I've always had a hard time explaining variance of generic types while working with type annotations in Python. This is an attempt to distill the things I've picked up on type variance while going through PEP-483. A Pinch of Type Theory A generic type is ... (more…)

stack-overflow-import - Import arbitrary code from Stack Overflow as Python modules. (more…)

The ultimate step by step guide - for non-devs and wannabe data scientists - to install R, Python, SQL and Bash in 30 minutes and start data coding today.

To 'adequately' debug Celery under Windows, there are several ways such as: > celery worker --app=demo_app.core --pool=solo --loglevel=INFO But in fact for... (more…)

As you probably know, the GIL stands for the Global Interpreter Lock, and its job is to make the CPython interpreter thread-safe. The GIL allows... (more…)