Configuring Python for course development

Providing PYTHONPATH on Windows

To set PYTHONPATH on a windows machine follow the below steps:

  1. Open the Windows search bar and type python.exe (do not press Enter). Then right-click on the python.exe that appears in the menu and select Open file location.

  2. Copy all path to python.exe.

  3. Then right-click This PC and select Properties. Сlick on the Advanced system settings option. In the next window, select the Advanced tab and select Environment Variables.

    properties

  4. In the User Variables menu, find a variable named Path. Then paste the path you copied earlier into the Variable Value option.

    1. If you cannot find variable Path, create one. To do this, click New. Then in the variable name form type PYTHONPATH and paste your Python path into the variable value field.

      new python path

  5. Go back to the python.exe folder and open the Scripts folder. Copy its path.

  6. Go back to Environment variables. Type a semicolon after the path to python.exe and paste the path to the Scripts folder. Click OK.

    creating python path

To see if Python is added to the Windows PATH, open a terminal and type python --version, then press Enter. If it returns the currently installed version of Python, then you have successfully added it to the Windows PATH.

Setting up a virtualenv

Instructions for macOS users:

python3 -m pip install --user virtualenv
python3 -m virtualenv -p which python3 venv
source venv/bin/activate
python -m pip install -r requirements.txt

Instructions for Windows users:

python -m venv venv
venv\Scripts\activate
python -m pip install -r requirements.txt

Spell checking

  1. Install dependencies spell checker. For example, for macOS:

    brew install aspell

  2. Install Python dependencies:

    python -m pip install -r requirements_qa.txt

  3. Run checks:

    python -m pyspelling -c config/spellcheck/.spellcheck.yaml