Python

Python Data Structures — list / dict / set / tuple Complexity Tradeoffs

Professional · priority 1

pythonlistdictsettuplebig-o

List / Dict / Set Comprehensions & Generator Expressions

Professional · priority 1

pythoncomprehensiongeneratormapfilter

Iterators & Generators — yield, itertools, Streaming Large Files

Professional · priority 1

pythoniteratorgeneratoryielditertoolsstreaming

Context Managers — with Statement, contextlib, Resource Safety

Professional · priority 1

pythoncontext-managerwithcontextlibresources

Error Handling — try/except/else/finally, Custom Exceptions, Logging

Professional · priority 1

pythonexceptionloggingtracebackcustom-exception

Decorators — Function & Class Decorators, functools.wraps

Professional · priority 1

pythondecoratorfunctoolswrapsmetaprogramming

Dataclasses & Pydantic — Validation, Serialization, Settings

Professional · priority 1

pythondataclasspydanticvalidationserializationsettings

async / await — asyncio, aiohttp, Concurrency Patterns

Professional · priority 1

pythonasyncioasyncawaitaiohttpconcurrency

threading vs multiprocessing — GIL, CPU vs IO, Worker Pools

Professional · priority 1

pythongilthreadingmultiprocessingpoolcpu-io

HTTP Clients — requests / httpx / Retries / Timeouts / Backoff

Professional · priority 1

pythonrequestshttpxretrytimeoutbackoffidempotency

File I/O — CSV / JSON / YAML / Pickle / Parquet, Streaming Reads

Professional · priority 1

pythoncsvjsonyamlpickleparquetio

pandas — DataFrame Basics, Indexing, Merge, GroupBy, Reshape

Professional · priority 1

pythonpandasdataframemergegroupbypivot

pandas Performance — vectorization, eval, categorical, arrow backend

Professional · priority 1

pythonpandasperformancevectorizationarrowcategorical

NumPy — Array Broadcasting, ufuncs, Memory Layout (C vs F Order)

Professional · priority 1

pythonnumpybroadcastufuncvectorizememory

Regex & String Parsing — re, Unicode, Anchors, Lookarounds

Professional · priority 1

pythonregexreunicodelookaroundanchor

datetime & Timezones — pendulum / zoneinfo / DST / UTC Everywhere

Professional · priority 1

pythondatetimetimezonependulumzoneinfodstutc

Packaging — pyproject.toml / build / twine / uv / pipx

Professional · priority 1

pythonpackagingpyprojectuvpipxbuildtwinewheel

Logging & Observability — structlog / loguru / OpenTelemetry SDK

Professional · priority 1

pythonloggingstructlogloguruopentelemetrytracing

Profiling — cProfile / py-spy / memray / Sampling vs Instrumentation

Professional · priority 1

pythonprofilingcprofilepy-spymemrayperformance

subprocess — run / Popen, Pipes, Quoting, Timeouts, Shell Escaping

Professional · priority 1

pythonsubprocessshellpipequotingtimeoutsecurity

SQLAlchemy 2.0 — Core vs ORM, Session, Typed Models, Migrations

Professional · priority 1

pythonsqlalchemyormalembicsessiontyped

Background Jobs — Celery / Dramatiq / RQ, Idempotency, Retries

Professional · priority 1

pythoncelerydramatiqrqbackground-jobidempotentretry

Caching — functools.lru_cache / cachetools / Redis-Backed TTL

Professional · priority 1

pythoncachelru_cachecachetoolsredisttl

cryptography — Symmetric / Asymmetric / Hashing / HMAC / KMS Integration

Professional · priority 1

pythoncryptographyaesrsahmackmskey-rotation

Secrets Management — python-decouple / Vault / AWS Secrets Manager

Professional · priority 1

pythonsecretsvaultaws-secretsenvdotenv

Deployment — gunicorn / uvicorn / hypercorn / workers & lifecycle

Professional · priority 1

pythongunicornuvicornworkersgraceful-shutdown

Security Hardening — bandit / safety / pip-audit / SBOM Generation

Professional · priority 1

pythonbanditsafetypip-auditsbomsupply-chain