Bob Belderbos bbelderbos

Hi there, I'm Bob 👋

🐍 Python software developer & coach
🧠 Co-Founder of Pybites – practical, project-driven Python training
📚 I love books / reading, yet my focus is shipping real projects, not just consuming more tutorials.

PDI – Beginner Coaching: 1:1 support for people taking their first serious steps into Python.
PDC – Project / Cohort Coaching: Guided, project-based cohorts where you ship real apps and learn modern dev practices. Beginner and intermediate Python, in progress: Rust, Agentic AI, and Django.
PDM – Professional Developer Mindset: Flagship 1:1 intermediate / advanced program: mentoring, systems, and feedback to grow into a trusted senior developer.
Pybites Platform: 400+ hands-on Python exercises that teach idiomatic, tested code with instant feedback.
Rust for Python Devs:
- Writing at rsbit.es about Rust from a Pythonista’s perspective.
- Building rustplatform.com with practical Rust exercises and step up to project building in our upcoming Rust cohort coaching program.
Talk Python “100 Days of Code” courses: Co-created two 100 Days of Code courses with Talk Python (Python and Web dev) to help people level up through daily practice.
Pybites Books: Django-powered, clutter-free reading tracker to log books, mark favourites, and share what you’re reading — built to inspire reading and help kids (and adults) spend less time on screens.

Started in support & finance, automating my work with Excel + VBA macros.
Saw a painful problem: tons of telemetry bundles, no tool to analyse them.
Built a scrappy PHP app that processed thousands of bundles for hundreds of engineers.
That project put me on the map: I was pulled into automation work and finally became a full-time developer.

No CS degree — just JIT learning, persistence, and a lot of increasingly complex projects building up real-world experience. 💡

Now I help others escape tutorial hell, ship things, and build careers around it. 🚀

Escaping tutorial paralysis and designing a project roadmap
Writing clean, tested, idiomatic Python – and sharing what I’m learning as I dive deeper into Rust and other languages
Building CLIs, web apps, and automations that actually get used
Levelling up from “coder” to trusted engineer / senior dev
Creating systems for consistent learning: exercises, reading, and reflection
Turning your editor (especially Vim) and terminal into real productivity multipliers –
Supercharge Your Vim Workflow · 9 Command Line Tips Every Developer Should Know

I came across this quote recently: (17 Dec 2025) - link
Advent of Code solving is one thing — the real 2–3× value is in refactoring afterwards, finding new creative ways of doing things. 💡 (16 Dec 2025) - link
We are all AI developers now in a sense ...
The game has changed. With AI handling more routine coding tasks, the developers who will lead the future are the ones who can transcend their traditional role. (15 Dec 2025) - link

Follow me »

get elements common to all groups: Set operations are so concise in #Python 🐍😍 ... (10 Dec 2025) - link
power of the right data structure: stacks: From ~9 seconds to ~0.1 seconds… just by changing the data structure. ... (26 Nov 2025) - link
Logging memory usage: Cool debugging trick I picked up from: ... (20 Nov 2025) - link
find dependency dependencies: I needed to see which packages were pulling in six. ... (20 Nov 2025) - link
from messy to clean numbers with `removeprefix` / `removesuffix`: With `removeprefix("$")` and `removesuffix(suffix)` you strip only what you *expect* to be there, then `float(cap) * multiplier` does the rest. Classic EAFP: try to parse, fall back to `0.0` when the data is junk. ... (20 Nov 2025) - link

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