Module Dependency Map

Page Maps

graph LR
  family["Python Programming"]
  program["Python Object-Oriented Programming"]
  section["Reference"]
  page["Module Dependency Map"]
  capstone["Capstone evidence"]

  family --> program --> section --> page
  page -.applies in.-> capstone

flowchart LR
  orient["Orient on the page map"] --> read["Read the main claim and examples"]
  read --> inspect["Inspect the related code, proof, or capstone surface"]
  inspect --> verify["Run or review the verification path"]
  verify --> apply["Apply the idea back to the module and capstone"]

Use this page when you remember an object-oriented topic but not why it appears where it does in the course. The goal is to keep later design pressures attached to earlier ownership and semantics work.

Main sequence

graph TD
  m01["01 Object Semantics and the Data Model"]
  m02["02 Design Roles, Interfaces, and Layering"]
  m03["03 State, Validation, and Typestate"]
  m04["04 Aggregates, Events, and Collaboration Boundaries"]
  m05["05 Resources, Failures, and Safe Evolution"]
  m06["06 Persistence, Serialization, and Schema Evolution"]
  m07["07 Time, Scheduling, and Concurrency Boundaries"]
  m08["08 Testing Contracts and Verification Depth"]
  m09["09 Public APIs and Extension Governance"]
  m10["10 Performance, Observability, and Security Review"]

  m01 --> m02 --> m03 --> m04 --> m05 --> m06
  m03 --> m07 --> m08 --> m09 --> m10
  m04 --> m09
  m05 --> m10
  m08 --> m10

Why the sequence looks like this

Module	Depends most on	Reason
01	none	object semantics and the data model define the vocabulary of later design work
02	01	roles and interfaces only matter after object shape and responsibility are visible
03	01-02	lifecycle and validation rules depend on stable object boundaries
04	02-03	aggregates and events only make sense once authority and typestate are clear
05	03-04	safe evolution depends on known lifecycle and collaboration boundaries
06	03-05	persistence should adapt to invariants that already exist
07	03-05	time and concurrency boundaries are safer after ownership is already disciplined
08	01-07	testing depth depends on knowing what the objects are actually promising
09	02-08	extension governance belongs late because public API pressure depends on the whole design
10	all earlier modules	final review needs semantics, boundaries, proof, and stewardship together

Fastest safe paths

• first full pass: read Modules 01 through 10 in order
• working maintainer: start with Modules 03, 04, 08, and 09, then backfill earlier modules when ownership vocabulary feels weak
• design steward: start with Modules 04, 06, 09, and 10, then revisit earlier modules when invariants or lifecycle edges point backward