Diego J.
@diegojromerolopez.bsky.social
Software engineer. Python, Ruby, Typescript. Blog: https://diegojromerolopez.github.io/
Hey #Python blueskyers, what's your take on static validation of Python code?
www.reddit.com/r/Python/com... 🤔
www.reddit.com/r/Python/com... 🤔
From the Python community on Reddit: What's stopping us from having full static validation of Python code?
Explore this post and more from the Python community
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December 22, 2025 at 9:18 AM
Hey #Python blueskyers, what's your take on static validation of Python code?
www.reddit.com/r/Python/com... 🤔
www.reddit.com/r/Python/com... 🤔
Now, what would happen if I leverage LLMs in a language I don't have much experience in an unknown area for me? I will come back with my findings!
December 9, 2025 at 10:10 PM
Now, what would happen if I leverage LLMs in a language I don't have much experience in an unknown area for me? I will come back with my findings!
It's been interesting to check what's the speed of coding some Python libraries with some AI support. Of course I didn't aspire to have 100% perfect code, but they have tests and they work.
The speed is an order of magnitude lower. Months are now weeks, and the weeks days.
The speed is an order of magnitude lower. Months are now weeks, and the weeks days.
December 9, 2025 at 10:04 PM
It's been interesting to check what's the speed of coding some Python libraries with some AI support. Of course I didn't aspire to have 100% perfect code, but they have tests and they work.
The speed is an order of magnitude lower. Months are now weeks, and the weeks days.
The speed is an order of magnitude lower. Months are now weeks, and the weeks days.
Second project done making extensive use of LLMs: github.com/diegojromero... a mypy extension that provides a decorator to mark functions that raise exceptions.
GitHub - diegojromerolopez/mypy-raise: A mypy extension that provides a decorator to mark functions that raise exceptions
A mypy extension that provides a decorator to mark functions that raise exceptions - diegojromerolopez/mypy-raise
github.com
December 9, 2025 at 9:53 PM
Second project done making extensive use of LLMs: github.com/diegojromero... a mypy extension that provides a decorator to mark functions that raise exceptions.
I have created this plugin for mypy: mypy-pure (github.com/diegojromero...) that provides a function decorator that enforces (partial) purity.
The development took less than 6 hours because I used LLMs.
Read my opinion about the experience: diegojromerolopez.github.io/blog/2025/12...
The development took less than 6 hours because I used LLMs.
Read my opinion about the experience: diegojromerolopez.github.io/blog/2025/12...
GitHub - diegojromerolopez/mypy-pure: A mypy extension that provides a decorator to mark functions as pure
A mypy extension that provides a decorator to mark functions as pure - diegojromerolopez/mypy-pure
github.com
December 5, 2025 at 9:28 PM
I have created this plugin for mypy: mypy-pure (github.com/diegojromero...) that provides a function decorator that enforces (partial) purity.
The development took less than 6 hours because I used LLMs.
Read my opinion about the experience: diegojromerolopez.github.io/blog/2025/12...
The development took less than 6 hours because I used LLMs.
Read my opinion about the experience: diegojromerolopez.github.io/blog/2025/12...
I've leveraged Antigravity and the Claude and Gemini models to create a #mypy plugin to signal a function as free of side-effects. The development has been much faster! Check it out!
github.com/diegojromero...
github.com/diegojromero...
December 3, 2025 at 8:53 PM
I've leveraged Antigravity and the Claude and Gemini models to create a #mypy plugin to signal a function as free of side-effects. The development has been much faster! Check it out!
github.com/diegojromero...
github.com/diegojromero...
Just heard that a person has an appointment to their doctor to the year 2999 #software #databases #errors
September 23, 2025 at 10:41 AM
Just heard that a person has an appointment to their doctor to the year 2999 #software #databases #errors
Several weeks ago I developed a package to ease the pain of instrumenting #Python code with #OpenTelemetry. Now, I have written a post in my blog explaining how to use it. Check it out!
diegojromerolopez.github.io/blog/2025/09...
diegojromerolopez.github.io/blog/2025/09...
