Fuction can't be found using tkinter

Question

I'm new to tkinter and I'm not 100% sure on how the whole frame, self, etc works.

I have this:

class ScalesPage(Frame):
        def GetNotes():
                key = KeyEntry.get()
                intervals = ScaleEntry.get()
                WholeNotes = ['C','C#','D','D#','E','F','F#','G','G#','A','A#','B']*4
                Root = WholeNotes.index(key)
                Chromatic = WholeNotes[Root:Root+12]
                print([Chromatic[i] for i in scales[intervals]])

        def __init__(self, parent, controller):
                Frame.__init__(self, parent)
                global KeyEntry
                KeyEntry = Entry(self)
                KeyEntry.pack()
                global ScaleEntry
                ScaleEntry = Entry(self)
                ScaleEntry.pack()
                ScaleButtonEnter = Button(self, text="Enter", command=GetNotes)
                ScaleButtonEnter.pack()

I'm trying to make the ScaleButtonEnter execute GetNotes(), but I keep getting the error

NameError: name 'GetNotes' is not defined

I'm assuming I'm missing something easy, but I'm just not familiar enough with tkinter to figure it out.

https://stackoverflow.com/questions/11759269/calling-static-method-in-python — sshashank124, Dec 29 '19 at 04:49
Also check this out: https://stackoverflow.com/questions/12735392/python-class-static-methods — sshashank124, Dec 29 '19 at 04:51

score 0 · Accepted Answer · edited Dec 29 '19 at 08:55

0

Use self.GetNotes() instead of GetNotes().

edited Dec 29 '19 at 08:55

Ch3steR

20,090
4
28
58

answered Dec 29 '19 at 04:59

Hyperplexx

28
1

DaniyalAhmadSE · Answer 2 · 2019-12-30T12:14:53.063

0

You should use:

command=self.GetNotes

As using command=self.GetNotes() will just call the function there, While you need it to be called only when the button is pressed.

There is no need of using the parenthesis () and if you want to use it without any reason you will have to use lambda.

Like this:

command=lambda: self.GetNotes()

edited Dec 30 '19 at 12:14

answered Dec 29 '19 at 16:03

DaniyalAhmadSE

807
11
20

Fuction can't be found using tkinter

2 Answers2