Episode #17: Google's Python is on fire and Simon says you have CPU load Pythonically

Published Sat, Mar 18, 2017, recorded Mon, Mar 13, 2017.

#1 Brian: python-fire

  • Suggested by several listeners
  • Under the Google repo set on github but not a Google product.
  • “Python Fire is a library for automatically generating command line interfaces (CLIs) from absolutely any Python object.”

Some Benefits as listed on the project page

  • a simple way to create a CLI in Python.
  • a tool for exploring and debugging Python code.
  • exploring existing code by turning other people's code into a CLI.
  • makes transitioning between Bash and Python easier.

My take:

  • Enough documentation right in the github repo for me to try it out.
  • Concise but thorough documentation, as well.
  • I wouldn’t ship a CLI with this, as it’s too heavy.
    • depends on ipython and six
  • It would be useful to very quickly throw together a CLI to try out some Python code from bash.
  • For internal development and debugging tools.
  • I think this week I’m going to try to build a few CLI tools for directly sending and receiving commands to some test instruments.

#2 Michael: Simon: Simple macOS menubar system monitor, written in Python 3.6 + pyobjc

  • Shows how simple a menubar app can be
  • Nice example of a platform-native Python app (we need more of these)
  • Could use it as a starter app for your ideas on macOS

#3 Brian: Free Food A couple of amusing Reddit posts about free food.

#4 Michael: HTTPie

  • Pronounced aitch-tee-tee-pie
  • A command line HTTP client with an intuitive UI, JSON support, syntax highlighting, wget-like downloads, plugins, and more.
  • A picture is worth many words, have a look: https://httpie.org/
  • Excellent support for JSON, XML, HTTP response headers, etc
  • I spoke before about Postman as an API test client, this is the CLI version.

#5 Brian: pipdeptree

  • Sometimes when doing pip list I see way more packages than I remember installing. That’s due to dependent installs.
  • pipdeptree is a simple command line tool that shows you your installed packages in an ascii tree structure so you can see who depends on.
  • Example. arrow ? I don’t remember installing that. Ah. arrow is a dependency of jinja2-time ,which is a dependency of cookiecutter , that I do remember installing.

#6 Michael: Not Your Father’s Python: Amazing Powerful Frameworks

  • When we were getting SignifAI off the ground, one of the biggest decisions we had to make right at the beginning was what our stack would be.
    • We know Python but…
    • But it’s important to note that our product and infrastructure must support hundreds of thousands of events per second.
    • So we were happy to see that, with the recent widespread adoption of Python 3 and the introduction of tasks and coroutines as first-class citizens in the language, Python has recently stepped up its game.
    • Python 3 has continued evolving into a new wave of libraries that disrupt and change old assumptions about Python performance for web applications.
    • Python’s GIL, is it a true roadblock?
    • UVLoop is the first ultra-fast asynchronous framework, which is a drop-in replacement for Python 3.5’s built-in asyncio event loop. Both Japronto and Sanic which are reviewed in this post are also based on UVLoop.
    • The future of Python is here: Overall, it looks like fast, asynchronous Python might be here to stay. Now that asyncio appears to be a default in Python and the async/await syntax has found favor among developers, the GIL doesn’t seem like such a roadblock anymore and speed doesn’t need to be a sacrifice.
  • Comment: https://blog.signifai.io/not-your-fathers-python-amazing-powerful-frameworks/#comment-3193753282
  • Sasha Cuerda‏’s tweet: https://twitter.com/sashacuerda/status/839839014836453377 @mkennedy @brianokken Just used the aiohttp example you talked about to refactor a CLI scraper...went from > 8' to < 45". Blown away.

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