Tag: Python
-
Your First Data Analysis Project: CSV to Insights Guide
Learn data analysis fundamentals with a hands-on CSV project. Master Pandas, visualization, and insights extraction in this beginner-friendly guide.
-
Import Side Effects Break Tests: 4 Patterns That Pass Locally
Import side effects pass locally but break in CI. Here's how env vars, DB connections, and plugin registration fail when test order changes.
-
Recursive DFS vs Iterative Stack: Cycle Detection Performance and Limits
Recursive DFS is 30% faster but crashes at 10K nodes. Iterative survives 50K graphs โ here's the stack overhead breakdown and when each wins.
-
uv vs pip vs Poetry: Install Speed Test on 50+ Packages
pip took 68s, Poetry 227s, uv just 4s for 52 packages. Here's why the Rust-based installer wins for beginners โ and when to stick with Poetry.
-
Python Type Hints: runtime vs typing-only Annotations
Most Python type hints do nothing at runtime. See which annotations actually validate, real performance numbers, and the isinstance() trap with generics.
-
Gymnasium Custom Env Step() Returns Invalid Shape: 5 Fixes
Fix Gymnasium custom env step() shape errors with 5 proven solutions. Learn proper observation space handling and avoid common pitfalls.
-
.pyi vs beartype vs typeguard: 43% Runtime Overhead
Compare .pyi stub files, beartype, and typeguard for Python type checking. Discover which approach adds 43% runtime overhead and when to use each.