如何將不同的單選按鈕鏈接到不同的文件夾

Question

我試圖將不同的單選按鈕鏈接到不同的文件夾。我設法打開一個文件夾，但現在所有的單選按鈕都鏈接到該文件夾​​。我明白，這是因爲他們有相同的使用第一個單選按鈕路徑的稱號，但我不知道如何改變它。我的問題是，如何將不同的單選按鈕鏈接到不同的文件夾？ 另外，如何在同一時間從1個文件夾打開多個文件？ 這裏是我的代碼：

from tkinter import* 
from tkinter import filedialog 
import tkinter.constants 

class filedialogexample(tkinter.Frame): 
    def __init__(self, root): 
     tkinter.Frame.__init__(self, root) 
     self.favorite = StringVar() 

     tkinter.Radiobutton(self, text = "Browse 1", variable = self.favorite, 
       command = self.askopenfilename 
       ).grid(row=2, column =0, columnspan = 2, sticky =W) 
     tkinter.Radiobutton(self, text = "Browse 2", variable = self.favorite, 
       command = self.askopenfilename 
       ).grid(row=3, column =0, columnspan = 2, sticky =W) 
     tkinter.Radiobutton(self, text = "Browse 3", variable = self.favorite, 
       command = self.askopenfilename 
       ).grid(row=4, column =0, columnspan = 2, sticky =W) 
     tkinter.Radiobutton(self, text = "Browse 4", variable = self.favorite, 
       command = self.askopenfilename 
       ).grid(row=5, column =0, columnspan = 2, sticky =W) 


     self.dir_opt = options = {} 
     options['initialdir'] = 'C:\\Users\\kom01\\Documents\\Python Scripts' 


    def askopenfilename(self): 
     filename = filedialog.askopenfilename(**self.dir_opt) 
     if filename: 
      return open(filename, 'r') 

    def askdirectory(self, root): 
     return filedialog.askdirectory(**self.dir_opt) 

if __name__=='__main__': 
    root = Tk() 
    filedialogexample(root).grid() 
    root.mainloop() 

在此先感謝您的幫助！

Answer 1

要根據選擇哪個單選按鈕來傳遞不同的initialdir到filedailog.askopenfilename，可以使用單選按鈕的值選項。由於您所有的單選按鈕都連接到self.favorite變量，因此self.favorite將包含所選單選按鈕的值。

首先，您需要爲每個單選按鈕分配一個文件夾的路徑（在創建單選按鈕時爲value='path\\to\\folder'）。然後，在askopenfilename中，您將通過self.favorite.get()作爲initialdir。最後，返回打開的文件是無用的，因爲你無法從按鈕命令中獲取它。所以你應該直接對askopenfilename函數裏的文件執行操作。在下面的例子中，我只是打印文件的內容。

import tkinter 
from tkinter import filedialog 

class filedialogexample(tkinter.Frame): 
    def __init__(self, root): 
     tkinter.Frame.__init__(self, root) 
     self.favorite = tkinter.StringVar() 

     tkinter.Radiobutton(self, text = "Browse 1", variable = self.favorite, 
       command=self.askopenfilename, value="folder1" 
       ).grid(row=2, column=0, columnspan=2, sticky='w') 
     tkinter.Radiobutton(self, text = "Browse 2", variable = self.favorite, 
       command=self.askopenfilename, value="folder2" 
       ).grid(row=3, column=0, columnspan=2, sticky='w') 
     tkinter.Radiobutton(self, text = "Browse 3", variable = self.favorite, 
       command=self.askopenfilename, value="folder3" 
       ).grid(row=4, column=0, columnspan=2, sticky='w') 
     tkinter.Radiobutton(self, text = "Browse 4", variable = self.favorite, 
       command=self.askopenfilename, value="folder4" 
       ).grid(row=5, column=0, columnspan=2, sticky='w') 
     # replace folder1,..,folder4 by actual paths to folders 


    def askopenfilename(self): 
     # initialdir is given by the selected radiobutton 
     filename = filedialog.askopenfilename(initialdir=self.favorite.get()) 
     if filename: 
      self.do_something_on_selected_file(filename) 

    def do_something_on_selected_file(self, filename): 
     with open(filename, 'r') as myfile: 
      print(myfile.read()) 

if __name__=='__main__': 
    root = tkinter.Tk() 
    filedialogexample(root).grid() 
    root.mainloop()