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Updating a label in Python tkinter! Please help :-) - CodeProject Solution 3. It is because tkinter window closed but other processes related to it e.g. Python. answerLabel.destroy () is still running. To avoid this, put try and except when calling answer () function. To avoid the error, do this whenever answer () is called: Python. changing tkinter label from thread - Welcome to python-forum.io I think the issue is that I cannot over write my tkinter label using a thread. The code fully runs. Just press "s" on your keyboard to start the thread. Upon opening the script, my tkinter Label correctly shows "initial words". Then I press "s" to start the thread, this prints the words "one" and "two" and calls the function changeState. Change the Tkinter Label Text | Delft Stack The Tk toolkit begins to track the changes of self.text and will update the text self.label if self.text is modified. The above code creates a Tkinter dyna...