Q:

I am programming a Numbers game, so you can bet on numbers

I am working on a GUI with tkinter and python 3.6, How can I add entries from a textBox and send them to another textBox? (the total textBox)
def btntotal() :
    Item2= var2.get()
    Total = sum(Item2)
    text2.insert(END, str(Total))

That doesnt work.

A:

There is not much code to work with, but you should be able to adapt this:
def btntotal() :
    global Total   # because you are modifying the variable Total in the function namespace
    Item2 = float(var2.get())      # cast to float (or to int if you need ints)
    Total += Item2                 # update Total
    text2.insert(END, str(Total))  # Display Total in text2

