My Little Subclass: Inheritance is Magic
Sat 29 April 2017
by Moshe Zadka
Learning about Python Method Resolution Order with Twilight Sparkle and her friends.
(Thanks to Ashwini Oruganti for her helpful suggestions.)
The show "My Little Pony: Friendship is Magic" is the latest reimagination of the "My Little Pony" brand as a TV show. The show takes place, mostly, in Ponyville and …
read morePYTHONPATH Considered Harmful
Tue 11 April 2017
by Moshe Zadka
(Thanks to Tim D. Smith and Augie Fackler for reviewing a draft. Any mistakes that remain are mine.)
The environment variable PYTHONPATH seems harmless enough.
The official documentation refers to its function as
"Augment the default search path for module files."
However, in practice, setting this variable in a shell …
Shipping Python Applications in Docker
Fri 17 March 2017
by Moshe Zadka
Introduction
When looking in open source examples, or tutorials, one will often see Dockerfiles that look like this:
FROM python:3.6 COPY setup.py /mypackage COPY src /mypackage/src COPY requirements.txt / RUN pip install -r /requirements.txt RUN pip install /mypackage ENTRYPOINT ["/usr/bin/mypackage-console-script", "some", "arguments"]
This …