RegExr VS black

Compare RegExr vs black and see what are their differences.

RegExr

RegExr is a HTML/JS based tool for creating, testing, and learning about Regular Expressions. (by gskinner)
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RegExr black
579 322
9,573 37,456
- 0.6%
0.0 9.4
about 1 month ago 2 days ago
JavaScript Python
GNU General Public License v3.0 only MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

RegExr

Posts with mentions or reviews of RegExr. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-10-10.
  • Hot Springs
    1 project | dev.to | 3 Jan 2024
    When thinking about how I might compare an arrangement to the contiguous group of damaged springs, I used regexr.com to experiment with very specific regexs that used the numbers.
  • Demystifying Regular Expressions (Regex): A Chat Sheet Guide
    1 project | dev.to | 27 Dec 2023
    There are plenty of online regex tools to test and experiment with regex patterns. Some popular ones include RegExr, RegEx101, and RegexPlanet.
  • Camel Cards
    1 project | dev.to | 16 Dec 2023
    Using regexr.com it at least appears to work as expected.
  • [2023 Day 2] [Python] Stuck on the first task
    1 project | /r/adventofcode | 9 Dec 2023
    If you are going to use RE's, use something like https://regexr.com/ to double check that they're doing what you want. I was suspicious of your 'cols = re.findall(r'\d+ .....', i)' line, and indeed it does miss some columns. You should rethink your column detection, and either not use REs or learn how to use capture groups and \w. There would then be no reason to use yet another RE in your column iterator to extract the numbers which you've already detected.
  • 2023 Day 2 Part A [Java] regex pattern not matching
    1 project | /r/adventofcode | 4 Dec 2023
    First time posting here, let me know if I need to edit post to conform to any rules. My issue is that I'm trying to match regex pattern to separate out the number of cubes drawn and its color but my Matcher object seems to not be returning any matches so it's throwing a no match found exception when I try to call digitMatcher.group(). I have tested my regex pattern on sites like regexr and it seems to pass there but it's not working for some reason here. I use the same type of regex on day one and it work there so I'm not sure where my regex pattern is failing here. I'm talking about specifically in my isGameValid() method where I create a matcher base on a pattern I made above. Through debugging I know that I separated the string color pairing correctly and that my Matcher object has the correct regex pattern, it's just not matching for some reason. Any help would be appreciated. Code below:
  • Trebuchet?!
    1 project | dev.to | 1 Dec 2023
    Regexr has been an invaluable tool as a beginner.
  • 10 Lesser-Known Tools and Websites to Spice Up Your Developer Toolbox
    8 projects | dev.to | 10 Oct 2023
    RegExr simplifies working with regular expressions. This online tool provides a visual interface for building and testing regex patterns in real-time, making regex less intimidating.
  • What regex flavour does vscode use in language-configuration.json
    1 project | /r/vscode | 10 Jul 2023
  • Regex not working
    2 projects | /r/vba | 10 Jul 2023
    Ho did you arrive at the regex? I usually use a website to , such as https://regex101.com/, https://regexr.com/, https://regex-generator.olafneumann.org/ in combination of each other, as some explain better than the other.
  • Capture the first instance, but don't stop?
    1 project | /r/regex | 8 Jul 2023
    I pulled this into regexr.com and it yielded the same results except it removed :41:

black

Posts with mentions or reviews of black. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-03-29.
  • How to setup Black and pre-commit in python for auto text-formatting on commit
    3 projects | dev.to | 29 Mar 2024
    $ git commit -m "add pre-commit configuration" [INFO] Initializing environment for https://github.com/psf/black. [INFO] Installing environment for https://github.com/psf/black. [INFO] Once installed this environment will be reused. [INFO] This may take a few minutes... black................................................(no files to check)Skipped [main 6e21eab] add pre-commit configuration 1 file changed, 7 insertions(+)
  • Enhance Your Project Quality with These Top Python Libraries
    16 projects | dev.to | 18 Mar 2024
    Black: Known as “The Uncompromising Code Formatter”, Black automatically formats your Python code to conform to the PEP 8 style guide. It takes away the hassle of having to manually adjust your code style.
  • Uv: Python Packaging in Rust
    9 projects | news.ycombinator.com | 15 Feb 2024
    black @ git+https://github.com/psf/black
  • Let's meet Black: Python Code Formatting
    2 projects | dev.to | 7 Feb 2024
    In the realm of Python development, there is a multitude of code formatters that adhere to PEP 8 guidelines. Today, we will briefly discuss how to install and utilize black.
  • Show HN: Visualize the Entropy of a Codebase with a 3D Force-Directed Graph
    6 projects | news.ycombinator.com | 31 Jan 2024
    Perfect, that worked, thank you!

    I thought this could be solved by changing the directory to src/ and then executing that command, but this didn't work.

    This also seems to be an issue with the web app, e.g. the repository for the formatter black is only one white dot https://dep-tree-explorer.vercel.app/api?repo=https://github...

  • Introducing Flask-Muck: How To Build a Comprehensive Flask REST API in 5 Minutes
    3 projects | dev.to | 20 Dec 2023
  • Embracing Modern Python for Web Development
    12 projects | dev.to | 8 Dec 2023
    Ruff is not only much faster, but it is also very convenient to have an all-in-one solution that replaces multiple other widely used tools: Flake8 (linter), isort (imports sorting), Black (code formatter), autoflake, many Flake8 plugins and more. And it has drop-in parity with these tools, so it is really straightforward to migrate from them to Ruff.
  • Auto-formater for Android (Kotlin)
    1 project | /r/androiddev | 5 Dec 2023
    What I am looking for is something like Black for Python, which is opinionated, with reasonable defaults, and auto-fixes most/all issues.
  • Releasing my Python Project
    4 projects | dev.to | 26 Nov 2023
    1. LICENSE: This file contains information about the rights and permissions granted to users regarding the use, modification, distribution, and sharing of the software. I already had an MIT License in my project. 2. pyproject.toml: It is a configuration file typically used for specifying build requirements and backend build systems for Python projects. I was already using this file for Black code formatter configuration. 3. README.md: Used as a documentation file for your project, typically includes project overview, installation instructions and optionally, contribution instructions. 4. example_package_YOUR_USERNAME_HERE: One big change I had to face was restructuring my project, essentially packaging all files in this directory. The name of this directory should be what you want to name your package and shoud not conflict with any of the existing packages. Of course, since its a Python Package, it needs to have an __init__.py. 5. tests/: This is where you put all your unit and integration tests, I think its optional as not all projects will have tests. The rest of the project remains as is.
  • Lute v3 - installed software for learning foreign languages through reading
    2 projects | /r/flask | 15 Nov 2023
    using pylint and black ("the uncompromising code formatter")

What are some alternatives?

When comparing RegExr and black you can also consider the following projects:

RegEx101 - This repository is currently only used for issue tracking for www.regex101.com

autopep8 - A tool that automatically formats Python code to conform to the PEP 8 style guide.

RegExpBuilder

prettier - Prettier is an opinionated code formatter.

Visual Studio Code - Visual Studio Code

yapf - A formatter for Python files

CyberChef - The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis

Pylint - It's not just a linter that annoys you!

self-hosted - Sentry, feature-complete and packaged up for low-volume deployments and proofs-of-concept

ruff - An extremely fast Python linter and code formatter, written in Rust.

Regexly - WYSIWYG Regex playground for those who JavaScript

isort - A Python utility / library to sort imports.