treyhunner

treyhunner, 1 day ago to random

Out of curiosity, I searched for the #PyConUS hashtag on Mastodon and Twitter and scrolled back 16 hours and started counting posts. 🤔

I counted:

87 posts on Twitter on the PyCon hashtag 🐦

134 posts on Mastodon on the PyCon hashtag 🐘

The PyCon conversations have finally moved (mostly) to Mastodon! 🙌

Not a HUGE difference, but enough that I felt like there was more activity and decided to confirm my suspicion. 💗

treyhunner, 10 months ago to python

Python 3.7 reached the end of its life today. 🎉

Here are some Python 3.8 features you can now embrace:

• cached_property
• self-documenting f-string expressions
• walrus operator
• positional-only args
• passing dictionaries to reversed()

A few other favorites of mine:

• math.‍prod (like sum, but for multiplication)
• clearing the REPL with globals().clear()... this would break things in Python 3.7!
• argparse's add_argument method has an "extend" action

#Python

treyhunner, 1 month ago to python

My students often ask me whether they can see a list of every dunder method that #Python has. I've been meaning to compile a categorized list for years.

I finally did it.

Here's every dunder method in Python... all 115 of them! 🤯

https://pym.dev/every-dunder-method/

treyhunner, 2 months ago (edited 2 months ago) to random

I've just updated my ~/.config/pip/pip.conf & my dotfiles repo to disallow pip installing outside virtual environments! 🎉

TIL 2 things about #Python's pip:

1. pip has a config file. If I ever knew this, I'd forgotten.

2. pip has an option that stops it from working outside of a virtual environment!

This is great for me because I use pipx and NEVER do global pip installs.

Info: https://unix.stackexchange.com/questions/492041/is-there-a-way-to-disable-pip-outside-of-a-virtual-environment

Thanks to @hynek's excellent uv video for this semi-related TIL 💜 https://youtu.be/_FdjW47Au30?si=5iRmMuWMdewRubNt

treyhunner, 9 days ago (edited 9 days ago) to python

Python 3.13 beta 1 just landed.

My favorite new feature is the new #Python REPL.

Honestly, this may be my favorite feature since f-strings.

My write up on the differences between old and new REPLs:
https://treyhunner.com/2024/05/my-favorite-python-3-dot-13-feature/

treyhunner, 10 months ago to python

Python Community News released videos for 13 of the 15 nominees running for @ThePSF board of directors right now.

If you haven't voted yet, check these videos to hear each nominee answer a few questions.

https://www.youtube.com/playlist?list=PL9MuO5r3rpXJ5k-NEI3Gc6S3CZU7mGwvP

Thanks @kjaymiller & @jonafato for putting these together.

#Python #PSF

treyhunner, 6 months ago to python

The ruff #Python linter can now replace all my favorite linting & auto-formatting tools.

For many months, I've used these commands:

• ruff check . # lint
• ruff check --fix . # auto-fix

Now I also use:

• ruff format . # A Black equivalent

Instead of flake8 or pylint, I either use the ruff defaults (similar to flake8) or I enable the "PL" rules for pylint.

The --fix argument will auto-fix many linting errors too (similar to autopep8, autoflake, isort, pyupgrade, etc.).

treyhunner, 20 days ago to python

I attended my first Python conference 10 years and 10 days ago.

I wrote a meandering and nostalgic blog post (complete with links to old group selfie tweets) about the last 10 years of being part of the wider #Python community.

I'm really grateful I decided to attend PyCon 2014 and that I came back for PyCon 2015 and went to DjangoCon 2015 as well.

#PyCon #PyConUS

https://treyhunner.com/2024/04/10-years-of-python-conferences/

treyhunner, 7 months ago to random

I've told my students that even though comprehensions are faster than loops, much of a loop's slowness was due to append method lookup time.

I just discovered that my knowledge is outdated.

Since Python 3.11, this "append" optimization isn't any faster! https://pym.dev/p/2gzr3/

This is thanks to PEP 569, which made method call lookups and lots of other stuff a bit faster.

https://docs.python.org/3/whatsnew/3.11.html#pep-659-specializing-adaptive-interpreter

More context (someone else noticed this a few days before I did): https://discuss.python.org/t/append-mylist-append-optimization-now-harmful/36028

treyhunner, 6 months ago (edited 6 months ago) to random

I'm doing something I've never done: I'm offering lifetime access to #Python Morsels. ♾️

You can get access to all screencasts, articles, and exercises I publish for the price of a 2 year subscription. 🐍

This sale ends on November 27, 2023 💸

https://pym.dev/lifetime-access-sale

treyhunner, 5 months ago to python

I'm offering lifetime access to Python Morsels from now through Monday. 🐍

If you're a frequent #Python user and you plan to use it for at least a few more years, I highly recommend this deal. 💖

More details at https://pym.dev/lifetime-access-sale

video/mp4

treyhunner, 10 months ago to django

A controversial #Django topic:

class-based views (CBVs) or function-based views (FBVs)? 🤔

I started with function-based views, but after a few years of using Django I pretty much moved fully to class-based views. Both have pros & cons (and vocal advocates).

