April 06, 2026

#476 Common themes

32 minutes

Topics covered in this episode:

Migrating from mypy to ty: Lessons from FastAPI

Oxyde ORM

Typeshedded CPython docs

Raw+DC Database Pattern: A Retrospective

Extras

Joke

Watch on YouTube

About the show

Sponsored by us! Support our work through:

Our courses at Talk Python Training

The Complete pytest Course

Patreon Supporters

Connect with the hosts

Michael: @[email protected] / @mkennedy.codes (bsky)

Brian: @[email protected] / @brianokken.bsky.social

Show: @[email protected] / @pythonbytes.fm (bsky)

Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Monday at 11am PT. Older video versions available there too.

Finally, if you want an artisanal, hand-crafted digest of every week of the show notes in email form? Add your name and email to our friends of the show list, we'll never share it.

Brian #1: Migrating from mypy to ty: Lessons from FastAPI

Tim Hopper

I saw this post by Sebastián Ramírez about all of his projects switching to ty

FastAPI, Typer, SQLModel, Asyncer, FastAPI CLI

SqlModel is already ty only - mypy removed

This signals that ty is ready to use

Tim lists some steps to apply ty to your own projects

Add ty alongside mypy

Set error-on-warning = true

Accept the double-ignore comments

Pick a smaller project to cut over first

Drop mypy when the noise exceeds the signalAdd ty alongside mypy

Related anecdote:

I had tried out ty with pytest-check in the past with difficulty

Tried it again this morning, only a few areas where mypy was happy but ty reported issues

At least one ty warning was a potential problem for people running pre-releases of pytest,

Not really related: packaging.version.parse is awesome

Michael #2: Oxyde ORM

Oxyde ORM is a type-safe, Pydantic-centric asynchronous ORM with a high-performance Rust core.

Note: Oxyde is a young project under active development. The API may evolve between minor versions.

No sync wrappers or thread pools. Oxyde is async from the ground up

Includes oxyde-admin

Features

Django-style API - Familiar Model.objects.filter() syntax

Pydantic v2 models - Full validation, type hints, serialization

Async-first - Built for modern async Python with asyncio

Rust performance - SQL generation and execution in native Rust

Multi-database - PostgreSQL, SQLite, MySQL support

Transactions - transaction.atomic() context manager with savepoints

Migrations - Django-style makemigrations and migrate CLI

Brian #3: Typeshedded CPython docs

Thanks emmatyping for the suggestion

Documentation for Python with typeshed types

Source: typeshedding_cpython_docs

Michael #4: Raw+DC Database Pattern: A Retrospective

A new design pattern I’m seeing gain traction in the software space: Raw+DC: The ORM pattern of 2026

I’ve had a chance to migrate three of my most important web app.

Thrilled to report that yes, the web app is much faster using Raw+DC

Plus, this was part of the journey to move from 1.3 GB memory usage to 0.45 GB (more on this next week)

Extras

Brian:

Lean TDD 0.5 update

Significant rewrite and focus

Michael:

pytest-just (for just command file testing), by Michael Booth

Something going on with Encode

httpx: Anyone know what's up with HTTPX? And forked

starlette and uvicorn: Transfer of Uvicorn & Starlette

mkdocs: The Slow Collapse of MkDocs

django-rest-framework: Move to django commons?

Certificates at Talk Python Training

Joke:

Neue Rich

...more

View all episodes

By Michael Kennedy and Brian Okken

4.7

212212 ratings

April 06, 2026

#476 Common themes

32 minutes

Topics covered in this episode:

Migrating from mypy to ty: Lessons from FastAPI

Oxyde ORM

Typeshedded CPython docs

Raw+DC Database Pattern: A Retrospective

Extras

Joke

Watch on YouTube

About the show

Sponsored by us! Support our work through:

Our courses at Talk Python Training

The Complete pytest Course

Patreon Supporters

Connect with the hosts

Michael: @[email protected] / @mkennedy.codes (bsky)

Brian: @[email protected] / @brianokken.bsky.social

Show: @[email protected] / @pythonbytes.fm (bsky)

Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Monday at 11am PT. Older video versions available there too.

Finally, if you want an artisanal, hand-crafted digest of every week of the show notes in email form? Add your name and email to our friends of the show list, we'll never share it.

Brian #1: Migrating from mypy to ty: Lessons from FastAPI

Tim Hopper

I saw this post by Sebastián Ramírez about all of his projects switching to ty

FastAPI, Typer, SQLModel, Asyncer, FastAPI CLI

SqlModel is already ty only - mypy removed

This signals that ty is ready to use

Tim lists some steps to apply ty to your own projects

Add ty alongside mypy

Set error-on-warning = true

Accept the double-ignore comments

Pick a smaller project to cut over first

Drop mypy when the noise exceeds the signalAdd ty alongside mypy

Related anecdote:

I had tried out ty with pytest-check in the past with difficulty

Tried it again this morning, only a few areas where mypy was happy but ty reported issues

At least one ty warning was a potential problem for people running pre-releases of pytest,

Not really related: packaging.version.parse is awesome

Michael #2: Oxyde ORM

Oxyde ORM is a type-safe, Pydantic-centric asynchronous ORM with a high-performance Rust core.

Note: Oxyde is a young project under active development. The API may evolve between minor versions.

No sync wrappers or thread pools. Oxyde is async from the ground up

Includes oxyde-admin

Features

Django-style API - Familiar Model.objects.filter() syntax

Pydantic v2 models - Full validation, type hints, serialization

Async-first - Built for modern async Python with asyncio

Rust performance - SQL generation and execution in native Rust

Multi-database - PostgreSQL, SQLite, MySQL support

Transactions - transaction.atomic() context manager with savepoints

Migrations - Django-style makemigrations and migrate CLI

Brian #3: Typeshedded CPython docs

Thanks emmatyping for the suggestion

Documentation for Python with typeshed types

Source: typeshedding_cpython_docs

Michael #4: Raw+DC Database Pattern: A Retrospective

A new design pattern I’m seeing gain traction in the software space: Raw+DC: The ORM pattern of 2026

I’ve had a chance to migrate three of my most important web app.

Thrilled to report that yes, the web app is much faster using Raw+DC

Plus, this was part of the journey to move from 1.3 GB memory usage to 0.45 GB (more on this next week)

Extras

Brian:

Lean TDD 0.5 update

Significant rewrite and focus

Michael:

pytest-just (for just command file testing), by Michael Booth

Something going on with Encode

httpx: Anyone know what's up with HTTPX? And forked

starlette and uvicorn: Transfer of Uvicorn & Starlette

mkdocs: The Slow Collapse of MkDocs

django-rest-framework: Move to django commons?

Certificates at Talk Python Training

Joke:

Neue Rich

...more

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#476 Common themes

More shows like Python Bytes

The Changelog: Software Development, Open Source

The a16z Show

Daily Tech News Show

Software Engineering Daily

Talk Python To Me

Super Data Science: ML & AI Podcast with Jon Krohn

NVIDIA AI Podcast

Syntax - Tasty Web Development Treats

Tech Brew Ride Home

Practical AI

The Real Python Podcast

No Priors: Artificial Intelligence | Technology | Startups

Latent Space: The AI Engineer Podcast

This Day in AI Podcast

The AI Daily Brief: Artificial Intelligence News and Analysis