March 17, 2025

#424 We Will Test in Production

27 minutes

Topics covered in this episode:

The weird quirk with rounding in Python

Python interpreter adds tail calls

Remove punctuation from a string with translate and maketrans

Extra, extra, extra

Extras

Joke

Watch on YouTube

About the show

Sponsored by us! Support our work through:

Our courses at Talk Python Training

The Complete pytest Course

Patreon Supporters

Connect with the hosts

Michael: @[email protected] / @mkennedy.codes (bsky)

Brian: @[email protected] / @brianokken.bsky.social

Show: @[email protected] / @pythonbytes.fm (bsky)

Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Monday at 10am PT. Older video versions available there too.

Finally, if you want an artisanal, hand-crafted digest of every week of the show notes in email form? Add your name and email to our friends of the show list, we'll never share it.

Brian #1: The weird quirk with rounding in Python

Tom Nijhof-Verheesb

With numbers ending in .5, Python always rounds to an even number.

round(0.5) → 0

round(1.5) → 2

etc

This follows IEEE 754

You can use decimal if you need a different behavior.

Michael #2: Python interpreter adds tail calls

Ken Jin, a member of the project, has merged a new set of changes that have been benchmarked as improving performance by 10% for some architectures.

"Speedup is roughly equal to 2 minor CPython releases worth of improvements. For example, CPython 3.12 roughly sped up by 5%.”

Brian #3: Remove punctuation from a string with translate and maketrans

Rodrigo

“Don't use the method replace to remove punctuation from a Python string. Instead, use the method translate.”

Michael #4: Extra, extra, extra

Animation v Coding, hello world to transformers

TypeScript rewritten in Go

Firefox lies

PyCon’s Startup Row

Python in Production Book

Extras

Joke: Startrek Testing

...more

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By Michael Kennedy and Brian Okken

4.7

210210 ratings

March 17, 2025

#424 We Will Test in Production

27 minutes

Topics covered in this episode:

The weird quirk with rounding in Python

Python interpreter adds tail calls

Remove punctuation from a string with translate and maketrans

Extra, extra, extra

Extras

Joke

Watch on YouTube

About the show

Sponsored by us! Support our work through:

Our courses at Talk Python Training

The Complete pytest Course

Patreon Supporters

Connect with the hosts

Michael: @[email protected] / @mkennedy.codes (bsky)

Brian: @[email protected] / @brianokken.bsky.social

Show: @[email protected] / @pythonbytes.fm (bsky)

Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Monday at 10am PT. Older video versions available there too.

Finally, if you want an artisanal, hand-crafted digest of every week of the show notes in email form? Add your name and email to our friends of the show list, we'll never share it.

Brian #1: The weird quirk with rounding in Python

Tom Nijhof-Verheesb

With numbers ending in .5, Python always rounds to an even number.

round(0.5) → 0

round(1.5) → 2

etc

This follows IEEE 754

You can use decimal if you need a different behavior.

Michael #2: Python interpreter adds tail calls

Ken Jin, a member of the project, has merged a new set of changes that have been benchmarked as improving performance by 10% for some architectures.

"Speedup is roughly equal to 2 minor CPython releases worth of improvements. For example, CPython 3.12 roughly sped up by 5%.”

Brian #3: Remove punctuation from a string with translate and maketrans