need to change variable in func, but var local...

raskol · 04-08-2008, 03:24 AM

so the following doesnt work as i understand it because functions have local variables s the nbr=0 is a different variable with the same name.

so how do i get around this?

Code:

from __future__ import division
import Tkinter
from Tkinter import *

mygui = Tkinter.Tk()
mygui.title("Calculator")

w = Label(mygui, text="Calc this if you can!")
w.pack()

nbr=0

def Calc(nstr):
    nbr = nbr + 1
    print "You need to seek help!",nbr
    

b = Button(mygui, text="1",command=lambda n=1:Calc(n))
b.pack()

mygui.mainloop()

Hko · 04-08-2008, 04:23 AM

You can 'solve' it this way:

Code:

nbr = 0

def Calc(nstr):
    global nbr
    nbr = nbr + 1

But I wouldn't recommend this. Use a class instead, and make Calc() a mehtod of that class.