[python] [Tkinter] Problem bidding combobox with np.array

[Yoriz]

It depends on what you are trying to do with

weights = np.array([a])

If you moved it to the function it would be created when the callback happens

def callback(event):
    a = [float(w1.get()),float(w2.get()),float(w3.get()),float(w4.get())]
    
    print(a)
    weights = np.array([a])

but you would not be able to access weights outside of the call back.

You would have a better time using classes for GUI code.