Need help for Tkinter in python

Question

I try to make a GUI using Tkinter. However, it is not working. It runs my function first. Where did I do it wrong?

    import pyttsx3
    from openpyxl import load_workbook
    from tkinter import *
    
    def Do_test():
        i=0
        wb = load_workbook('words.xlsx')
        ws = wb.active
        for row in ws.values:
            for value in row:
                engine = pyttsx3.init()
                engine.say(value)
                engine.runAndWait()
                Ans = input("please enter the word")
                if Ans == value:
                    print ("Right")
                else:
                    print("wrong")
                    i = i+1
                    wrong = value
                    ws.cell(row=i, column=2, value=wrong)
        wb.save('result.xlsx')
    
    root = Tk()
    
    myButton = Button(root, text="Run", command=Do_test())
    myButton.pack()
    
    root.mainloop()

Thanks so much for the help

score 2 · Answer 1 · answered Aug 20 '21 at 08:23

2

myButton = Button(root, text="Run", command=Do_test())

dont use () in the command call

Right:

myButton = Button(root, text="Run", command=Do_test)

answered Aug 20 '21 at 08:23

Legit007

181
1
8

Thanks so much for the answer, but how do I pass an argument to my function without parentheses? – Zehao Chen Aug 21 '21 at 03:32

score 1 · Answer 2 · answered Aug 20 '21 at 09:22

1

You only have a small right in the last third line

myButton = Button(root, text="Run", command=Do_test())

here you wrote command=Do_test() ... This is wrong ... the parentheses () call a method, it is called as soon as the GUI will start... you have to remove the parenthese in orderr to make a function run on clicking the button..... like this command=Do_test

just replace that line by the following with proper indentation and your issue will be solved

myButton = Button(root, text="Run", command=Do_test)

answered Aug 20 '21 at 09:22

Prakhar Parikh

177
2
13

The difference is setting `command` to be the `Do_test` function itself, and not to the result of calling the function. – RufusVS Aug 20 '21 at 18:49
Thanks so much for the answer, but how do I pass an argument to my function without parentheses? – Zehao Chen Aug 21 '21 at 03:32
@Zehao Chen You should use lambdas if you want to pass an argument – Prakhar Parikh Aug 22 '21 at 15:32

Piero · Answer 3 · 2021-08-21T03:42:37.347

0

When you want to associate a function to a Tkinter button, you don't have to insert brackets. Otherwise when the script starts it runs as if you normally call it. To assign the function to the button, simply give it the name of the function without the brackets. So just write:

myButton = Button(root, text="Run", command=Do_test)

For passing parameter:

Do_test = the_test(param1, param2)
myButton = Button(root, text="Run", command=Do_test)

edited Aug 21 '21 at 03:42

answered Aug 20 '21 at 18:40

Piero

404
3
7
22

Thanks so much for the answer, but how do I pass an argument to my function without parentheses? – Zehao Chen Aug 21 '21 at 03:32

Need help for Tkinter in python

3 Answers3