Practice Probs

What it does

Practice Probs supplements boring programing documentation with fun practice problems and solutions. As of writing, we offer programming challenges for Python libraries like NumPy, Pandas, Matplotlib, PyTorch, pytest, and scipy.

• PT
  Python-Type-Challenges, master Python typing with online exercises2023 · python-type-challenges.zeabur.app · ▲110

  Hi HN, I'm excited to share Python-Type-Challenges, a collection of hands-on, interactive challenges designed to help Python developers master type annotations. Whether you're new to type hints or looking to deepen your understanding, these exercises provide a fun and educational way to explore Python's type system. I'd love to get your feedback and contributions! https://github.com/laike9m/Python-Type-Challenges

• PC
  PyBites Code Challenges2017 · pybit.es · ▲63
• PP
  Practice Python Projects eBook for beginners2021 · learnbyexample.github.io · ▲27
• 
  Python ChallengesOct 2025 · pythonexercise.com · ▲7

  Interactive Python exercises to boost your skills

• 
  Practices of the Python Pro2019 · ▲14

  Learn to design professional, maintainable software at scale

• 
  Python Online course2019 · ▲2

  Get trained and get job

• TL
  The load-bearing vocabulary of Claude▲710

  Life & fun · 15d ago · louisabraham.github.io

• WI
  What if the speed of light was 5 km/h?▲572

  Special relativity simulator in which light crawls along at a human speed, so Lorentz contraction, aberration and Doppler shift happen at walking pace.

  Life & fun · 1d ago · rivendell.dmitrybrant.com

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  Articos▲398

  Launch with confidence, not gut instinct

  Life & fun · 16d ago · articos.com

• 
  The same nine streaming subscriptions cost $702/year more than in 2021▲369

  9 major streaming services cost $95.91/mo in 2021-03 and $154.41/mo today — up 61%, or $702 a year. Every change sourced.

  Life & fun · 18h ago · honestlyranked.com

• 
  Nex▲363

  Claude Cowork for high-volume GTM workflows

  Life & fun · 8d ago · nex.ai

• 
  Notify.domains▲321

  Know the moment a domain opportunity appears

  Life & fun · 13d ago · notify.domains

• IM
  I made a web game called Almost Pong▲1,135

  Hi HN! I made many small web games in the past with Unity or Phaser. But this time I wanted to make something completely on my own. So I coded a basic game framework in plain JavaScript, and used it to make Almost Pong. This was a really fun project that taught me a lot about JavaScript, and I plan to make more minimalist games with this framework. Interesting fact: Almost Pong doesn't load any assets, all sprites and sounds are generated with code. Happy to answer questions, and please let me know if you have any feedback on the game. Thanks!

  Dev tools · 2022 · lessmilk.com

• IM
  I'm writing a free book called Computer Networks from Scratch▲792

  Life & fun · 2022 · networksfromscratch.com

• HA
  HN Avatars in 357 bytes▲701

  Paste the following into the console of any HN page - for annotated avatars on all HN comments. (self contained code) for(u of document.querySelectorAll('.hnuser'))for(u.prepend(c=document.createElement('canvas')),x=c.getContext('2d'),c.width=18,c.height=14,s=u.innerText,r=1,i=28+s.length;i--;i>>29>X*X/3+Y/2&&x.fillRect(6+2*X,2*Y,2,2)&x.fillRect(6-2*X,2*Y,2,2):r+=s.charCodeAt(i-28,x.fillStyle='#'+(r>>8&0xFFFFFF).toString(16)))r^=r>>17,r^=r>2

  Dev tools · 2022

• 
  Tome Beta▲697

  The storytelling tool for work

  Work · 2022 · tome.app

• 
  Kairn▲694

  Regain control over your days

  Dev tools · 2022

• AG
  A game that tests how well you know your local area▲654

  Life & fun · 2022 · backofyourhand.com