Episode #66: Wait, NoSQL with ACID and transactions?
Published Fri, Feb 23, 2018, recorded Thurs, Feb 22, 2018.
Sponsored by Rollbar: https://pythonbytes.fm/rollbar
- Real Python
- Nice modern introduction to classes, inheritance, and OOP.
- Classes, objects, attributes, instances, and inheritance.
- One gotcha not mentioned
__init__()method of a base class is not called automatically by derived classes. If you override it, you need to call
- Also, check out attrs for much of our OOP needs
Michael #2: ScriptedForms
- Quickly create live-update GUIs for Python packages using Markdown and a few custom HTML elements.
- Just write in markdown + variables / UI types
- Based on Jupyter
- Mind blown. Didn’t see this coming
- “MongoDB 4.0 will add support for multi-document transactions, making it the only database to combine the speed, flexibility, and power of the document model with ACID data integrity guarantees. Through snapshot isolation, transactions provide a globally consistent view of data, and enforce all-or-nothing execution to maintain data integrity.”
- Due out this summer.
Michael #4: Python packaging pitfalls
- Just a short list of packaging blunders
- Forgetting to clean the build dir
- Forgetting to specify package data
- Fine grained MANIFEST.in
- Using package_data, or worse: fine grained package_data
- Listing excludes/prunes before includes/grafts
- Hardcoding packages list in setup.py
- Hardcoding py_modules list in setup.py
- Importing your package in setup.py
- Importing unavailable tools in setup.py
- Messing with the environment
- Your tests do not test the installed code
Brian #5: Blogging principles
- Julia Evans @b0rk
- Be honest about what you know
- Try not to write anything too long.
- (My note: don’t shy away from long tutorials. Just don’t only do long stuff)
- Be positive.
- Write for the past you.
- Stick with your own experience.
- It’s ok if not everyone likes it
- Don’t try to keep one upping yourself.
Michael #6: pipenv is officially official
- Pipenv — the officially recommended Python packaging tool from Python.org, free (as in freedom).
- Pipenv is a tool that aims to bring the best of all packaging worlds (bundler, composer, npm, cargo, yarn, etc.) to the Python world.
- Windows is a first–class citizen, in our world.
- It automatically creates and manages a virtualenv for your projects
- adds/removes packages from your Pipfile as you install/uninstall packages
- generates the ever–important Pipfile.lock, which is used to produce deterministic builds.
Follow up and other news
- Productive pytest with PyCharm webinar was recorded Thursday 22nd of Feb.
- Will be available here: https://www.jetbrains.com/community/webinars/