Phase 68 recap + cumulative cross-course bridges + forward-link Phase 69/70
Phase 68 (M09 + M10) — bridge phase между core Python (Phase 65-67) и Production Skills (Phase 69) / Launch Polish (Phase 70). M09 ground stdlib I/O foundation; M10 added conceptual data libraries layer + heavy cross-course refs к existing Spark / DataFusion / ClickHouse / Storage Formats coursesware. Этот урок — recap + cumulative bridge table + forward-link.
В этом уроке:
- Phase 68 recap — M09 + M10 inventory.
- Cumulative cross-course bridge table — ≥10 references collected.
- Forward-link Phase 69 — Production Skills (Modules 11-13).
- Forward-link Phase 70 — Launch Polish (ASMT-04..08 closure).
- Pedagogical synthesis — three-layer cross-course bridge formula.
Phase 68 recap — M09 + M10 inventory
M09 (File I/O & Formats) — 7 lessons + 7 inline quizzes + 1 module exam (13 Q, 84.6% applied/analytical) + 3 code-challenges + 2 Run-on-Your-Machine callouts + 4 glossary terms.
| М09 урок | Title | Code-challenge | Run-on-Your-Machine? |
|---|---|---|---|
| 01 | Text I/O fundamentals: encoding, newlines, io.StringIO | — | — |
| 02 | CSV: csv.reader, csv.DictReader, dialects, quoting | py-m09-02-code-1 (Pattern 1) | — |
| 03 | JSON: json.loads/dumps, JSONL streaming, custom encoders | py-m09-03-code-1 (Pattern 2) | — |
| 04 | Binary formats overview: Parquet/ORC/Avro/Arrow IPC matrix | — (CONCEPTUAL ONLY) | — |
| 05 | Compression: gzip/bzip2/lz4/zstd/snappy tradeoffs | — | — |
| 06 | pathlib: cross-platform paths, Path.glob, / operator | py-m09-06-code-1 (Pattern 3) | ✓ #1 (mandate) |
| 07 | Module summary + bridge к M10 | — | ✓ #2 (optional) |
M10 (Data Libraries Conceptual) — 7 lessons + 7 inline quizzes + 1 module exam (10-12 Q, ≥75% applied/analytical) + 1-2 code-challenges + 3 Run-on-Your-Machine callouts + 3-4 glossary terms.
| М10 урок | Title | Code-challenge | Run-on-Your-Machine? |
|---|---|---|---|
| 01 | pandas: DataFrame model, eager evaluation, copy-on-write | py-m10-01-code-1 (Pattern 4) | ✓ #1 mandate |
| 02 | Polars: lazy API, query optimizer, columnar Arrow backend | — | ✓ #2 mandate |
| 03 | PyArrow: Arrow memory model, zero-copy, Table/RecordBatch | — | ✓ #3 mandate |
| 04 | Arrow C Data Interface — DataFrame interchange protocol | — (CONCEPTUAL — pure concept) | — |
| 05 | Why pandas/Polars/PyArrow don’t run в browser | — (CONCEPTUAL) | — |
| 06 | Decision matrix: when to use which library / engine | py-m10-06-code-1 (Pattern 4 variant — optional) | — |
| 07 | Phase 68 recap + cross-course bridges + forward-link | — (synthesis) | — |
Phase 68 totals: 14 lessons + 14 inline quizzes + 2 module exams + 4-5 code-challenges + ≥4 Run-on-Your-Machine callouts + 7-8 glossary terms.
Cumulative cross-course bridge table
Phase 68 = primary bridge phase до Phase 70 launch polish — heavy cross-course refs to existing course content.
