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make Tkinter dependency optional

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Tkinter is required only for the new --gui option but not for filetags
core functionality, still it has to be installed in order to run
filetags at the moment.
This commit makes the import of Tkinter optional as long as the --gui
option is not passed, thus allowing users that don't have Tkinter
installed on their system to keep using filetags like before.
In case the --gui option is passed and Tkinter can't be imported an
error message is printed instructing the user to install the Python
Tkinter module similar to the safe import of other modules.
This commit is contained in:
Jonathan Vahlsing 2026-02-26 13:28:35 +01:00
parent b68a731c81
commit 7045c9a8e0
1 changed files with 10 additions and 2 deletions
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12
filetags/__init__.py
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@ -46,8 +46,12 @@ import argparse # for handling command line arguments
import time
import logging
import errno # for throwing FileNotFoundError
import tkinter as tk ## for --gui
from tkinter import ttk ## for --gui
try:
import tkinter as tk ## for --gui
from tkinter import ttk ## for --gui
have_tkinter = True
except ModuleNotFoundError:
have_tkinter = False
safe_import('operator') # for sorting dicts
safe_import('difflib') # for good enough matching words
@ -2972,6 +2976,10 @@ def main():
error_exit(3, "I found option \"--tag\" and option \"--interactive\". \n" +
"Please choose either tag option OR interactive mode.")
if options.gui and not have_tkinter:
error_exit(4, "Could not find Python module \"tkinter\", which is required for --gui option. \n"+
"Please install it (e.g., \"apt install python3-tk\") or don't use this option.")
if not options.interactive and options.gui:
logging.warning('Found option "--gui" without option "--interactive". Will ignore that.')