title: Convert .py to .ipynb file in pycharm
body: <p>As <a href="https://www.jetbrains.com/help/pycharm/jupyter-notebook-support.html" rel="noreferrer">Jupyter Notebook integration</a> is available in PyCharm professional, is there a GUI option to convert a .py to a .ipynb file?
  I tried to edit the file extension, e.g. from test.py to test.ipynb, but then I can't open the .ipynb file.</p>