title: ImportError for every third party library
body: <p>I know there are similar questions, but I've looked at them and none of them are what I'm looking for</p>
  
  <p>I'm running Python 3.7.0 on Windows 10, and I installed pygame-1.9.4 a few weeks ago, and it's been working fine until yesterday.</p>
  
  <p>I have a file called testing.py that just contains:</p>
  
  <p><code>import pygame</code></p>
  
  <p>when I run it via</p>
  
  <p><code>C:\Users\Me&gt;testing.py</code>, it returns the following error:
  <code>Traceback (most recent call last):
    File "C:\Users\Me\testing.py", line 1, in &lt;module&gt;
      import pygame
  ImportError: No module named pygame</code></p>
  
  <p>But when I'm in the Python shell, I can import it just fine</p>
  
  <p>This is the case for every third party library. I have tested Pillow, flask, and others. Importing from the standard library works fine
  I have uninstalled and reinstalled python and pygame, I've updated pip, I've updated setuptools as one person suggested, but none of it works</p>
  
  <p>I had been using Wing IDE personal 6, and I could also run it fine from there, but I didn't care for it. Please help!</p>