title: ImportError: No module named FileDialog - after PyInstaller
body: <p>I have written a program that I have tried to turn into an executable using PyInstaller. Pyinstaller appears to have finished without any errors and I end up with an application in /dist/my_program. However, when I try to run that application a console window flashes up for a second with a traceback:</p>
  
  <p>Edit: I have copied the traceback out. There may be a mistake as I had to type it up from a screenshot because it only flashes up.</p>
  
  <pre><code>Traceback (most recent call last):
  File "&lt;string&gt;", line 14, in &lt;module&gt;
  File "C:\Users\user\desktop\PyInstaller-2.1\PyInstaller\loader\pyi_importers.py", line 270, in load_module
  exec(bytecode, module.__dict__)
  File "C:\Users\user\desktop\PyInstaller-2.1\my_program\build\my_program\out00-PYZ.pyz\matplotlib.pyplot", line 108, in &lt;module&gt;
  File "C:\Users\user\desktop\PyInstaller-2.1\my_program\build\my_program\out00-PYZ.pyz\matplotlib.backends", line 32, in pylab_setup
  File "C:\Users\user\desktop\PyInstaller-2.1\PyInstaller\loader\pyi_importers.py", line 270, in load_module
  exec(bytecode, module.__dict__)
  File "C:\Users\user\desktop\PyInstaller-2.1\my_program\build\my_program\out00-PYZ.pyz\matplotlib.backends.backend_tkagg", line 7, in &lt;module&gt;
  File "C:\Users\user\desktop\PyInstaller-2.1\my_program\build\my_program\out00-PYZ.pyz\six", line 194, in load_module
  File "C:\Users\user\desktop\PyInstaller-2.1\my_program\build\my_program\out00-PYZ.pyz\six", line 108, in _resolve
  File "C:\Users\user\desktop\PyInstaller-2.1\my_program\build\my_program\out00-PYZ.pyz\six", line 779, in _import_module
  ImportError: No module named FileDialog
  </code></pre>
  
  <p>Below are the imports that I have in my code:</p>
  
  <pre><code>import Tkinter
  from tkFileDialog import askopenfilename
  import numpy as np
  import matplotlib.pyplot as plt
  import matplotlib.mlab as mlab
  from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
  import subprocess
  from PIL import Image, ImageTk
  import os
  </code></pre>
  
  <p>Does anyone know whats causing this/what the fix is? I presume the error is the importation of tkFileDialog?</p>
  
  <p>Edit2: the program runs fine when I run it in my interpreter (Spyder) but when I packaged it using PyInstaller the resulting application gives this error.</p>