如何使用tkinter检索复制的文件名？

Question

I want to access the filename copied in Windows Explorer (or some other file manager) in my tkinter program. Here's how I'm trying to do this:

from tkinter import *

root = Tk()

def print_filename():
    print(root.clipboard_get(type="FILE_NAME"))

but = Button(root, text="Show filename", command=print_filename)
but.grid()

root.mainloop()

Unfortunately I get same error both in Windows 7/Python 3.4.1 and in Lubuntu 13.10/Python 3.3.2:

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python34\lib\tkinter\__init__.py", line 1487, in __call__
    return self.func(*args)
  File "C:\Users\Aivar\Desktop\get_file_from_clipboard.py", line 6, in show_filename
    print(root.clipboard_get(type="FILE_NAME"))
  File "C:\Python34\lib\tkinter\__init__.py", line 587, in clipboard_get
    return self.tk.call(('clipboard', 'get') + self._options(kw))
_tkinter.TclError: CLIPBOARD selection doesn't exist or form "FILE_NAME" not defined

Am I doing something wrong or should I report this as a bug?

Answer 1

I've run into the same exception, when the clipboard is empty or contains a different type. My solution was to use try & except :

def print_filename():
    try:
        clipboard = Tk().clipboard_get(type="FILE_NAME")
    except:
        clipboard = ""

    print(clipboard)