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Trey Hunner @trey.io · 5h

If you've seen the various string strip methods, you might be wondering, how are removeprefix and removesuffix any different from lstrip and rstrip? Read more �‘‰ https://trey.io/dley4p #Python

Trey Hunner @trey.io · 16h

uv supports an exclude-newer feature as a sort of "pin to versions available as of a specific date" feature!

I'm wondering whether I should add support for that OR simply enable it by default. 🤔

If you have thoughts, I'd love to hear them: github.com/treyhunner/u...

Consider pinning requirements to the current timestamp · Issue #5 · treyhunner/uvrs

uv supports an exclude-newer field in a tool.uv section to improve reproducibility of scripts. I didn't know about this and know I'm considering adding it to all of my scripts as a sort of very sim...

github.com

Trey Hunner @trey.io · 21h

Yes. Although "init" adds a shebang line that uv doesn't add and also sets an executable bit on the file.

Trey Hunner @trey.io · 22h

Tomorrow's weekly Python tip email will include em dashes.

Homegrown em dashes.

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Trey Hunner @trey.io · 23h

Have a #Python script that needs a third-party library to run?

uv can help! And I made a small wrapper to makes things even easier.

Install it:
uv tool install uvrs

And add a shebang + dependency:
uvrs fix ./name.py
uvrs add ./name.py requests

Then you can run it, no venv-worry needed:
./name.py

GitHub - treyhunner/uvrs: Create and run uv scripts with POSIX standardized shebang line

Create and run uv scripts with POSIX standardized shebang line - treyhunner/uvrs

github.com

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Trey Hunner @trey.io · 1d

Neat little Python library.

If you have uv installed and want try out any of the demos:

uv run --with buttonpad python -m buttonpad

Al Sweigart @alsweigart.bsky.social · 1d

I've finished a presentable version of ButtonPad, but simple GUI framework for Python desktop apps. Built on tkinter so it has no major dependencies, it lets you make a grid of buttons/labels/images/text boxes (like a streamdeck or drum machine). pypi.org/project/Butt...

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Trey Hunner @trey.io · 1d

So when writing a file using Python's csv module, you're expected to always specify newline="" when opening the file you're writing to, to make sure that you don't accidentally double up your carriage returns on Windows. Read more �‘‰ https://trey.io/ca0qyn #Python

Trey Hunner @trey.io · 1d

I've been happily using Kagi for over a year.

I used Ecosia before it and Duck Duck Go for years before that.

If you're looking for a search engine where your eyes aren't the product, try Kagi out.

This is not an ad.

Laurie Voss @seldo.com · 1d

Google has, yet again, found a way to make it harder to identify which links are real and which are ads. www.theverge.com/tech/798901/...

Google will let you hide sponsored results in search — after you’ve seen them

At least you can collapse them now.

www.theverge.com

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Trey Hunner @trey.io · 1d

It became much more possible when 3.13 was released last year.

I've really enjoyed being able to tweak things to better fit my REPL usage needs.

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Trey Hunner @trey.io · 1d

Last week I wrote about how I customize my #Python REPL to add additional keyboard shortcuts.

It's hacky, but I've been really satisfied with the result.

Handy Python REPL Modifications

I find myself in the Python REPL a lot. I open up the REPL to play with an idea, to use Python as a calculator or quick and dirty text parsing tool, …

treyhunner.com

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Reposted by Trey Hunner

Hugo van Kemenade @hugovk.dev · 2d

Some stats from core dev @hauntsaninja.bsky.social showing Python 3.14 had more usable packages on day 1 than other recent releases.

New releases of #cibuildwheel adding 3.14 as optional and then default also helped.

discuss.python.org/t/stats-on-p...

#Python #Python314 #wheels #stats #PyPI

Python adoption chart showing number of packages definitely supporting 3.11 to 3.14 against time since final release, starting at -400, going to +1000 days, where available. All curves follow a similar trend, but newer ones have more available earlier. The trend is fairly flat at -400, but around -300 start picking up, and at day zero all increase a lot.

Similar to the previous chart, but Python adoption amongst packages with version specific wheels. Here, the new versions have much greater adoption than earlier ones.

