title: Folder naming convention for python projects
body: <p>What is the naming convention in python community to set names for project folders and subfolders? </p>
  
  <pre><code>my-great-python-project
  my_great_python_project 
  myGreatPythonProject 
  MyGreatPythonProject
  </code></pre>
  
  <p>I find mixed up in the github. 
  Appreciate your expert opinion. </p>