python - Execfile running the file twice when used with import -

i want have textbox , button in gui , on clicking button, should take text , store in variable other file , run other file.

i want user enter access token , gui should save in global variable access_token of utilities.py when importing function setting access token only, file runs don't want until button clicked. so, file running twice.

this gui.py

from tkinter import * import tkinter tk utilities import setaccesstoken  root = tk.tk()  def callback():     setaccesstoken(e1.get())     execfile('utilities.py')  e1 = entry(root,bd = 5, width = 10) e1.pack() #similarly other gui stuff command = callback()  mainloop() 

this utilities.py

access_token = "" def setaccesstoken(token):     global access_token     access_token = token  print 'running utilities : access_token =', access_token 

my expected output is:

running utilities: access_token = access token 

but getting output twice, is:

running utilities: access_token = running utilities: access_token = access token 

is there way in can stop file utilities.py running when importing it?

when import python file, code in executed. that's how python works. prevent executing unwanted code, should use __name__ this:

access_token = "" def setaccesstoken(token):     global access_token     access_token = token  if __name__ == '__main__':     print 'running utilities : access_token =', access_token