| From (Phase 68) | To (other course) | Concept |
|---|---|---|
| M09 урок 02 CSV | /clickhouse-course/11-ingestion-patterns/07-format-clause/ | CSV / TSV / 7 forms comparison |
| M09 урок 02 CSV | /spark-course/02-dataframes-spark-sql/01-dataframe-creation-schema/ | spark.read.csv schema inference |
| M09 урок 03 JSON | /spark-course/02-dataframes-spark-sql/01-dataframe-creation-schema/ | spark.read.json schema inference |
| M09 урок 03 JSON | /clickhouse-course/11-ingestion-patterns/07-format-clause/ | JSONEachRow format |
| M09 урок 04 Parquet | /storage-formats/02-parquet/ | row groups deep dive (7 уроков) |
| M09 урок 04 ORC | /storage-formats/03-orc/ | ORC stripes vs Parquet row groups |
| M09 урок 04 Avro | /storage-formats/04-avro/ | schema-on-read evolution |
| M09 урок 04 Arrow IPC | /storage-formats/07-arrow/03-ipc-format/ | IPC zero-copy in-memory transfer |
| M09 урок 05 compression | /storage-formats/09-compression/ | compression internals (Btrblocks, Fastlanes, ALP, FSST) |
| M09 урок 05 compression | /spark-course/02-dataframes-spark-sql/04-groupby-aggregations/ | Spark shuffle compression |
| M10 урок 01 pandas DataFrame | /spark-course/02-dataframes-spark-sql/01-dataframe-creation-schema/ | distributed DataFrame model |
| M10 урок 01 pandas groupby | /spark-course/02-dataframes-spark-sql/04-groupby-aggregations/ | distributed groupby semantics |
| M10 урок 01 pandas joins | /spark-course/02-dataframes-spark-sql/03-joins-deep-dive/ | sort-merge / hash / broadcast joins |
| M10 урок 02 Polars lazy | /datafusion-course/02-architecture/ | logical plan optimizer parallel architecture |
| M10 урок 02 Polars optimizer | /datafusion-course/06-query-optimization/ | predicate / projection pushdown rules |
| M10 урок 03 PyArrow memory | /storage-formats/07-arrow/ | Arrow memory model deep dive (7 уроков) |
| M10 урок 03 PyArrow Spark | /spark-internals/10-arrow-spark-connect/ | PyArrow ↔ Spark interop |
| M10 урок 03 PyArrow Pandas UDFs | /spark-course/04-udf-performance/03-pandas-udfs-arrow/ | Arrow accelerates Pandas UDFs |
| M10 урок 04 Arrow C Data Interface | /storage-formats/07-arrow/03-ipc-format/ | IPC bytes-on-wire equivalent |
| M10 урок 04 Arrow C Data Interface | /datafusion-course/01-arrow-foundation/ | Arrow в Rust (FFI compatibility) |
| M10 урок 04 Arrow C Data Interface | /storage-formats/07-arrow/05-flight-protocol/ | gRPC Arrow data transfer |
| M10 урок 06 decision matrix Spark | /spark-course/00-course-intro/ | when-to-use Spark intro |
| M10 урок 06 decision matrix DataFusion | /datafusion-course/00-course-intro/ | when-to-use DataFusion intro |
| M10 урок 06 decision matrix ClickHouse | /clickhouse-course/00-course-intro/ | when-to-use ClickHouse OLAP intro |
Cumulative ≥24 cross-course references (target ≥14 per ASMT-08 — exceeded). Distribution:
- Storage Formats course — 9 references (heaviest — primary deep-dive route).
- Spark course — 8 references (DataFrame model, joins, groupby, Arrow Module, Pandas UDFs).
- DataFusion course — 4 references (architecture, query optimization, Arrow foundation, course intro).
- ClickHouse course — 3 references (FORMAT clause, course intro).
ASMT-08 closure status: Phase 68 contributes ≥24 cross-course refs против ASMT-08 mandatory ≥4 per module — 6x above threshold. Phase 70 final audit confirms full closure.
Forward-link Phase 69 — Production Skills (Modules 11-13)
Phase 69 ships M11/M12/M13 — production engineering skills built на M09/M10 foundation:
M11 — Logging & Monitoring:
- Builds на M09 урок 01 (encoding) — log files в UTF-8 / handling non-ASCII messages.
- Builds на M09 урок 06 (pathlib) —
RotatingFileHandler+ size-based rotation +Path.globдля log archive cleanup. - Builds на M07 урок 06 (typed exceptions PYTH-09) — structured exception logging.
- Cross-course → ClickHouse logging best practices.
M12 — Performance & Profiling:
tracemallocbuilds на M02 урок 01 (PyListObject sizes —sys.getsizeof).cProfile/pyinstrumentbuilds на M03/M05 (function call overhead, generator iteration cost).- Builds на M09 chunking patterns (M05 урок 02 generator climax → M09 урок 01 read_chunks).
