📋 Cheatsheets
Copy-ready Python patterns by topic
One page per topic, all curated by hand from the matching CodeMentor track. The 80% you actually reach for, not every API in the docs.
Python basics cheatsheet — print, variables, lists, loops, functions
28 snippets · 6 sectionsThe Python patterns you'll reach for every day in the first 90 days — copy, adapt, ship. Pulled from the CodeMentor Foundations track (170 lessons).
FastAPI cheatsheet — routes, Pydantic, auth, async, deploy
15 snippets · 6 sectionsFastAPI patterns from the production track, condensed into one page. Routes, Pydantic, dependencies, async, errors, auth, testing — copy-ready.
pandas cheatsheet — load, clean, group, join, plot
23 snippets · 7 sectionsReal pandas patterns from the Data Science track. Loading, tidying, grouping, joining, time-series, plotting. The 80% you actually use.
AI Engineering cheatsheet — Claude API, tools, RAG, evals
13 snippets · 5 sectionsProduction AI patterns from the AI Engineering track. Claude API calls, tool use, RAG, eval suites, prompt caching — copy-ready snippets.
System design cheatsheet — patterns junior+ interviews ask for
13 snippets · 5 sectionsThe system-design patterns that actually come up in junior-to-mid Python interviews. Load balancing, caching, queues, sharding, monitoring — concrete trade-offs.
DevOps cheatsheet — Docker, CI/CD, K8s, observability
13 snippets · 4 sectionsReal DevOps patterns from the DevOps track. Multi-stage Docker, GitHub Actions, K8s deployments, Prometheus, secrets, rollback recipes.
Python interview cheatsheet — the 8 patterns that actually show up
16 snippets · 3 sectionsWhat junior + mid Python interviews actually ask. 8 algorithmic patterns, behavioural STAR template, and 5 system-design lite scenarios.
Senior Python cheatsheet — async internals, GIL, perf, descriptors
17 snippets · 5 sectionsSenior-level Python patterns — asyncio internals, GIL trade-offs, descriptors, metaclasses, perf profiling. The depth interviews + promo packets care about.
More on the way — testing, async, DevOps, AI engineering, system design.