[Tutor] Buttons automatically executing

[Phillip Hart]

Thanks for taking the time to read this.

Excuse me if this falls under the boundaries of a "newbie" question, as I am 
a self-taught programmer.

While using Tkinter to create buttons, something unexpected happens when the 
button commands call functions. Namely, when I run the following, it 
immediately executes the print statements without the button ever being 
pressed. Additionally, pressing the button once the Tk window is up will not 
activate the button.

#!usr/bin/python

from Tkinter import *

def location(x,y):
print "I am in row ",x," and column ",y


root=Tk()
root.geometry('300x300')
can=Canvas(root,width=250, height=250)

bimage=PhotoImage(file='sq1.gif')

b1=Button(can,bg="black",image=bimage,command=location(0,0)).grid(row=0,column=0)

can.pack()
root.mainloop()


Lastly, when I change the command to be anything other than a function, such 
as a print statement, it works fine. What am I doing wrong here? 

thanks again for your time and help,

green python user (no pun intended),
-Phillip
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