September 16, 2025 at 8:14 AM
Several weeks ago I developed a package to ease the pain of instrumenting #Python code with #OpenTelemetry. Now, I have written a post in my blog explaining how to use it. Check it out!
diegojromerolopez.github.io/blog/2025/09...
diegojromerolopez.github.io/blog/2025/09...
Why not have a way to have automatic #OpenTelemetry instrumentation for your functions in #Python? I have created a package called otelize (pypi.org/project/otel...) that provides a decorator that creates a span for each function call.
github.com/diegojromero...
Feedback welcome!
github.com/diegojromero...
Feedback welcome!
September 6, 2025 at 11:55 AM
Why not have a way to have automatic #OpenTelemetry instrumentation for your functions in #Python? I have created a package called otelize (pypi.org/project/otel...) that provides a decorator that creates a span for each function call.
github.com/diegojromero...
Feedback welcome!
github.com/diegojromero...
Feedback welcome!
New very basic library for helping your #opentelemetry efforts in #Python: github.com/diegojromero...
August 31, 2025 at 5:02 PM
New very basic library for helping your #opentelemetry efforts in #Python: github.com/diegojromero...
Some days ago I was using #copilot for code generation and had a fragment of Queen's Bohemian Rhapsody in the test code I wanted to review. I kid you not, the AI responded by ignoring all my instructions and adding the next part of the verse.
August 31, 2025 at 4:49 PM
Some days ago I was using #copilot for code generation and had a fragment of Queen's Bohemian Rhapsody in the test code I wanted to review. I kid you not, the AI responded by ignoring all my instructions and adding the next part of the verse.
AI is pretty useful for getting the scaffolding in a programming language. Forgot how to create a decorator in #python or don't want to create to a TypedDict by hand? The AI has your back!
August 30, 2025 at 3:11 PM
AI is pretty useful for getting the scaffolding in a programming language. Forgot how to create a decorator in #python or don't want to create to a TypedDict by hand? The AI has your back!
I wrote a #python package for writing log messages with a background #thread.
It is a proof of concept but it led me to interesting new ideas and challenges, posible issues and improvements.
github.com/diegojromero...
It’s the basic premise of async functions but done without the event loop.
It is a proof of concept but it led me to interesting new ideas and challenges, posible issues and improvements.
github.com/diegojromero...
It’s the basic premise of async functions but done without the event loop.
July 11, 2025 at 3:48 PM
I wrote a #python package for writing log messages with a background #thread.
It is a proof of concept but it led me to interesting new ideas and challenges, posible issues and improvements.
github.com/diegojromero...
It’s the basic premise of async functions but done without the event loop.
It is a proof of concept but it led me to interesting new ideas and challenges, posible issues and improvements.
github.com/diegojromero...
It’s the basic premise of async functions but done without the event loop.
Do you do unit tests and integration tests in your code? Why you should be doing both? diegojromerolopez.github.io/blog/2025/06...
June 8, 2025 at 12:50 PM
Do you do unit tests and integration tests in your code? Why you should be doing both? diegojromerolopez.github.io/blog/2025/06...
Unpopular opinion: I don't like *args and **kwargs in #python.
diegojromerolopez.github.io/blog/2025/05...
diegojromerolopez.github.io/blog/2025/05...
May 18, 2025 at 5:19 PM
Unpopular opinion: I don't like *args and **kwargs in #python.
diegojromerolopez.github.io/blog/2025/05...
diegojromerolopez.github.io/blog/2025/05...
Do you read code just for pleasure? I was intrigued about how #pylint works and took a look to some rules.
What are your favorite legible software projects?
What are your favorite legible software projects?
March 16, 2025 at 7:16 AM
Do you read code just for pleasure? I was intrigued about how #pylint works and took a look to some rules.
What are your favorite legible software projects?
What are your favorite legible software projects?
Simplicity in software engineering is a must. If you do nothing against the continuous complexity increase, you will pay. For sure you will face a hurdle while extending or maintaining your software that you will not be not be able to overcome.
March 8, 2025 at 11:47 AM
Simplicity in software engineering is a must. If you do nothing against the continuous complexity increase, you will pay. For sure you will face a hurdle while extending or maintaining your software that you will not be not be able to overcome.
