Python - 无法将文本框输入到 txt 文件

Question

我想从文本框获取输入到 txt 文件，但是当我打开 txt 文件时它是空的.. 有什么帮助吗？

labelv = ttk.Label(create, text="Version name")
textbox_v = Text(create, height=1, width=10)
labelc = ttk.Label(create, text="Changelog")
textbox_c = Text(create, height=5, width=50)
updateversion = open('update.upt', "w")
updateversion = open('update.txt', "w")
updateversion.write(textbox_v.get(1.0, END))
updateversion.write(textbox_c.get(2.0, END))
updateversion.close()
messagebox.showinfo('Create', 'Your update was created!')
labelv.pack()
textbox_v.pack()
labelc.pack()
textbox_c.pack()