Trey Hunner

@trey

Python & Django team trainer I help folks sharpen their Python skills with 🐍🍪 I also blog at & run YIMBY. 95% vegan.

210 Siguiendo4029 Seguidores1904 Publicaciones

Bluesky

¿Es tu perfil?Reclámalo y trey.dirty.social es tuyo.Reclamar perfil

Trey Hunner@trey· 7d

Apparently Claude users get 3 free credits to try "/code-review ultra". I spend 2 of my 3 free credits on the same PR and got the same results both times. I feel like each of these results were a review of Anthropic's code than of my own. 🤔

Trey Hunner@trey· 14d

Python Tip #212 (of 365): Use any() and all() to check a condition across every item in an iterable 🧵 This: any_negative = False for n in numbers: if n < 0: any_negative = True break Can be rewritten as this: any_negative = any(n < 0 for n in numbers) #Python #DailyPythonTip

all_good = True
for item in iterable:
if not condition(item):
all_good = False
break

Can be rewritten as:

all_good = all(
condition(item)
for item in iterable
)

Also...

any_good = False
for item in iterable:
if condition(item):
any_good = True
break

Can be rewritten as:

any_good = any(
condition(item)
for item in iterable
)

Trey Hunner@trey· Jul 11

New daily game I've been enjoying hankgreen.com/smush · Jul 11 852 pts · PERFECT 💯 · 2-day streak 🥞🥞🥞 🥞⭐🥞 🥞🥞🥞

Trey Hunner@trey· Jun 26

My closest match doesn't surprise me. I would have been very surprised if I was categorized as a "doomer".

Trey Hunner@trey· May 13

#PyConUS #Whereabouts

A map of the PyCon US 2026 convention center in Long Beach with 5 red pins on it

Trey Hunner@trey· May 3

I made it so that once I'm expected to remember the location of a country for over 3 weeks, Whereabouts.Earth will make a confetti explosion where the bits of confetti are made of the flags of the countries I now remember so well! 🎊🇦🇶 I've been having fun making features that bring me joy. 💖

Trey Hunner@trey· Apr 25

But I would recommend using functools.cached_property instead. With @cached_property the value is computed once, then cached as a regular attribute. The first access does the work. Every access after that is instant. pym.dev/p/2mjp9/

from functools import cached_property
from pathlib import Path

class FileStats:
def __init__(self, filename):
self.path = Path(filename)

@cached_property
def line_count(self):
with open(self.path) as file:
return sum(1 for line in file)

Trey Hunner@trey· Apr 25

You might be tempted to manually cache a computed value... pym.dev/p/229fd/

from pathlib import Path

class FileStats:
def __init__(self, filename):
self.path = Path(filename)

@property
def line_count(self):
if not hasattr(self, "_line_count"):
with open(self.path) as file:
self._line_count = sum(1 for line in file)
return self._line_count

Trey Hunner@trey· Apr 25

A @property recomputes its value every time it's accessed. That's fine for computing values that should stay synced each time the attribute is accessed. But if the computation is expensive, you might not want to redo it every time. pym.dev/p/24n3p/

from pathlib import Path

class FileStats:
def __init__(self, filename):
self.path = Path(filename)

@property
def line_count(self):
with open(self.path) as file:
return sum(1 for line in file)

Trey Hunner@trey· Apr 22

Announcing whereabouts.earth for the second time today, this time with a video for those who'd prefer to watch me use it than try it out. I've really been enjoying sharing this with folks today. Happy #EarthDay all! 🌍

Trey Hunner@trey· Apr 14

I love playing games in hotel lobbies during @pycon.us. It's hard to think of someone as an unapproachable stranger when you've spent 20 minutes playing a game in a small group with them. I plan to play games in The Westin lobby during #PyConUS at least a couple nights. See you at The Westin?

5 tables and a bunch of chairs at a slightly snake-like bench in lobby of The Westin Long Beach, where board games will be played

Trey Hunner@trey· Mar 22

A Magritte moment from @davepeck.org during the last talk of #PyCascades on t-strings

Trey Hunner@trey· Mar 21

Some big ideas in @lukasz.langa.pl's keynote at #PyCascades this morning

The universe is great at forgetting stuff

You shouldn't have to bear the burden of systemic change

I'm not a radical I just care about user agency

Trey Hunner@trey· Feb 23

Python Tip #54 (of 365): Copy-paste your way into comprehensions. 🧵 Have a "for" loop that loops over one list to build up another? You can probably copy-paste your way from a loop into a comprehension. #Python #DailyPythonTip

Trey Hunner@trey· Feb 12

When your UI makes a user think "eh there's a 75% chance that this is the right button", something has gone wrong.

A box that says "Are you sure you want to cancel your appointment?" and the buttons are "Cancel Appointment" and "Save Appointment".

