title: ImportError: No module named <module name> module inside folder
body: <p>I'm importing files from the following folder inside a python code:</p>
  
  <pre><code>Mask_RCNN
    -mrcnn
      -config.py
      -model.py
      -__init__.py
      -utils.py
      -visualize.py
  </code></pre>
  
  <p>I'm using the following imports:</p>
  
  <p>These work ok:
      from Mask_RCNN.mrcnn.config import Config
      from Mask_RCNN. mrcnn import utils</p>
  
  <p>These give me error:</p>
  
  <pre><code>from Mask_RCNN.mrcnn import visualize
  import mrcnn.model as modellib
  </code></pre>
  
  <p>Error:</p>
  
  <pre><code>ImportError: No module named 'mrcnn'
  </code></pre>
  
  <p>How to import these properly?</p>