Posts tagged: python

> A command-line utility for taking automated screenshots of websites

Daaaang, this is such an elegantly simple way to get web screenshots with a cli. I was literally up and running with two commands on my arch linux machine (which it warned was unsupported by playwright).

pip install shot-scraper # Now install the browser it needs: shot-scraper install shot-scraper waylonwalker.com shot-scraper https://datasette.io/ shot-scraper https://datasette.io/ -h 1280 -w 1920 shot-scraper https://datasette.io/ -h 480 -w 720 shot-scraper shot --selector '#posts' https://thoughts.waylonwalker.com/post/89

Note shot-scraper https://datasette.io/ is a full length screenshot of the entire page.

Oh and its pretty dang fast, let alone the setup time, this crushes on startup time in my attempts to use a headless browser in the past.

An interesting way to build automatically annotaatd docs with arrows pointing to elements on a webpage.

Creating many to many relationships with sqlmodel requires a LinkTable Model. The link model will keep track of the linked id’s between each of the models.

I went down the route of leveraging the json-enc extention in htmx, but later realized that this completely breaks browsers/users who do not wish to use javascript. While most of the web would feel quite broken with javascript disabled, I don’t want to contribute to that without good reason.

Taking a second look into this issue, rather than using json-enc, and using as_form to get form data into a model keeps the nice DX fo everything being a pydantic model, but the site still works without js. with js htmx kicks in, you get a spa like experience by loading partials onto the page, and without, you just get a full page reload.

copied from Aug 8, 2023

How to enable debug mode in pywebview.

After a nasty time with alembic upgrades, thoughts is about to get a new users table. This may have came from incorrectly setting up alembic for sqlite from the start, but I was able to fix the issue with this GitHub issue.

alembic sqlite ValueError: Constraint must have a name

The change I needed to make to get my migration to run.

![[None]]

Since using alembic I have been just running out a new revision checking its content and deleting it if its empty, today I learned there is an alembic check command to check for operations that need to be created.

🤯 jinja comes with a loader to pre-compile templates! Defihnitely need to look at this for markata, as jinja is till one of the biggest hot spots.

I’ve definitely been missing out on setting up a proper jinja loader on a few projects, I need to lean on this a bit more.

class jinja2.FileSystemLoader(searchpath, encoding='utf-8', followlinks=False): ''' Load templates from a directory in the file system. '''

The path can be relative or absolute. Relative paths are relative to the current working directory.

Implement paging in sqlmodel with where, limit, and offset.

duckdb is a new in process database that has been making its rounds in analytics for its high performance in those applications.

Mother duck is a centeralized server that brings manages storage, data sharing and an ide to duckdb.

How to center things in textual. Textual has a very unique way of styling text user interfaces for the terminal using css. If you know css it feels natural.

@willmcgugan, has put together a great article on how to center things in textual

here the final result

Super useful way to show a tree view of an s3 bucket’s structure!

How to sort results from a sqlalchemy based orm.

.order_by(model.Entry.amount.desc())

I needed this to enable paging on my thoughts api.

A neovim database client that I need to check out.

I love rich inspect. It’s one of my most often used features of rich. It gives you a great human readable insight into python object instances.

>>> from rich import inspect >>> text_file = open("foo.txt", "w") >>> inspect(text_file)

I have a pyflyby entry for it so that I can just run it ang get automatic imports. To not clash with the standard library inspect, which is quite useful on it’s own, I have aliased it to rinspect.

In flask apps I often get a 404 for routes with a trailing slash. This Stack Overflow post shows how to configure flask to allow trailing slashes on some or all routes.

json-enc extension converts url encoded form values into json encoded data, this is very useful for fastapi to have the same interface for htmx and curl type of interfaces.

Getting request headers in fastapi has a pretty nice stetup, it allows you to get headers values as function arguments,

I was able to use headers to detect if a request was made from htmx or not.

If the request was made from htmx, then we want a html format, otherwise I’m probably hitting the api programatically from something like curl or python

1j01 created a complete working clone of ms paint in the terminal using the textual framework. It’s incredible.