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Trey Hunner @trey.io · 2d

Same goes for:

• "None" in an explicit "return None"
• "start=" in enumerate(..., start=1)
• "mode=" in open(... mode="wt")
• "else" in an if-else that returns, assuming it's clearer that way (pym.dev/unnecessary-...)

Many bits of #Python's syntax are "technically unnecessary" but useful.

Unnecessary else statements

When your function ends in an else block with a return statement in it, should you remove that else?

pym.dev

Trey Hunner @trey.io · 2d

Compare these 2:

for item in counts.keys(): ...
for item in counts: ...

The first one is more explicit and more readable. Yes, the keys method call is technically redundant, but it's clearer, especially to new Pythonistas.

This #Python tip (gripe?) brought to you by an overeager linter rule.

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Trey Hunner @trey.io · 2d

Also, if you've ever wished that Python's unittest module included nicely colored output like pytest, it does now. Read more �‘‰ https://trey.io/flfwr9 #Python

trey.io

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Trey Hunner @trey.io · 4d

I made a uvrs tool as a wrapper around uv's "init --script", "run --script", "add --script", and "remove --script".

It adds a suitable shebang line and sets an executable bit automatically. There are open issues in uv noting why this isn't the default behavior yet. Hopefully it will be eventually!

GitHub - treyhunner/uvrs: Create and run uv scripts with POSIX standardized shebang line

Create and run uv scripts with POSIX standardized shebang line - treyhunner/uvrs

github.com

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Trey Hunner @trey.io · 5d

In this new blog post, I explain why my PYTHONSTARTUP file has grown into a PyPI package.

Let's use sys.append on REPL startup to access a wrapper around an undocumented/private #Python library which monkey patches Python to add custom keyboard shortcuts and customize our syntax highlighting.

Handy Python REPL Modifications

I find myself in the Python REPL a lot. I open up the REPL to play with an idea, to use Python as a calculator or quick and dirty text parsing tool, …

treyhunner.com

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Trey Hunner @trey.io · 5d

Thanks!

Trey Hunner @trey.io · 5d

I'm always in the REPL, so the syntax highlighting was worth it on its own for me.

I treated as an infomercial for Python 3.14, since everyone wished they had the same colored syntax that my REPL had. 🌈

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Trey Hunner @trey.io · 5d

For more on Python's pathlib module, see my recent talk from #PyBeach 2025: trey.io/PyBeach2025

And also some pathlib cheat sheet-style tables in this article: pym.dev/pathlib-module

pathlib: Why and How to Use It

trey.io

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Trey Hunner @trey.io · 5d

Do it!

I've been using it to run my courses for months now. Only hit a weird bug one time (and it had already been fixed by the time I hit it).

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Trey Hunner @trey.io · 5d

One of my favorite features in Python 3.14 is that pathlib.Path objects now have copy and move methods. Read the full article: Python 3.14's best new features �¸ https://trey.io/flfwr9 #Python

trey.io

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Trey Hunner @trey.io · 5d

Due to the laziness of reversed(), if we were to pass it lots of items (say 100,000 items) we won't end up copying the iterable that we gave it. Read more �‘‰ https://trey.io/ur7l4g #Python

trey.io

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Trey Hunner @trey.io · 5d

Not just on newer versions, but all supported versions since Python 2.7 and 3.5 were end-of-life'd in 2020.

If f-strings are valid Python syntax, dictionaries are ordered.

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Trey Hunner @trey.io · 6d

I guess it's October because this office hour was scary... 👻

We discussed:

• Infinitely recursive data structures 🧟
• __new__ vs. metaclass's __call__ vs. class decorators vs. function with __mro_entries__ 👹
• ways to create a context manager 🔮
• pth files 🧌
• modifying sys.path in PYTHONSTARTUP 🦹🏻

Trey Hunner @trey.io · 6d

My #Python office hours start in less than 1 hour.

It's casual and you can participate as much or as little as you like.

Come as you are and hopefully you'll learn something by the end.

Python Morsels Office Hours

Join Trey for 13 weekly office hour sessions. Free for everyone!

pym.dev

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