Week 02 — Environments and Dependency Management

The first thing that breaks: dependencies. The current toolchain and the patterns that survive in production.

Lecture

The dependency hell problem · virtualenv, conda, mamba, pipenv, poetry, uv · pyproject.toml and lockfiles · devcontainers · Docker as an environment · trade-offs (reproducibility vs speed).

Code lab

Lab 1 — Reproducible Python environment

Set up a project with uv + pyproject.toml + lockfile + pre-commit hooks. Add a Dockerfile that reproduces the same environment. Verify identical behavior on host and container.

Notebook: lab01-environments.ipynb  ·  Dataset: —

Reference text for this week: chapter 02 of the bilingual notes — EN PDF · FR PDF.