[Tkinter] tkinter issue with variables carrying over between functions

[PengEng]

Hi,

I suspect this is a very simple issue... I am trying to use a variable, loaded in one operation, within another operation. It is telling me the variable doesn't exist.

Below is the simplest way to reproduce my issue.

from tkinter import *

root = Tk()
root.title('Temp')
root.geometry('300x300')

def Import():
    u = 1
    v = 2

directoryButton = Button(root, text='Import', command=Import, padx=15)
directoryButton.grid(row=0,column=0 )

def Calc():
    t = u*v
    print(t)

directoryButton = Button(root, text='Calc', command=Calc, padx=15)
directoryButton.grid(row=0,column=1 )

root.mainloop()

Help would be massively appreciated.

Thanks,