py_regular_expressions VS bms-tools

These exercises have been adapted from my Understanding Python re(gex)? ebook (free to read online).

This new version is a TUI app built with Textual. Previous one was written using `tkinter` [0] and covered only four of the `re` functions.

Now, any valid Python expression is accepted as a solution. Both the builtin `re` and third-party `regex` modules are covered.

These exercises have been adapted from my Understanding Python re(gex)? ebook [1] (free to read online, and PDF/EPUB versions are free till the end of this month).

I'd appreciate your feedback, happy learning :)

[0] https://news.ycombinator.com/item?id=29391107

[1] https://github.com/learnbyexample/py_regular_expressions

Visit https://github.com/learnbyexample/py_regular_expressions for markdown source, example files, exercise solutions, sample chapters and other details related to the book.

Last year, I did a similar project for 75 Python regular expressions exercises: https://github.com/learnbyexample/py_regular_expressions/tre...

That was with Tkinter. I'm planning to update the regex book next year (to add new features like possessive quantifiers and other misc changes). Along with this update, I'll probably make a TUI version and add support for rest of the exercises.

If you are interested in Python regex, here's my tkinter app with 75 interactive exercises: https://github.com/learnbyexample/py_regular_expressions/tre...

This assumes you already know Python regex. If you'd like learn first, see my free ebook: https://learnbyexample.github.io/py_regular_expressions/

I have an entire book dedicated for learning regex from the basics, with hundreds of examples and exercises. I cover both re and third-party regex module. It is free to read online: https://learnbyexample.github.io/py_regular_expressions/

A tkinter GUI that helps you to practice your understanding of regular expressions with 75 exercises: https://github.com/learnbyexample/py_regular_expressions/tree/master/interactive_exercises

https://github.com/learnbyexample/py_regular_expressions/blob/master/py_regex.md.

The code in question: bms-tools.

In my learning journey I have come to realize that BMSes do exist and my silly setup is both redundant and not very good at keeping the battery safe. I found a smart BMS by a company called JBD that has several 3rd party libraries written for it, including the one I'm using by a fellow redditor here called /u/MrSurly. Here's a link to his BMS library. The BMS library allows me to communicate with the BMS using the RPi, I get information such as the voltage of each cell, current output, and more information. It also automatically stops the discharging when the battery is about to die.

You can use the BMS Tools Python library, but I'm biased, as I wrote this.

So, I went down a rabbit hole of creating an open-source app for the somewhat popular JBD / XiaoXiang BMS. I was messing about with the features provided by the somewhat clunky official Windows app, and tried to do a firmware update on the BMS, and promptly bricked it.

Thank you! Yeah, I've tried a variety of edits to the function call, it's from the backend of a very professionally done python package with the reverse-engineered protocol for this pretty ubiquitous type of BMS; It is very cleanly written but also broken out into a ton of little stepwise functions many of which I don't understand... Enum types, lots of decorators (@staticmethod, @serial.setter, @property) and dunder enter/exit's... but I get the gist of it, every time I ask it it to read data it opens the port, constructs the bytes for the read command, sends them over the port, then collects the response byte-by-byte, verifies the final checksum byte, if ok then converts the payload to a dict otherwise raises an exception, and finally returns the data dict.

The serial protocol is now available here: https://gitlab.com/bms-tools/bms-tools/-/blob/master/JBD_REGISTER_MAP.md

Hey, here's the v1.1.0 release page -- should fix that issue.