The Django docs introduce FBVs first and then discusses CBVs as well as Django's built-in "generic class-based views" (GCBVs).

Django-REST-Framework also makes heavy use of CBVs.

But class-based views CAN be confusing.

#DjangoJune

treyhunner, 1 day ago to random

What tips do you have for folks thinking of trying out Mastodon during #PyConUS this year?

3 of my tips:

1. Follow the #PyConUS hashtag (yes you can follow a hashtag just like following a profile!)
2. If you post and realize you forgot the #PyConUS hashtag, don't delete your post. Just edit it!
3. Consider following the #PyCon hashtag also. Many folks use it without realizing that #PyConUS is the official one.

What tips do you have?

treyhunner, 1 year ago to programming

I always love chatting with Jay Miller. 💖

@kjaymiller interviewed me at #PyConUS during the first day of sprints.

We chatted about:

• interacting with folks without discussing #Python
• playing (my version of) #Cabo
• how great chatting with other teachers & learners is
• getting feedback and validation
• contributing during sprints

Jay also interviewed @AlSweigart @pythonbynight, @ericholscher, @sethmlarson, Aseda Addai-Deseh, and @freakboy3742. Check the playlist!

https://www.youtube.com/watch?v=HzuXmzhFJ6Y&list=PL9MuO5r3rpXK_dfGDIlKqjiKZ5_YqZgxj&index=3

treyhunner, 2 months ago to python

What are some of your favorite analogies that work well in #Python?

Or... what's an analogy that doesn't work so well in Python?

Some examples that I often reach for:
• Lists as a stack of plates
• Duck typing versus checking the DNA of an animal
• Private variables in Python as a closed but unlocked door
• Iterators as PEZ dispensers
• super().my_method(*a, **k) as a form of "passing the buck"

treyhunner, 3 months ago (edited 3 months ago) to python

I'm drafting a #Python tip email about time complexity and I can't help but reference Ned Batchelder's Big-O talk/article. 💖

In particular, I love the stickiness of this succinct rhyme:

> How code slows as data grows

That phrase is just such an excellent summary of time complexity & Big O. Thanks @nedbat! 👏

https://nedbatchelder.com/text/bigo.html

treyhunner, 24 days ago to python

When I say "lightning talks" is there a particular #Python conference lightning talk or lightning talk session that comes to mind for you?

Doesn't need to be your favorite talk/session, but just one that comes to mind.

Link me to it!

Thanks @ehmatthes for inspiring this question.

treyhunner, 5 months ago (edited 5 months ago) to python

You're about to start a new pip-installable #Python project.

What do you do?

treyhunner, 5 months ago to python

If you're a #Python user and a lifelong learner, I have a sale for you. 🐍

From now through next Monday, I'm offering lifetime access to Python Morsels for the price of a 2-year subscription. 💸

Every week, I'll recommend an exercise that will push you just outside your comfort zone. 🧪

Feel free to message/email me if you have any questions. 💖

https://pym.dev/lifetime-access-sale/

treyhunner, 6 months ago to python

Need to read a CSV file in Python?

You can use the csv module from the #Python standard library!

The reader class will convert the CSV rows into lists.

The DictReader class will convert the CSV rows into dictionaries (treating the first row as headers).

https://youtu.be/9AJvH-nM5zs?si=RBCxIwjlkCKlmepV

treyhunner, 2 days ago to random

Don't overlook the the "outdoor space" doors in the conference center at
@pycon this year!

The first space looks inviting and it is! ✅

The second space looks like it's just concrete stairs 🤔

... but there's a great view up those stairs, including plants & benches! 😮🌿🪻🐝

You can also take the elevator to 4 or 4R to get there.🛗

#PyConUS #PyCon

Rooftop with plants and benches
View of the river and bridges

treyhunner, 8 days ago to random

Coming to @pycon next week?

If this is your first #PyConUS, join us for the Newcomer's Orientation before the opening reception on Thursday!

https://us.pycon.org/2024/events/newcomer-orientation/

Also see my post on how to have a great first PyCon as well @brainwane's post for folks who've already attended a conference before.

https://treyhunner.com/2018/04/how-to-make-the-most-of-your-first-pycon/
https://www.harihareswara.net/posts/2023/your-first-pycon-but-not-your-first-convention/

treyhunner, 4 months ago to django

The most important Django resources I can recommend: djangopackages.org and awesomedjango.org

Read the full article: Django June 2023
▸ https://trey.io/duqrY0

#Django

treyhunner, 4 months ago (edited 4 months ago) to django

I just watched @pythonbynight's #DjancoCon talk on the current state of #HTMX in #Django and now I'm turn between trying out django-render-block, forge-htmx, and @carlton's django-template-partials.

https://github.com/clokep/django-render-block
https://github.com/forgepackages/forge-htmx
https://github.com/carltongibson/django-template-partials/

Anyone written a blog post or made a repository attempting to write the same HTMX-powered view(s) using all 3 of those packages? I'd love to compare and contrast them more directly.

Here's the talk:

https://www.youtube.com/watch?v=J0xES5wGjik

treyhunner, 2 days ago to random

What are some of your favorite @pycon tips? 💡

Reply and tag #PyConUS. 💖