[Tutor] help with .get in Tkinter

[Mark Kels]

Hi all.
First, here is the code I have a problem with (I got same problem in
my project) :
from Tkinter import *
def go():
    e.get()
    print e

main=Tk()
e=Entry(main)
e.pack()
b=Button(main,text='OK',command=go()).pack()
main.mainloop()

For some reason the function is called before I click the button, and
I get .10037088 before I have done a thing.
How do I do it right ???
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