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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · 8h

I'd just like to reiterate the honour it is to receive this award and I'm deeply humbled by the fact that all the other recipients (Katie, Sarah, and past recipients) have made such meaningful contributions to the community and yet I'm among them!

This is just the start :D

Python Software Foundation @python.org · 1d

Congrats to the newest PSF Community Service Award recipients! @glasnt.com, @sarahkuchinsky.bsky.social, and @mathspp.com have each made lasting contributions to the Python community 🐍🗺️ Their service to the Python community deserves recognition and celebration! pyfound.blogspot.com/2025/10/anno...

Announcing PSF Community Service Award Recipients!

The PSF Community Service Awards (CSA’s) are a formal way for the PSF Board of Directors to offer recognition of work which, in its opinion, significantly improves the Foundation's fulfillment of its mission and benefits the broader Python community. These awards shine a light on the incredible people who are the heart and soul of our community– those whose dedication, creativity, and generosity help the PSF fulfill its mission. The PSF CSAs celebrate individuals who have been truly invaluable, inspiring others through their example, and demonstrates that service to the Python community leads to recognition and reward. If you know of someone in the Python community deserving of a PSF CSA award, please submit them to the PSF Board via [email protected] at any time. You can read more about PSF CSAs on our website. The PSF Board is excited to announce three new CSAs, awarded to Katie McLaughlin, Sarah Kuchinsky, and Rodrigo Girão Serrão, for their contributions to the Python community. Read more about their contributions and impact below.

pyfound.blogspot.com

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · 3d

That's your 100th email right there:

“Hey folks, we're 100 emails and to celebrate I wanted to tell you what you can expect from the next 100 emails:

I have NO IDEA what's coming!

See you next week!”

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · 3d

There's just SO MUCH STUFF in Python 3.14. ✨

I decided I'm going to share the new updates, drop by drop, in my Python drops 🐍💧 newsletter.

If you want to learn about what's new in Python 3.14 without getting overwhelmed, subscribe 👉 mathspp.com/drops

Python drops 🐍💧 newsletter

Take your Python 🐍 skills to the next level. 🚀

mathspp.com

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · 3d

A recap? A bird's eye view of what happened? A sneak peek into what's coming?

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · 3d

Thanks for the link!

*Starts reading*

*Sees 172 collapsed items*

Oh boy, I didn't know I was about to read a novel 🤣

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · 3d

`pathlib.Path.move` docs: docs.python.org/3/library/pa...

pathlib — Object-oriented filesystem paths

Source code: Lib/pathlib/ This module offers classes representing filesystem paths with semantics appropriate for different operating systems. Path classes are divided between pure paths, which pro...

docs.python.org

Rodrigo Girão Serrão 🐍🚀 @mathspp.com · 3d

Maybe it's too early, but I'm having a hard time understanding the difference between `pathlib.Path.move` (new in Python 3.14) and `pathlib.Path.rename`.

Maybe the edge cases are different, but isn't the “main behaviour” the same?

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · 6d

I've turned this blog post cheatsheet into a downloadable cheatsheet.

You can get the cheatsheet from here: mathspp.com/blog/uv-chea...

High-contrast uv cheatsheet with common and useful commands to create and manage projects and its dependencies and lifecycle, working with scripts, managing Python installations, working with and installing tools, uv's interface for pip and venv, meta commands, and miscellaneous commands. You can find an HTML version and the link to download the high resolution images at https://mathspp.com/blog/uv-cheatsheet.

Dark mode uv cheatsheet with common and useful commands to create and manage projects and its dependencies and lifecycle, working with scripts, managing Python installations, working with and installing tools, uv's interface for pip and venv, meta commands, and miscellaneous commands. You can find an HTML version and the link to download the high resolution images at https://mathspp.com/blog/uv-cheatsheet.

