Python project engineering

Apply to libraries, CLI tools, desktop cores and services. Determine the application role from the actual project; a frontend/backend product name does not constrain the language.

Read pyproject, lock/environment conventions, supported Python versions and current package layout. Do not mix new installers or replace the environment implicitly.

Apply the workflow

1. Locate the actual project, task boundary and existing contracts; load only the language and domain material needed now.
2. Apply the specialist checks, establishing the input evidence before selecting the smallest change.
3. Verify affected behavior with existing repository tools. Explicitly report missing tools, environments or execution; a plan is not a passing result.
4. Deliver scope, specialist decisions, actual verification and remaining risk. A review-only task stays read-only.

Task boundary

Focused event-loop cancellation or blocking-I/O problems belong to the async specialty.

Engineering practices

Read the local engineering decisions for this task and follow their links to relevant shared principles. Apply levels and exceptions against actual project contracts; product frontend/backend labels do not constrain language or role.