title: Pycharm dependencies are missing in Editor - Installed requirements.txt in a specified folder
body: <p>I'm working in a PyCharm Project for Google App Engine. According to the Google's <a href="https://cloud.google.com/appengine/docs/standard/python/tools/using-libraries-python-27#pip_requirements" rel="nofollow noreferrer">documentation</a> I have to use the following code to install the requirements:</p>
  
  <pre><code>pip install -t dependencies  -r requirements.txt 
  </code></pre>
  
  <p>This creates an folder 'dependencies' with all the packages in it. </p>
  
  <p>Pycharm don't recognize this folder so all installed packages (e. g. Flask) are underlined red --> autocomplete and functions like that don't work.</p>
  
  <p><a href="https://i.stack.imgur.com/deZQs.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/deZQs.png" alt="enter image description here"></a></p>
  
  <p>Is there a setting in PyCharm for setting the dependency folder? </p>
  
  <p>PS: The code works fine, if I run the project it works locally and on the Google App Engine.</p>
  
  <p>Here is a screenshot from my project interpreter and pip freeze:
  <a href="https://i.stack.imgur.com/Ymspl.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Ymspl.png" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/5OBhx.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/5OBhx.png" alt="enter image description here"></a></p>