self.btnInstructions.pack_forget()return Canvas has no element added byself.canvas.create_*()(http://infohost.nmt.edu/tcc/help/pubs/tkinter/web/canvas.html) Probably you want to remove buttons. Do NOT use.pack(),.place(),.grid()at the same time. They are three different layout manager...
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--- Include the above in your HEAD tag ---> <!DOCTYPE html> <html i18n-values="dir:textdirection;.style.fontSize:fontsize" dir="ltr" style="font-size: 75%;"><head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0...