simonespa/python-playground

Python Playground

Playground repository for Python exercises.

Getting Started

Create a virtual environment

Create a virtual environment with virtualenv

virtualenv .python

Activate the virtual environment

source .python/bin/activate

or

. python/bin/activate

Verify the virtual environment

You can confirm you’re in the virtual environment by checking the location of your Python interpreter

which python

Dependencies

Install the required dependencies

pip install -r requirements.txt

Run the code

Let's say there is an example.py module within the exercises folder that defines a hello function.

Open the Python interpreter

python

import the function you want to run from its module

from exercises.example import hello

execute the function

hello()

Modules don't have any "main" execution. If you were to run a file directly, you would need to add the following to it

if __name__ == '__main__':
  hello()

and then run

python exercises/example.py

Test and code formatting

To test every *_test.py module

pytest

To format every file in the exercises folder

black src

Requirements file

If you want to generate a new "requirements" file or add/remove dependencies and update the existing one

pip freeze > requirements.txt

How to upgrade the dependencies

Replace all == symbols in the requirements.txt file with >=, then run

pip install -r requirements.txt --upgrade

then run

pip freeze > requirements.txt

PIP useful commands

To list all the installed libraries in site-packages

pip list

To "show" the details of a specific library

pip show requests

Deactivate the current virtual environment

If you want to switch to another project or generally speaing leave your current virtual environment

deactivate