Trey Hunner@trey· Dec 3

Apparently I'm pretty consistent with what I talk about on Bluesky. 😅 ... also I use that 😅 emoji a lot My most-used words in 2025 were: 1. "python" (360×) 2. "code" (43×) 3. "function" (39×) 4. "pyconus" (36×) 5. "morsels" (35×) See which words you used the most here: anisota.net/harvest

A word cloud showing "python" much bigger than anything else

Trey Hunner@trey· Nov 28

Mara's ship from She-Ra and the Princesses of Power

The space ship from Octavia Butler's Dawn (it wasn't described in detail in the book and I don't think this rendering is right but that's what it supposedly is)

Wayfarer from A Long Way to a Small Angry Planet

Trey Hunner@trey· Oct 27

Increased diversity in communities usually comes from active outreach work. PyCon's has a partially blinded talk selection processes. If 300 people submit talks and 294 are men, then 98% of talks will likely be from men. If 500 people submit talks and 394 are men, then ~79% will likely be by men.

A tweet from Jessica McKellar on May 30, 2016:
Hello from your @PyCon Diversity Chair. % PyCon talks by women: (2011: 1%), (2012: 7%), (2013: 15%), (2014/15: 33%), (2016: 40%). #pycon2016

Trey Hunner@trey· Oct 23

When you type code into the Python REPL, it will be colorized as you type it. Read more 👉 https://trey.io/flfwr9 #Python

Trey Hunner@trey· Oct 14

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· Jul 4

This is such a weird email to get from the Social Security Administration... 🙁

Email from the Social Security Administration:

The Social Security Administration (SSA) is celebrating the passage of the One Big, Beautiful Bill, a landmark piece of legislation that delivers long-awaited tax relief to millions of older Americans.

The bill ensures that nearly 90% of Social Security beneficiaries will no longer pay federal income taxes on their benefits, providing meaningful and immediate relief to seniors who have spent a lifetime contributing to our nation's economy.

“This is a historic step forward for America’s seniors,” said Social Security Commissioner Frank Bisignano. “For nearly 90 years, Social Security has been a cornerstone of economic security for older Americans. By significantly reducing the tax burden on benefits, this legislation reaffirms President Trump’s promise to protect Social Security and helps ensure that seniors can better enjoy the retirement they’ve earned."

The new law includes a provision that eliminates federal income taxes on Social Security benefits for most beneficiaries, providing relief to individuals and couples. Additionally, it provides an enhanced deduction for taxpayers aged 65 and older, ensuring that retirees can keep more of what they have earned.

Social Security remains committed to providing timely, accurate information to the public and will continue working closely with federal partners to ensure beneficiaries understand how this legislation may affect them.

Trey Hunner@trey· Jul 1

But PEP8 (the official Python style guide) recommends putting binary operators (operators that go in between two values, like and and or) at the beginning of each line, for the sake of readability. Read more 👉 https://trey.io/f98u5c #Python

Trey Hunner@trey· Jul 1

Working with file paths in Python? (splitting, joining, navigating, etc.) Check out #Python's pathlib module. It's great for splitting/joining paths, finding files by filename patterns, renaming files, and more. pym.dev/pathlib-module

Table showing 10 path-related tasks, including a short pathlib snippet that performs that task, as well as example output. This is the cheat sheet table from https://pym.dev/pathlib-module/#cheat-sheet

Trey Hunner@trey· Jun 14

I decided to just quote the oath of office on mine. #NoKings

White poster board that reads "PRESERVE PROTECT & DEFEND the CONSTITUTION" in red, white (black outline), blue, and black

Trey Hunner@trey· May 18

Enjoyed this morning's #PyConUS keynote from @tfmfm.bsky.social & @geoffhing.bsky.social on a very important use for #Python. is.gd/tmppyconus

Trey Hunner@trey· May 16

Hello #PyConUS attendee who I have probably never met! If you would like to say hello, please message me while we're both in the same city together! I'm on Signal at trey.02. More contact details at trey.io/pycon Also I have Python Morsels stickers! I'd love to give you one. 🐍🍪

A sticker of an adorable green snake hugging a vegan chocolate chip cookie with the text "Python Morsels" below it.

Trey Hunner@trey· May 16

When chatting in the hallway at PyCon, try leaving a gap for someone else to join the conversation. #PyConUS

Hallway Track!

The Pac-Man rule

When standing in a group of people, always leave room for 1 person to join your group.

Trey Hunner@trey· May 16

We're playing Cabo and other games in the Westin lobby. Come join us #PyConUS folks!

Trey Hunner@trey· May 15

Don't miss out on the rooftop track at #PyConUS this year! 🌳 There are a couple dozen of us out here eating lunch right now and I many folks will be hanging out here over the next few days of @pycon.us. The rooftop track is like the hallway track, but with a great view! 🖼️

Eugene, Marie, Simon, and Yngve sitting at a table chatting about weird and fun things only vaguely related to PyCon

Trey Hunner@trey· Apr 27

Hey #NBPy folks! 👋 I'm flying out tonight, so if you would like a Python Morsels sticker, hug, or a chat, find me today. I would love to say hey to you if we haven't met yet! If you would like a Python Morsels sticker today PLEASE ask me for one (or 10!). I brought so many! 🐍🍪😅