Farshid/Ashouri

Notes on software engineering

Archive / page 9

161–180 of 547 posts, newest first.

  1. 2025

  2. Session-scoped temporary directories in pytest

    I habitually use the fixture in pytest to get a temporary directory that will be cleaned up after each test, but that doesn't work with - which can be used to ensure an expensive fixture is run only…

    TIL pytest
    1 min read

  3. SQLite pragma_function_list()

    The SQLite table-valued function returns a list of functions that have been registered with SQLite, including functions that were added by extensions. Here's how to interpret its output.

    TIL sqlite
    3 min read

  4. Vega-Lite bar charts in the same order as the data

    I've been puzzling over this one for a couple of years now, and I finally figured out the solution. The Vega-Lite charting library can generate bar charts using a JSON definition that looks like this…

    TIL vega
    1 min read

  5. Generating OpenAPI specifications using GPT-3

    I wanted to start playing around with OpenAPI. I decided to see if I could get GPT-3 to generate the first version of a specification for me.

    openapi api gpt-3 ai code-generation
    1 min read

  6. How to run MediaWiki with SQLite on a macOS laptop

    Today I got curious about how MediaWiki records page history, so I started digging around and in the process figured out how to run it against a SQLite database on my macOS laptop!

    mediawiki sqlite macos php web-server
    2 min read

  7. Introspecting Python function parameters

    For https://github.com/simonw/datasette/issues/581 I want to be able to inspect a Python function to determine which named parameters it accepts and send only those arguments.

    TIL python
    1 min read

  8. Recovering data from AWS Lightsail using EC2

    I ran into problems with my AWS Lightsail instance: it exceeded the CPU burst quota for too long and was suspended, and I couldn't figure out how to un-suspend it.

    TIL aws
    2 min read

  9. Async fixtures with pytest-asyncio

    I wanted to use a fixture with that was itsef as function, so that it could execute statements. Since I'm using a file containing I had to use the fixture to get this to work.

    pytest asyncio python testing fixtures
    1 min read

  10. Downloading MapZen elevation tiles

    Via Tony Hirst I found out about MapZen's elevation tiles, which encode elevation data in PNG and other formats.

    gis elevation tiles data-download cli
    1 min read

  11. Testing things in Fedora using Docker

    I attempted to replicate the bug in a Fedora container using Docker, by running this command: This downloaded the official image and dropped me into a Bash shell.

    TIL docker
    1 min read

  12. How streaming LLM APIs work

    I decided to have a poke around and see if I could figure out how the HTTP streaming APIs from the various hosted LLM providers actually worked. Here are my notes so far.

    llm api streaming openai anthropic
    2 min read
  13. 2024

  14. Combining CTEs and VALUES in SQLite

    Here's how to use SQLite's syntax with a CTE to create a temporary table that you can then perform joins against in a query: Try that here.

    sqlite sql cte database
    1 min read

  15. Adding project links to PyPI

    I spotted a neat looking project links section on https://pypi.org/project/ExifReader/ Turns out that's added using a key in setup.py, e.g.

    pypi python packaging setup.py web-development
    1 min read

  16. Calculating the size of a SQLite database file using SQL

    I learned this trick today while browsing the code of Blacklite, a neat Java library for writing diagnostic logs to a SQLite database.

    sqlite sql database cli bash
    1 min read

  17. Attaching a bash shell to a running Docker container

    Use to find the container ID: $ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 81b2ad3194cb alexdebrie/livegrep-base:1 "/livegrep-github-re…" 2 minutes ago Up 2 minutes compassionate…

    docker cli bash containers
    1 min read

  18. Bulk fetching repository details with the GitHub GraphQL API

    I wanted to be able to fetch details of a list of different repositories from the GitHub GraphQL API by name in a single operation.

    github graphql api repositories cli
    1 min read

  19. Convert a datetime object to UTC without using pytz

    I wanted to convert a datetime object (from GitPython) to UTC without adding the dependency.

    python datetime utc timezone git
    1 min read

  20. Querying the GitHub archive with the ClickHouse playground

    Via this comment on Hacker News I started exploring the ClickHouse Playground. It's really cool, and among other things it allows CORS-enabled API hits that can query a decade of history from the…

    TIL clickhouse
    2 min read

  21. Running multiple servers in a single Bash script

    I spotted this script that starts the opendream appication running both a Python server and a script and it intrigued me - was it this easy to have a single Bash script run two servers?

    TIL bash
    1 min read

  22. Signing and notarizing an Electron app for distribution using GitHub Actions

    I had to figure this out for Datasette Desktop. Pay for an Apple Developer account First step is to pay $99/year for an Apple Developer account.

    TIL electron
    4 min read