title: Python script to stop Tkinter
body: <p>I have the following code that uses Tkinter's askopenfilename to enable the user to select a file. The contents of this file is then used for a graph.  I'm only using Tkinter to allow the user to select the file, nothing else.  Therefore is there Python script that will end Tkinter after the file has been opened, which I want to be located in the line marked with '##'. Because Tkinter is still running, when it doesn't need to be. The code program that my code is for is to stop when the graph is plotted. Here is my code:</p>
  
  <pre><code>Exampe of the data
  x,y,
  1,4,
  3,9,
  6,7,
  ,,
  
  #Code starts
  import numpy as np
  from Tkinter import Tk
  from tkFileDialog import askopenfilename
  import matplotlib.pyplot as plt
  
  Tk().withdraw() # keep the root window from appearing (dont want full Gui)
  filename = askopenfilename()# show an "Open" dialog box and return the path to the    selected file print(filename)
  data = np.genfromtxt(filename, dtype=[('x',float),('y',float)],comments='"', delimiter=',',skip_header=1,missing_values=True)
  ##Location of tkinter stop code##
  x=data['x']
  x = x[np.logical_not(np.isnan(x))] #Remove Nan values
  y=data['y']
  y = y[np.logical_not(np.isnan(y))] # Remove Nan values
  plt.plot(x, y, 'ko', ms=4)
  plt.show()
  #Code Ends
  </code></pre>