Tkinter button executes when the window opens, and not when I click it-CodePudding

I have the following python code with tkinter module. I would like buttons to be an inner function in my code, below is an example where I face the same issue of tkinter button executing itself before I click it

from tkinter import *
from tkinter.filedialog import asksaveasfile

def main():
    
    root = Tk()
    root.geometry("777x575")
    root.columnconfigure(0, weight=1)
    root.columnconfigure(1, weight=2)

    root.rowconfigure(0, weight=1)

    text = Text(root, width = 405 , height = 205)
    text.place(x=500, y=10, anchor=S)

    def save():
        Files = [('All Files', '*.*'),
                ('Python Files', '*.py'),
                ('Text Document', '*.txt')]
        file = asksaveasfile(filetypes = Files, defaultextension = Files)

    button = Button(root, text = 'Save', command = lambda : save('Save'))
    button.place(anchor = CENTER, x = 400, y = 500)
    save()

    root.mainloop()
    
    
if __name__ == '__main__':
   main()

I have looked at solutions but nothing really has worked for this case. Any suggestions to solve this issue is highly appreciated.

CodePudding user response：

You called save() function before enters mainloop thats why it shows. Also in button command you called function with a parameter where function doesn't accept any arguments.

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.
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    text = Text(root, width = 405 , height = 205)
    text.place(x=500, y=10, anchor=S)

    def save():
        Files = [('All Files', '*.*'),
                ('Python Files', '*.py'),
                ('Text Document', '*.txt')]
        file = asksaveasfile(filetypes = Files, defaultextension = Files)

    button = Button(root, text = 'Save', command = lambda : save())
    button.place(anchor = CENTER, x = 400, y = 500)

    root.mainloop()

this should work