Damian's Dev Blog

Howdy all! I hope everyone is riding out this delta covid surge reasonably well.

This will likely be my last Pywikibot report. My code reviews are stuck and working on Pywikibot is remarkably lonely. Pywikibot is neat, but it’s difficult to stay interested when my contributions dawdle on a shelf. C’est la vie.

In lieu of code I’m binging Death Throes of the Republic. Rome’s collapse began with the senate’s murder of the reformer Tiberius Gracchus. Breaking the norm against political violence just once spiraled out of control into a tit-for-tat revenge cycle that must have horrified its original perpetrators.

Rome offers a troubling warning of what the January 6th lynch mob could have begun. Folks, lets not play with fire.

Type Hints

Prior to my Rome binge I doubled down on Pywikibot’s type hints. Poor Xqt. I kinda buried him in code reviews…

• diff.py
• echo.py
• editor.py
• exceptions.py
• family.py
• flow.py
• i18n.py
• __init__.py
• interwiki_graph.py
• logentries.py
• logging.py
• login.py
• pagegenerator.py
• proofreadpage.py

Happy summer everyone! This month my sister and I camped at Fort Townsend, which aside from adorable douglas squirrels features an explosive dismantling tower. Its plaque reads…

“This brick building was a US Navy Explosives Laboratory built during World War II. Enemy submarine torpedoes and sea mines were brought here to be dissembled. A large two million volt x-ray machine was utilized to detect the exact position of the detonation fuse. Ten inches of steel could be penetrated by the high powered machine.”

I love history. According to Dan Carlin’s Supernova in the East Japan had significantly superior torpedoes at the outbreak of war. Maybe this tower helped close that gap?

Type Hints

Much of my work from last month is stuck in code review purgatory, so this month I swapped to type hinting which is far quicker to review. Pywikibot has 94 files so like our scripts this will be an ongoing project.

• bot_choice.py
• bot.py
• cosmetic_changes.py
• daemonize.py
• date.py

Naturally this is accompanied by small bug fixes as I go…

• buffer_interface string representation is unhelpful
• Remove broken bot_choice.UnhandledAnswer constructor
• Tests fail if family is named ‘test’

Hi all! This month I moved on from Tor to begin volunteering with Wikipedia. Covid taught me the importance of face to face contact, and Wikipedia has local Seattle meetups that could scratch an itch Tor didn’t.

Something I desperately look forward to now that I have…

To get my feet wet I invested this month toward standardizing and making minor adjustments to pywikibot…

• Suffix all exceptions with ‘Error’.
• Consistently use string’s format().
• Remove usage of the deprecated distutils module.
• Drop unnecessary else/elif used after raise.
• Context manager to suppress and assert a bot’s logs.
• Renamed config2 and is_IP.
• Deprecated DotReadableDict, SelfCall, SizedKeyCollection, empty_iterator, frozenmap, textlib.unescape, and regex classes.
• Fixed minor test failures (1, 2, 3).

Happy election season, everyone! Isolation drove me to spend a week just reading the Constitution and surrounding case law. My favorite is the 27th amendment, ratified 202 years after it was proposed because a TA gave 19 year old Gregory Watson a bad grade. Civics is delightfully odd.

Has it really been three months since my last post? Pandemic malaise has weighed me down, but also my work hasn’t been terribly sexy…

• Tested all the example code on our website.
• Implemented client side HSv3 authentication support.
• Signature verification instructions, replaced trac links, and the usual myriad of fixes.

Honestly since Shari’s departure I haven’t felt excited by anything at Tor. I should poke around some other communities to see what’s around.

Dear diary, pandemic day 7,114. Placed a fancy hat on the fish. Questioned sanity, but voices reassure me I’m still sane. Treasonous cucumber sentenced to food processor, but asparagus now conspires too? Pez dispenser is all I can trust.

Asyncio

Vegetable coups aside, Illia and I migrated Stem to asyncio! Txtorcon was previously the only asynchronous game in town, but now Stem supports both synchronous and asynchronous usage.

import asyncio

from stem.control import Controller


async def print_version_async():
  async with Controller.from_port() as controller:
    await controller.authenticate()
    print('[with asyncio] tor is version %s' % await controller.get_version())


def print_version_sync():
  with Controller.from_port() as controller:
    controller.authenticate()
    print('[without asyncio] tor is version %s' % controller.get_version())

print_version_sync()
asyncio.run(print_version_async())

% python demo.py 
[without asyncio] tor is version 0.4.5.0-alpha-dev (git-9d922b8eaae54242)
[with asyncio] tor is version 0.4.5.0-alpha-dev (git-9d922b8eaae54242)

Internally Stem is now asynchronous from the bottom up. This provides deeper control over our execution, for example asyncio.wait_for() can apply a timeout to any of our methods.

Usually asyncio doesn’t play well with conventional usage, but Stem transparently applies a compatibility layer so synchronous users likely won’t even notice this change.

Hi all. After vanishing the last few months I’m delighted to announce a major new Stem feature: type hints!

Python 3’s type information provide benefits familiar to statically typed languages like Java:

IDE autocompletion

Static type checks

Fresh off the press, this has many rough edges. In particular our library’s internal metaprogramming is incompatible with type data. However, as we refactor our APIs for Stem’s 2.0 release this will only improve.

Aloha! COVID-19 reached Seattle so I’m hunkering down, but prior to that I visited my family in Kona, Hawaii.

Lazy turtles and cute geckos aside, I particularly loved Kona Joe’s roastery tour and Pu`uhonua O Hōnaunau. If you travel to the big island check ’em out!

Deprecation Removal

This month we dropped Python 2 support, and with it 1,200 lines of compatibility hacks. Stem’s next release will require Python 3.6 or greater.

This month I also culled another 2,900 lines of deprecated code. Like any sophisticated library Stem grew organically over the last eight years. Some features are a hit, others clutter our API. Stem 2.x is our opportunity to streamline so expect more rearchitecture going forward.

Winter is such a snoozy season. Eggnog and Stem’s holiday release fading to memory, January I got back to work.

Port BridgeDB to Python 3

Python 2’s discontinuation makes it porting season! Stem and Nyx are ahead of the curve, so this month I migrated BridgeDB for Philipp.

This was a lot of work, but only possible thanks to Isis’ great test coverage. My compliments to our former maintainer!

GitHub Migration

Rather than move to GitLab I joined Ooni and part of the Network Team on GitHub. For tickets and pull requests please visit Stem and Nyx on their new home!

Georg asked to subsume responsibility for DocTor so he can move it according to his platform preference instead.