- Cross-course → Spark profiling, DataFusion EXPLAIN ANALYZE.
M13 — Packaging & Environment:
pyproject.toml,pip,uv,rye— JSON/YAML config challenges (build на M09 урок 03 JSON parsing).- Builds на M07 type hints —
[project]table type validation. - Cross-course → Spark
spark-submitpackaging, ClickHouse Docker images.
Forward-link Phase 70 — Launch Polish (ASMT-04..08 closure)
Phase 70 ships final audit + launch artifacts:
- ASMT-04 final exam — covers все modules; включает Phase 68 cross-course refs (audited).
- ASMT-05 PDF certificate + badges — completion artifact.
- ASMT-06 glossary 80-100 terms — Phase 68 brings к 49-51; Phase 69 + Phase 70 fill remaining 30-50 terms к target.
- ASMT-07 troubleshooting KB (≥15 entries) — common pitfalls + fixes.
- ASMT-08 cross-course refs final audit — M09 contributes 6-8 + M10 contributes 8-10 = 14-18 cross-course refs total (well above ASMT-08 mandatory ≥4 per module).
Phase 68 — bridge layer: М09/М10 lessons reference 4 other courses (Spark / DataFusion / ClickHouse / Storage Formats) extensively. Это means обучающийся в Phase 68 уже перекрёстно exposed к broader ecosystem. Phase 70 final audit confirms cross-course coherence + cleans broken links если cross-course content evolved.
Pedagogical synthesis — three-layer cross-course bridge formula
Phase 68 instantiates three-layer bridge во всех major themes:
Theme 1 — Tabular data:
| Layer | Coverage |
|---|---|
| 1. Python lens | M09 урок 02 (csv.DictReader stdlib) + M10 урок 01 (pandas DataFrame concept) |
| 2. Format internals | Storage Formats M02 (Parquet 7 lessons) + M07 (Arrow 7 lessons) |
| 3. Engine integration | Spark M03 (distributed DataFrame), DataFusion M02 (Rust engine), ClickHouse FORMAT |
Theme 2 — Lazy evaluation:
| Layer | Coverage |
|---|---|
| 1. Iteration-level | M05 урок 02 (yield, PyGenObject) |
| 2. Expression-level | M10 урок 02 (Polars LazyFrame) |
| 3. Distributed plan | Spark RDD lineage, DataFusion query plan |
Theme 3 — Memory layout:
| Layer | Coverage |
|---|---|
| 1. Single-language | M02 урок 01 (PyListObject contiguous memory) |
| 2. Cross-library RAM | M10 урок 03 (Arrow zero-copy semantics) + M10 урок 04 (C Data Interface) |
| 3. On-disk + on-wire | Storage Formats M02/M07 (Parquet row groups + Arrow IPC) |
Pedagogical principle: same architectural primitives applied at different abstraction layers. Stdlib pure-algorithm versions (Pattern 4) → library hides algorithm + adds optimization (pandas / Polars) → distributed/embedded engine implements at scale (Spark / DataFusion / ClickHouse). Учащийся видит continuity через образовательный путь.
Phase 68 closure
Phase 68 (M09 + M10) ships:
- 14 lessons (7 М09 + 7 М10) — pragmatic-DEEP tone (recipes + docs refs; NOT D-07 ULTRA-DEEP).
- 14 inline quizzes + 2 module exams — ≥75% applied/analytical Bloom.
- 4-5 code-challenges — Patterns 1/2/3 stdlib + Pattern 4 pandas/polars equivalents.
- ≥4 Run-on-Your-Machine callouts — local Python engagement (pandas/Polars/PyArrow demos + pathlib disk operations).
- 6-8 glossary terms — incremental к 49-51 cumulative.
- ≥24 cross-course references — primary bridge layer к Storage Formats / Spark / DataFusion / ClickHouse.
Closes: DATA-01..07, FILE-01..06, ASMT-01/02/03, ASMT-08 partial (6x above threshold).
Forward к Phase 69: production engineering — M11/M12/M13 build on M09/M10 foundation.
Forward к Phase 70: launch polish — ASMT-04 final exam + ASMT-05 certificate + ASMT-06 glossary 80-100 + ASMT-07 troubleshooting + ASMT-08 final audit closure.