Python 如何将此数据帧更改为sqlite数据库？

如何将此数据帧更改为sqlite数据库？

import tkinter as Applicationform
import pandas as pd



#For Saving the Users Database in Pandas DataFrame
def saveinfo():
   val1 = entry1.get()
   val2 = entry2.get()
   data.append([val1, val2])
print(data)
df = pd.DataFrame(data,columns=['Name','Domain'])
df.to_excel("DataBase.xlsx")




def opennewwindow():
  global entry1
  global entry2




  window.destroy()

 newwindow = Applicationform.Tk()
 newwindow.geometry("350x250")
 newwindow.title('Application form')



 Applicationform.Label(newwindow, text="Name ").grid(column=0, row=1)
 entry1 = Applicationform.Entry(newwindow)
 entry1.grid(column=1, row=1)

 Applicationform.Label(newwindow, text="Domain " ).grid(column=0, row=4)
 entry2 = Applicationform.Entry(newwindow)
 entry2.grid(column=1, row=4)



Applicationform.Button(newwindow,text="Submit",command=saveinfo).grid(column=1,row=22)

newwindow.mainloop()


df = pd.DataFrame
data = []

window = Applicationform.Tk()
window.geometry("350x250")

window.title('Apply for Any Internships and Training')
lbl=Applicationform.Label(window,text="CONSOLELANCER",fg='blue', font=("Seroge UI", 16))
lbl.place(x=90, y=2)
btn=Applicationform.Button(window,text="Click Here To Apply",command=opennewwindow)
btn.place(x=110, y=100)



window.mainloop()

如何将Dataframe更改为python sqlite作为数据库来存储用户接收的输入

请帮我解这个密码

我试过了，但是我犯了很多次错误 应连接python tkinter和Sqlite数据库