title: Autocomplete does not always work on Pycharm
body: <p>I'm starting to use Pycharm, creating a test with Pygame.</p>
  
  <p>I notice that some Pygame methods do not appear in Pycharm AutoComplete.</p>
  
  <p>For example, if I want to put a <code>pygame.mask.from_surface ()</code>, typing <code>pygame.mas</code> will not do anything. But if I manually complete <code>mask</code> and press<code>.</code>, then the auto-complete <code>from_surface ()</code> appears correctly.</p>
  
  <p>Ex:</p>
  
  <pre><code>import pygame
  car = pygame.image.load("car.png").convert_alpha()
  car_mask = pygame.mas    #### .... here, Pycharm should already show autocomplete
  </code></pre>
  
  <p>This also appears for other situations, for example, if I want to use <code>car.get_rect()</code>, it does not appear there anymore after typing <code>car.</code></p>
  
  <p>Here are my project settings:
  <a href="https://i.stack.imgur.com/lIA9P.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lIA9P.png" alt="enter image description here"></a></p>
  
  <p>How to fix this?</p>