Opening a second python file (tkinter)
One approach is to create a function that will handle the operations you need done, then bind the command of your button to it.
def close_current_and_open_other(): # code to close the current: destroy(), etc... # code to open the second programbtnLearn = Button(container2, image=imgLearnBtn, command=close_current_and_open_other).pack(side=BOTTOM, padx=100)