Build a dependable Python foundation
Create an isolated project, make one function contract explicit, and turn a useful script into a product you can change safely.
Read: Build a dependable Python foundation with tests →
More in this path:Build a Python product that can be changed safely →Modern Python typing in practice: Protocol, TypedDict, and PEP 695 →Decide whether to adopt free-threaded Python (3.15, no-GIL) →Adopt the uv workflow for Python projects →