PyCon 2018 Swag included a Gemma m0. (https://www.adafruit.com/product/3501)

PyCon 2019 Swag included a Circuit Playground Express. See https://learn.adafruit.com/adafruit-circuit-playground-express/circuitpython-quickstart.

Both of these are (to me) amazing. They mount as USB devices; there’s a code.py file that’s automatically run …

Interesting data structures with O(n) performance. This can help to unscramble O(n²) problems allowing progress. https://pdsa.readthedocs.io/en/latest/index.html

There are some things I could say.

But.

You can come to understand it yourself, also.

Go here: https://www.youtube.com/channel/UCxs2IIVXaEHHA4BtTiWZ2mQ

Start with the keynotes. https://www.youtube.com/channel/UCxs2IIVXaEHHA4BtTiWZ2mQ/search?query=keynote

For me, one of the top presentations was this https://www.youtube.com …

See http://flstevens.itmaybeahack.com/writing-world-building-and/ for some back-story on F. L. Stevens and the need to write a *lot* of query letters to agents for fiction. (The non-fiction industry is entirely different; there are acquisition editors who look for technical contributors.)

There's a tiny possibility of a Query Manager …

The PyLit tool dates from 2009. Here's a historical reference: http://wiki.c2.com/?PyLit It was Python 2. It had some minor problems. I forked it and cleaned it up for Python 3. Then I set it aside for a few years (six or so.) Dusting it off. Rearranging …

Got this in an email.

"Python's multi-threading module seems not efficient because of the global interpreter lock?"

Yep.

Is the trick is to use "Thread-Local Data"?

Nope.

https://sobolevn.me/2019/02/python-exceptions-considered-an-antipattern While eloquent and thorough, I remain unconvinced that this is a significant improvement over try/except. It's common enough in some functional languages to have strong support and a long, successful history. I think it replaces one problem with another. It's not a "solution …

Consider the following code

def max(m: int, n: int) -> int:
    if m >= n:
        return m
    elif n >= m:
        return n
    else:
        raise Exception(f"Design Error: {vars()}")

There's a question about else: clause and the exception raised there.

• It's impossible. In this specific case, a little algebra can provide …

See this

Dear Pythonista lazyweb: If I have a property spam and the attribute that backs it is _spam, what do we call that? The "backing attribute"? The "original property"? Something else? Is there an official term for this?

—Al Sweigart (@AlSweigart) January 29, 2019

My answer was -- frankly -- vague …