Light mode uv cheatsheet with common and useful commands to create and manage projects and its dependencies and lifecycle, working with scripts, managing Python installations, working with and installing tools, uv's interface for pip and venv, meta commands, and miscellaneous commands. You can find an HTML version and the link to download the high resolution images at https://mathspp.com/blog/uv-cheatsheet.

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · 10d

This was in my drafts for almost a year.

It's published now.

mathspp.com/blog/pydonts...

Functions: a complete reference | Pydon't 🐍

This article serves as a complete reference for all the non-trivial things you should know about Python functions.

mathspp.com

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · 16d

What a blast from the past!

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · 17d

I'm writing an email about how vegetarian lions relate to dataclasses.

If you subscribe quickly enough, you'll also get it.

(If you don't get it and you want to read it, reply to the welcome email and I'll forward it to you.)

Subscribe here 👉 mathspp.com/insider

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · 18d

Is this looking good?

(I'm turning my “uv cheatsheet” blog post into an actual cheatsheet you can download.)

uv cheatsheet with some useful commands to work with and manage tools. The cheatsheet shows two main sections, one with two commands for one-off tool execution based on uvx and a section with 5 commands to manage “permanent” tool installation based on "uv tool install" and other "uv tool" subcommands. All commands taken from https://mathspp.com/blog/uv-cheatsheet#managing-tools

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · 19d

Today I learned that around 4500 thousand years ago Egyptians already had 30 different types of bread.

I can't name 30 types of bread right now!

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · 23d

I only started using the word “yield” in my spoken and written English after learning about generators in Python! 🐍

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · Sep 12

Maybe better is to use str.isalpha?

sum(is_alpha for is_alpha, _ in groupby(my_string, str.isalpha))

(Of course all our solutions imply a slightly different definition of “word”.)

cc @ax3man1ac.online

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · Sep 8

I'm glad I could help :D

Rodrigo Girão Serrão 🐍🚀 @mathspp.com · Sep 6

It contains the commands and options that I use more often.

You can take a look here 👇 and let me know if I missed an important command!

mathspp.com/blog/uv-chea...

uv cheatsheet

Cheatsheet with the most common and useful uv commands to manage projects and dependencies, publish projects, manage tools, and more.

mathspp.com

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · Sep 6

Yesterday was the last day of the intermediate Python course cohort and we talked about packaging.

Folks were having so much fun using @crmarsh.com's uv to manage their toy projects and to package & publish them!

To share the joys of uv with even more people, I created a small uv cheatsheet:

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · Sep 5

Oh yeah exactly. I should've read this comment too before replying to the other 🤣

Rodrigo Girão Serrão 🐍🚀 @mathspp.com · Sep 5

The previous methods also don't split on punctuation 🤷

1

Rodrigo Girão Serrão 🐍🚀 @mathspp.com · Sep 5

For a more compact approach, see this comment using `itertools.groupby` in a brilliant way:

bsky.app/profile/ax3m...

ax3man1ac @ax3man1ac.online · Sep 5

No dunder methods, uses builtins and handles unicode...

sum(not is_space for is_space, _ in groupby(s, str.isspace))

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · Sep 5

Even better!

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · Sep 5

Ahhh this is brilliant!

My take on your take:

```py
sum(not in_word for in_word, _ in groupby(s, whitespace.__contains__))
```

The opportunity to use `__contains__` directly was too good to pass up.

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · Sep 5

Here's a fun way of counting words in a string in Python.

This doesn't split the string then count, so it'll work for ridiculously large strings (e.g. files you can't load into memory)

Plus, I had fun making it branchless (i.e., without explicit `if`s) by doing arithmetic with the flag `in_word` 😅

A code snippet that shows a branchless word counter that works on a stream of data. Full code:

from string import whitespace

def wordcount(source_stream):
count = 0
in_word = False
for codepoint in source_stream:
count += (not in_word) and (codepoint not in whitespace)
in_word = codepoint not in whitespace
return count

print(wordcount("Hello, world!")) # 2

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Rodrigo Girão Serrão 🐍🚀 @mathspp.com · Sep 4

This brings back memories...

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