Python
Check out this cheatsheet: python cheatsheet
Virtual environments
To activate an existing virtual environment (venv) use the activate.bat. If project is at c:\someproject and has venv folder at c:\someproject\someVenv then usually call:
someVenv\scripts\activate.bat
pip list lists the actual packages in the venv
// navigate to project folder
cd c:\someproject
// create a new directory 'project-36'
mkdir project-36
// change currenct directory to 'project-36'
cd .\project-36
// create a virtual environment named 'venv', feel free to name it anything you like. -p Location is optional but makes sure to use a specific python version.
virtualenv venv -p C:\Python\Python36\python.exe
// activate the virtual environment
.\venv\Scripts\activate
// check the python version
python --version
// list all packages installed by default
pip list
// deactivate the virtual environment
deactivate
See also pipx for managing global packages that are not project-bound.
Taking arguments
Argparse has all the functionality one could want. See: docs.python.org
Stopping execution
On windows (and sometimes linux) cancelling python in the terminal can be tricky since io operations can ignore ctrl+c and similar commands. ctrl+break seems to work though and on thinkpad laptops is done with ctrl+fn+b due to the lacking break button.
Project templates
Cookiecutter allows setting up new projects from templates.