GUI application - code review

[Sr999]

Output:
Traceback (most recent call last):
  File "/tmp/Pylang/MainWindow.py", line 6, in <module>
    from ContinueLearnFrame import ContinueLearnFrame
  File "/tmp/Pylang/ContinueLearnFrame.py", line 156
    self.cards[0].itemconfigure('word', text=f'{self.words['learned']}')
                                                            ^^^^^^^
SyntaxError: f-string: unmatched '['

change it to

                        self.cards[0].itemconfigure('word', text=f'{self.words["learned"]}')
                        self.cards[1].itemconfigure('word', text=f'{self.words["native"]}')

didnt get those errors on my runs but indeed it may cause problems i have changed it thanks for the notes if u have any more thoughts i will glad to hear them