tkinter无法从入口值获取数据

Question

从文件window.py通过tambah_update_button添加数据时遇到问题，当我单击"Tambah atau Update"按钮时，我没有从self.id_text获取值ID，请说明原因？

但是如果我在insertData.py文件中调用Window类，例如Window()，则程序可以从self.id_text.get()中获取值

文件window.py

import tkinter as tk
import insertData

root = tk.Tk()

tambah_update_button = tk.Button(root, text="Insert or Update", command=insertData.Window)
tambah_update_button.pack()

root.mainloop()

文件insertData.py

import mysql.connector
import tkinter as tk
import cv2 as cv


class Data:
    def __init__(self):
        self.conn = mysql.connector.connect(host="localhost", user="root", passwd="", database="facebase")
        self.cursor = self.conn.cursor()
        self.conn.commit()

    def insertOrUpdate(self, Id, Nama, Nim, Jurusan):
        query = "SELECT * FROM mhs WHERE id='%s'" % (Id)
        self.cursor.execute(query)
        print(query)
        isRecordExist = 0
        for row in self.cursor:
            isRecordExist = 1
        if (isRecordExist == 1):
            query = "UPDATE mhs SET nama='%s', nim='%s', jurusan='%s' WHERE id='%s'" % (Nama, Nim, Jurusan, Id)
        else:
            query = "INSERT INTO mhs (id,nama,nim,jurusan) VALUES ('%s','%s','%s','%s')" % (Id, Nama, Nim, Jurusan)
        self.cursor.execute(query)
        self.conn.commit()

db = Data()

class Window:
    def __init__(self):
        self.window = tk.Tk()
        self.window.title('Tambah Data')

        self.l1 = tk.Label(self.window, text="ID")
        self.l1.config(width=10)
        self.l1.grid(row=0, column=0)

        self.l2 = tk.Label(self.window, text="Nama")
        self.l2.config(width=10)
        self.l2.grid(row=1, column=0)

        self.l3 = tk.Label(self.window, text="Nim")
        self.l3.config(width=10)
        self.l3.grid(row=2, column=0)

        self.l4 = tk.Label(self.window, text="Jurusan")
        self.l4.config(width=10)
        self.l4.grid(row=3, column=0)

        self.id_text = tk.StringVar()
        self.e1 = tk.Entry(self.window, textvariable=self.id_text)
        self.e1.config(width=30)
        self.e1.grid(row=0, column=1)

        self.nama_text = tk.StringVar()
        self.e2 = tk.Entry(self.window, textvariable=self.nama_text)
        self.e2.config(width=30)
        self.e2.grid(row=1, column=1)

        self.nim_text = tk.StringVar()
        self.e3 = tk.Entry(self.window, textvariable=self.nim_text)
        self.e3.config(width=30)
        self.e3.grid(row=2, column=1)

        self.jurusan_text = tk.StringVar()
        self.e4 = tk.Entry(self.window, textvariable=self.jurusan_text)
        self.e4.config(width=30)
        self.e4.grid(row=3, column=1)

        self.b1 = tk.Button(self.window, text="Tambah atau Update", command=self.tambah_update_command)
        self.b1.grid(row=4, columnspan=2)

        self.window.mainloop()

    def dataSet(self):
        wajah = cv.CascadeClassifier('classifiers/face-detect.xml')
        cam = cv.VideoCapture(0)


        id = str(self.id_text.get())
        # nama = str(self.nama_text.get())
        sampleNum = 0

        while True:
            _, img = cam.read()
            gray = cv.cvtColor(img, cv.COLOR_BGR2GRAY)
            wajahs = wajah.detectMultiScale(gray, 1.3, 5)
            for (x, y, w, h) in wajahs:
                sampleNum = sampleNum + 1
                cv.imwrite("dataSet/User." + str(id) + "." + str(sampleNum) + ".jpg",
                           cv.resize(gray[y:y + h, x:x + w], (200, 200)))
                cv.rectangle(img, (x, y), (x + w, y + h), (0, 255, 0), 2)
            cv.imshow('DataSet', img)
            # cv.imshow('Gray', gray)
            cv.waitKey(1)
            if (sampleNum >= 20):
                break
        cam.release()
        cv.destroyAllWindows()

    def tambah_update_command(self):
        db.insertOrUpdate(self.id_text.get(), self.nama_text.get(), self.nim_text.get(), self.jurusan_text.get())
        self.window.destroy()
        self.dataSet()

这是我得到的错误：

Exception in Tkinter callback
SELECT * FROM mhs WHERE id=''
Traceback (most recent call last):
  File "D:\Program\Python36\lib\site-packages\mysql\connector\connection_cext.py", line 395, in cmd_query
    raw_as_string=raw_as_string)
_mysql_connector.MySQLInterfaceError: Incorrect integer value: '' for column 'id' at row 1

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "D:\Program\Python36\lib\tkinter\__init__.py", line 1699, in __call__
    return self.func(*args)
  File "D:\py\skripsi\insertData.py", line 102, in tambah_update_command
    db.insertOrUpdate(self.id_text.get(), self.nama_text.get(), self.nim_text.get(), self.jurusan_text.get())
  File "D:\py\skripsi\insertData.py", line 23, in insertOrUpdate
    self.cursor.execute(query)
  File "D:\Program\Python36\lib\site-packages\mysql\connector\cursor_cext.py", line 266, in execute
    raw_as_string=self._raw_as_string)
  File "D:\Program\Python36\lib\site-packages\mysql\connector\connection_cext.py", line 398, in cmd_query
    sqlstate=exc.sqlstate)
mysql.connector.errors.DatabaseError: 1366 (HY000): Incorrect integer value: '' for column 'id' at row 1