PCEA-30-01 deep review — September 30, 2026

The guide now maps 46 detailed objectives, grouped 6/9/7/8/8/8, expands 18 answers, and contains three exact original executable files. Each normal/optimized mode passes 25 behavioral test methods and 23 observation checks. The result remains reviewed with blockers: the full ten-step lab and independent human review are not complete.

Scope and current credential status

The complete indexed canonical English syllabus, all detailed bullets and full MQC profile were read after direct retrieval and the objective monitor timed out. The existing detailed snapshot remains historical evidence; manual confirmation is not a new successful automated hash observation. Full PDF reading is pending. Requests, Beautiful Soup and schedule are third-party packages despite the MQC's standard-library wording.

The complete credential page still describes limited availability / small market trial / beta. An active syllabus does not establish general delivery. The seven-year validity,46-question/60-minute-plus-NDA/75%/English/TestNow snapshot remains visible, with USD69 exam and USD86 retake bundle listings. The complete testing policy, revised September2,2025, specifies seven days after a failed attempt; generic passed-retake wording does not establish eligibility. No account, booking, purchase or protected questions were accessed.

Selected pinned Python3.13 and current Requests/BeautifulSoup/schedule contracts support the original examples. Existing runtime versions are CPython3.13.14, Requests2.34.2, BeautifulSoup4.13.3 and Ruff0.16.4; document versions are separately recorded. Fresh byte hashes permit reuse of specifically identified PCES reading ranges for six sources. No whole-manual audit or automatic dependency upgrade is claimed.

What actually ran

automation_workbook.py, test_automation_workbook.py and observations.py were matched exactly against their public code fences before execution. Four recorded runs treat warnings as errors; both computed observation JSON reports match. Selected Ruff rules pass at79columns. No assertions disappear under optimized mode because public behavioral checks use unittest methods or explicit conditions.

The synthetic schema rejects unexpected/missing fields, duplicate IDs/JSON keys, non-finite JSON numbers, booleans as counts, invalid ranges and control characters. CSV merge preserves quoted commas and rejects extra/missing cells and duplicate IDs across parts. Display CSV intentionally prefixes labels; HTML uses text-node escaping. BeautifulSoup parses one static title with explicit parser/cardinality checks. These bounded contracts are not a universal data or browser security verdict.

Each observation run creates eight short-lived listeners bound to127.0.0.1 on assigned ports, each handling exactly one owned /records request. Cases cover success, redirects,429,500, media type, oversized bytes, compression and missing fields. No Authorization or Cookie header was observed. Session settings disable ambient proxy/default authentication and redirects; contexts close responses/sessions. A separate mocked ReadTimeout checks propagation/configuration/cleanup. This does not prove external API/TLS/authentication, total wall-clock deadlines, retries or pagination.

The original87-byte snapshot is staged beside its fixed target, closed and replaced. A canonical rerun leaves bytes and modification time unchanged. Changed data updates state. A simulated replacement failure preserves previous bytes and removes the owned stage. An actual shutil.copyfile backup/restore verifies byte equality and parsed rows. All temporary roots are removed and checked. No cross-file transaction, power-loss durability, concurrent-writer protection, authenticated backup origin or secure erasure is claimed.

Actual short Python children distinguish successful JSON stdout/zero status from invalid-argument stderr/status2. An initial -I experiment exposed unavailable user-installed Requests; final -E -B children use existing packages without installation, and optimized runs also pass -O. They do not claim isolated mode. A private logger emits counts/change/duration and failure type without source labels or synthetic private error text. An injected clock verifies0.25seconds as an oracle, not a performance result.

A separate same-process nonblocking lock probe checks contention/release, but does not wrap run_once or implement a cross-process scheduler lock. notification_needed is a decision only; no notification is sent. Hypothetical ROI arithmetic gives USD1,200 annual manual cost, USD800 first-year automation cost,50% ROI and0.5-year simplified payback under explicitly stated assumptions. These are not measured business savings.

Learning-resource repair

The complete Automate the Boring Stuff author landing identifies a free third-edition web book; its video course follows much of the first edition. Linked chapters/workbook/videos were not completed. Author planning budgets are distinguished from measured durations.

The old O'Reilly ISBN9781803247300 association remains unverified after blocked/timeout access and unsuccessful exact-ISBN confirmation. The recommendation now links to the confirmed Packt third-edition listing: Jaime Buelta,June29,2026,676pages,printISBN9781806702893. Selected metadata and the complete visible contents list were read, along with only an opening portion of the public sample. The page's19-chapter label differs from17 numbered chapters plus other-books/index entries. Broader AI/MCP material is not added to the exam blueprint. The old source remains historical/unverified; no paid interior, entitlement, purchase or download was reviewed.

Remaining work and validation

There are30direct source receipts:23successful,5errors and2blocked. Indexed content review is separate from direct reachability. Source evidence records exact selected/complete/hash-reused boundaries and unreviewed content.

schedule and plyer are absent. Venv setup/activation, Unix permission exercises, persistent scheduler launch, real SMTP/desktop delivery, durable monitoring, external API/TLS/authentication and the full integrated lab remain pending. No service, system task, installation, runtime/authentication/permission change or external message was made. Human content/accessibility review and passed-retake eligibility remain unresolved.

Exact source hashes, four execution receipts, dependency inventory, reading boundaries and computed results are recorded in repository evidence ADLC_Docs/operations/2026-09-30-pcea-30-01-deep-review.json. Repository tests, strict site generation, repository/site/catalog consistency and whitespace checks are recorded after their gates complete.