Process finished with exit code 0