Python中使用tkFileDialog实现文件选择、保存和路径选择

#coding=UTF-8    
import Tkinter, Tkconstants, tkFileDialog  
class TkFileDialogExample(Tkinter.Frame):  

    def __init__(self, root):  
        Tkinter.Frame.__init__(self, root)  
        # options for buttons  
        button_opt = {'fill': Tkconstants.BOTH, 'padx': 5, 'pady': 5}  

        # define buttons  
        Tkinter.Button(self, text='askopenfile', command=self.askopenfile).pack(**button_opt)  
        Tkinter.Button(self, text='askopenfilename', command=self.askopenfilename).pack(**button_opt)  
        Tkinter.Button(self, text='asksaveasfile', command=self.asksaveasfile).pack(**button_opt)  
        Tkinter.Button(self, text='asksaveasfilename', command=self.asksaveasfilename).pack(**button_opt)  
        Tkinter.Button(self, text='askdirectory', command=self.askdirectory).pack(**button_opt)  

        # define options for opening or saving a file  
        self.file_opt = options = {}  
        options['defaultextension'] = '.txt'  
        options['filetypes'] = [('all files', '.*'), ('text files', '.txt')]  
        options['initialdir'] = 'C:\\'  
        options['initialfile'] = 'myfile.txt'  
        options['parent'] = root  
        options['title'] = 'This is a title'  

        # This is only available on the Macintosh, and only when Navigation Services are installed.  
        #options['message'] = 'message'  

        # if you use the multiple file version of the module functions this option is set automatically.  
        #options['multiple'] = 1  

        # defining options for opening a directory  
        self.dir_opt = options = {}  
        options['initialdir'] = 'C:\\'  
        options['mustexist'] = False  
        options['parent'] = root  
        options['title'] = 'This is a title'  

    def askopenfile(self):  

        """Returns an opened file in read mode."""  

        return tkFileDialog.askopenfile(mode='r', **self.file_opt)  

    def askopenfilename(self):  

        """Returns an opened file in read mode. 
        This time the dialog just returns a filename and the file is opened by your own code. 
        """  

        # get filename  
        filename = tkFileDialog.askopenfilename(**self.file_opt)  

        # open file on your own  
        if filename:  
            return open(filename, 'r')  

    def asksaveasfile(self):  

        """Returns an opened file in write mode."""  

        return tkFileDialog.asksaveasfile(mode='w', **self.file_opt)  

    def asksaveasfilename(self):  

        """Returns an opened file in write mode. 
        This time the dialog just returns a filename and the file is opened by your own code. 
        """  

        # get filename  
        filename = tkFileDialog.asksaveasfilename(**self.file_opt)  

        # open file on your own  
        if filename:  
            return open(filename, 'w')  

    def askdirectory(self):  

        """Returns a selected directoryname."""  

        return tkFileDialog.askdirectory(**self.dir_opt)  

if __name__ == '__main__':  
    root = Tkinter.Tk()  
    TkFileDialogExample(root).pack()  
    root.mainloop()  

from tkFileDialog import askdirectory

from tkinter.filedialog import askdirectory