Episode #61: On Being a Senior Engineer
Published Tues, Jan 16, 2018, recorded Wed, Jan 10, 2018.
Sponsored by DigitalOcean: http://do.co/python
Brian #1: PEP 412's dict key sharing for classes
- "memory use is reduced by 10% to 20% for object-oriented programs with no significant change in memory use for other programs."
- To benefit from this, make sure all attributes used in life of class instances are initialized within
- Video from PyCon 2017
- Brandon Rhodes The Dictionary Even Mightier PyCon 2017
- Look at description at about 14 minutes on in the video
- Suggested by Ned Letcher
Michael #2: Python Hunter
- via Ivan Pejić
- Hunter is a flexible code tracing toolkit, not for measuring coverage, but for debugging, logging, inspection and other nefarious purposes. It has a Python API, terminal activation (see Environment variable activation). and supports tracing other processes (see Tracing processes).
- The default action is to just print the code being executed
- Based on cython
Brian #3: Ten Things I Wish I’d Known About bash
- I started with ksh on Solaris/HP-UX, used zsh for few years.
- Mostly now, I use bash, because it’s everywhere. Mac/Windows/Linux
- For windows: git for windows
- Even if you don't need git, git for windows comes with fully integrated unix tools and bash and it just works as you expect.
- you can launch windows applications
- most of the frequent bash commands are there
- If you really don’t want bash, consider cmder
- Snakefood is a tool written by Martin Blais to create Python dependency graphs.
- Combined with GraphViz, snakefood can create beautiful visualizations of Python codebases.
- Python Web Frameworks: The different development philosophies of Bottle, Django, Flask, and Pyramid are apparent by looking at their snakefood graphs.
- Bottle: A fast and simple micro framework for Python web applications.
- Django: A batteries-included web framework for perfectionists with deadlines.
- Flask: A microframework for Python.
- Pyramid: A small, fast, down-to-earth, open source Python web framework. It makes real-world web application development and deployment more fun, more predictable, and more productive.
- Also Queueing Implementations
Brian #5: On Being a Senior Engineer
- 2012 article that's still very valid
- Obligatory Pithy Characteristics of Mature Engineers
- Mature engineers ...
- seek out constructive criticism of their designs.
- understand the non-technical areas of how they are perceived.
- do not shy away from making estimates, and are always trying to get better at it.
- have an innate sense of anticipation, even if they don’t know they do.
- understand that not all of their projects are filled with rockstar-on-stage work.
- lift the skills and expertise of those around them.
- make their trade-offs explicit when making judgements and decisions.
- don’t practice CYAE (“Cover Your Ass Engineering”)
- are empathetic.
- don’t make empty complaints.
- are aware of cognitive biases:
- Self-Serving Bias
- Fundamental Attribution Error
- Hindsight Bias
- Outcome Bias
- Planning Fallacy
- The Ten Commandments of Egoless Programming
- Understand and accept that you will make mistakes.
- You are not your code.
- No matter how much “karate” you know, someone else will always know more.
- Don’t rewrite code without consultation.
- Treat people who know less than you with respect, deference, and patience.
- The only constant in the world is change.
- The only true authority stems from knowledge, not from position.
- Fight for what you believe, but gracefully accept defeat.
- Don’t be “the coder in the corner.”
- Critique code instead of people – be kind to the coder, not to the code.
- Novices versus Experts
- Dirty secret: mature engineers know the importance of (sometimes irrational) feelings people have. (gasp!)
- “It is amazing what you can accomplish if you do not care who gets credit.”
Michael #6: Python UI frameworks
- TkInter (tutorial) - not amazing, not at all (example).
- PySide and Qt - hard to install, weird licensing and versioning, but has a nice designer
- Kivy and PyGame/PyOpenGL - game / simulation like
- wxPython seems not bad actually
- What else? A few platform specific examples
- The problem: was discussed last week
- Some more Electron.JS like solutions
- Eel is a little Python library for making simple Electron-like offline HTML/JS GUI apps, with full access to Python capabilities and libraries.
- CEFPython - Chrome browser control, a HTML 5 based Python GUI framework.