Some days ago I learned how to patch objects in the setUp method with #unittest in #python. I used to patch objects via the @patch decorator, but I'm starting to think this is cleaner if the same object is mocked for all the test methods.
diegojromerolopez.github.io/blog/2025/02...
diegojromerolopez.github.io/blog/2025/02...
February 13, 2025 at 6:22 PM
Some days ago I learned how to patch objects in the setUp method with #unittest in #python. I used to patch objects via the @patch decorator, but I'm starting to think this is cleaner if the same object is mocked for all the test methods.
diegojromerolopez.github.io/blog/2025/02...
diegojromerolopez.github.io/blog/2025/02...
I developed and maintain a #python package to freeze objects called gelidum (github.com/diegojromero...). I've noticed that I have a bunch of users but they haven't given me any feedback. How do you approach your users to ask them for feedback?
February 1, 2025 at 5:38 PM
I developed and maintain a #python package to freeze objects called gelidum (github.com/diegojromero...). I've noticed that I have a bunch of users but they haven't given me any feedback. How do you approach your users to ask them for feedback?
Just asked #chatgpt how to improve my #python project github.com/diegojromero... and it surprisingly gave some good points.
A new use-case for the AIs (for me): getting feedback for an open-source project.
A new use-case for the AIs (for me): getting feedback for an open-source project.
January 26, 2025 at 10:00 AM
Just asked #chatgpt how to improve my #python project github.com/diegojromero... and it surprisingly gave some good points.
A new use-case for the AIs (for me): getting feedback for an open-source project.
A new use-case for the AIs (for me): getting feedback for an open-source project.
How do you deal with #irrational people in the workplace? What is your approach to conversations with people that do not have their mind in the right place?
Some of my thoughts here diegojromerolopez.github.io/blog/2025/01...
Some of my thoughts here diegojromerolopez.github.io/blog/2025/01...
January 25, 2025 at 8:08 AM
How do you deal with #irrational people in the workplace? What is your approach to conversations with people that do not have their mind in the right place?
Some of my thoughts here diegojromerolopez.github.io/blog/2025/01...
Some of my thoughts here diegojromerolopez.github.io/blog/2025/01...
Been playing around with python a bit. type, metaclass and decorators to do a simple thing: enforce constants at class-level.
github.com/diegojromero...
This project is in pre-alpha, but it has forced me to learn and refresh some concepts, so it has some value.
github.com/diegojromero...
This project is in pre-alpha, but it has forced me to learn and refresh some concepts, so it has some value.
January 18, 2025 at 11:06 AM
Been playing around with python a bit. type, metaclass and decorators to do a simple thing: enforce constants at class-level.
github.com/diegojromero...
This project is in pre-alpha, but it has forced me to learn and refresh some concepts, so it has some value.
github.com/diegojromero...
This project is in pre-alpha, but it has forced me to learn and refresh some concepts, so it has some value.
My thoughts about technical #blogging for 10 years diegojromerolopez.github.io/blog/2024/12...
December 29, 2024 at 6:37 PM
My thoughts about technical #blogging for 10 years diegojromerolopez.github.io/blog/2024/12...
Unsure on how to add #otel to your #deno #fresh application? See my latest post about that: diegojromerolopez.github.io/blog/2024/12...
December 29, 2024 at 6:36 PM
Unsure on how to add #otel to your #deno #fresh application? See my latest post about that: diegojromerolopez.github.io/blog/2024/12...
Yesterday I wrote about some of the faulty career ladders I've seen in the software development world diegojromerolopez.github.io/blog/2024/12...
Once you have some years behind you it's funny to remember all the experiences you have had in a particular topic.
#cscareer #promotions #career
Once you have some years behind you it's funny to remember all the experiences you have had in a particular topic.
#cscareer #promotions #career
December 27, 2024 at 9:33 AM
Yesterday I wrote about some of the faulty career ladders I've seen in the software development world diegojromerolopez.github.io/blog/2024/12...
Once you have some years behind you it's funny to remember all the experiences you have had in a particular topic.
#cscareer #promotions #career
Once you have some years behind you it's funny to remember all the experiences you have had in a particular topic.
#cscareer #promotions #career