python GUI打开文本文件代码

askopenfiles 打开文件，python 代码

from tkinter import *
from tkinter.filedialog import *

root=Tk();root.geometry(‘400x100’)

def test():
with askopenfile(title=“上传文件”,
initialdir=“d:”,filetypes=[(“文本文件”,".txt")]) as f:
show[“text”]=f.read()

Button(root,text=‘选择读取的文本文件’,command=test).pack()

show=Label(root,width=40,height=3,bg=‘green’)
show.pack()

root.mainloop()