Blu: Patch: add Homeplace, the reader of arthel and PickiPedia (via create-page on MediaWiki MCP Server)

2026-11-04T18:03:49Z

Patch: add Homeplace, the reader of arthel and PickiPedia (via create-page on MediaWiki MCP Server)

New page

Patch for <code>pickipedia:blu/homeplace</code>: one commit adding Homeplace (tools/homeplace.py, tools/test_homeplace.py). It applies '''on top of''' [[Emergent:Blu/Patches/sideman-fixes]] (commit b2b8e5c, which is on production at 48ed2cc): <code>git am</code> that page first, then this one. One branch with both commits and one PR is fine. Made with <code>git format-patch</code> at block 26,343,078. sha256 of this file: 0bf1bec4bfeb01ea6f8b935f2360e5544ba5d332f6e46d37668e1c1adb93578a. 70 tests pass (recording_credits + rambler + homeplace). tools/ only, nothing to redeploy. Needs PyYAML for the arthel source (already a dependency of the podcast tools).

<pre><nowiki>
From 6dd8f8486d32f4fb054ca51156bd52b33dd407c3 Mon Sep 17 00:00:00 2001
From: blu <blu@cryptograss.live>
Date: Wed, 4 Nov 2026 18:02:09 +0000
Subject: [PATCH] Add Homeplace: who played with whom, read from arthel and
PickiPedia

Sideman and Rambler read MusicBrainz and Discogs, which know nothing of
a Binghamton fiddler at a museum show (connectome, Nov 2-4). Homeplace
reads the sources we keep ourselves and puts out Rambler's graph shape,
so the two merge (--merge) and walk as one.

Sources: arthel's shows/*.yaml (the ensemble, plus anyone featured on a
song, at 'show' and 'song' scope) and songs_and_tunes/*.yaml studio
cuts (the record and its ensemble, at 'track' scope); PickiPedia's Has
performer on {{Studio cut}} subobjects and Has personnel from {{Record
personnel}}. A record named in both arthel and the wiki is one node with
both sources. Shows are records of kind 'show': same stage, not the same
cut, and marked so.

Names are copied as written and never merged ('Justin Holmes' and
'Justin Myles Holmes' stay two people). Every edge names its source.
Nothing is written to the wiki.

Live, arthel + wiki: 53 records (50 shows), 62 people, 228 edges.
9 tests; 70 pass across Sideman, Rambler and Homeplace.
---
tools/homeplace.py | 297 ++++++++++++++++++++++++++++++++++++++++
tools/test_homeplace.py | 138 +++++++++++++++++++
2 files changed, 435 insertions(+)
create mode 100644 tools/homeplace.py
create mode 100644 tools/test_homeplace.py

diff --git a/tools/homeplace.py b/tools/homeplace.py
new file mode 100644
index 0000000..abd51d4
--- /dev/null
+++ b/tools/homeplace.py
@@ -0,0 +1,297 @@
+#!/usr/bin/env python3
+"""
+Homeplace: who played with whom, read from our own house.
+
+ python3 tools/homeplace.py --arthel ../arthel/src/data
+ python3 tools/homeplace.py --wiki
+ python3 tools/homeplace.py --arthel ../arthel/src/data --wiki --json
+ python3 tools/homeplace.py --wiki --merge rambler.json
+
+An Artificial Dumb reader for the connectome. Sideman and Rambler look
+outward, at MusicBrainz and Discogs; those know nothing about a Binghamton
+fiddler at a museum show. Homeplace reads the sources we keep ourselves:
+
+ - arthel's YAML: each show (shows/*.yaml: its ensemble, plus anyone
+ featured on a song) and each studio cut (songs_and_tunes/*.yaml,
+ studio_versions: the record it is on and the ensemble that cut it).
+ - PickiPedia's own properties: Has performer on each {{Studio cut}}
+ subobject (who played which instrument on which record's cut), and
+ Has personnel from {{Record personnel}} (who is on a record).
+
+It puts out the same graph Rambler does -- records (and shows), people, and
+the pairs that share a person -- so the two can be merged with --merge and
+walked as one. A show is a record with kind "show": people who were on the
+same stage, which is a lower-resolution edge than a cut and is marked so.
+
+What makes it dumb, deliberately:
+
+ - It copies names as written. "Justin Holmes" and "Justin Myles Holmes"
+ are two people until a person says otherwise; a solo marked "Justin"
+ is not matched to anyone.
+ - Every edge names its source: the YAML file, or the wiki page the
+ subobject is on.
+ - It writes nothing. The wiki's own data model is read, never added to.
+"""
+
+import argparse
+import json
+import os
+import re
+import sys
+from collections import defaultdict
+from urllib.parse import quote, urlencode
+from urllib.request import Request, urlopen
+
+import rambler
+
+ARTHEL_BLOB = "https://github.com/cryptograss/arthel/blob/main/src/data/"
+WIKI_API = "https://pickipedia.xyz/api.php"
+WIKI_PAGE = "https://pickipedia.xyz/wiki/"
+USER_AGENT = "pickipedia-homeplace/0.1 (https://pickipedia.xyz; blu@cryptograss.live)"
+
+
+def person(instruments, scope, source):
+ return {"mbid": None, "roles": set(instruments), "scopes": {scope}, "sources": {source}}
+
+
+def add_person(record, name, instruments, scope, source):
+ name = name.strip()
+ if not name:
+ return
+ p = record["people"].setdefault(name, person((), scope, source))
+ p["roles"].update(i.strip() for i in instruments if i and i.strip())
+ p["scopes"].add(scope)
+ p["sources"].add(source)
+
+
+def new_record(rid, title, date="", artist="", kind="record", sources=None):
+ return {"id": rid, "group": rid, "title": title, "date": date, "artist": artist,
+ "kind": kind, "compilation": False, "sources": dict(sources or {}), "people": {}}
+
+
+# ---------------------------------------------------------------------------
+# arthel
+# ---------------------------------------------------------------------------
+
+FEATURED = re.compile(r"^\s*(?P<name>[^(]+?)\s*(?:$(?P<instrument>[^)]*)$)?\s*$")
+
+
+def parse_featured(entry):
+ """'Fibonacci Emery Holmes (keys)' -> ('Fibonacci Emery Holmes', ['keys']);
+ 'Shaka Lei Kaumaka' -> ('Shaka Lei Kaumaka', [])."""
+ m = FEATURED.match(str(entry))
+ if not m:
+ return str(entry).strip(), []
+ inst = m.group("instrument")
+ return m.group("name").strip(), [i.strip() for i in inst.split(",")] if inst else []
+
+
+def arthel_show(stem, data, source):
+ """One shows/*.yaml file as a record of kind 'show'.
+
+ The filename is '<artist id>-<block height>'; the block is the date we
+ keep. The ensemble is on the whole show; anyone featured on a song is
+ on the show too, with scope 'song' so a later walk can tell them apart.
+ """
+ block = stem.split("-", 1)[-1] if "-" in stem else ""
+ rec = new_record(f"show:{stem}", data.get("title") or stem,
+ date=f"block {block}" if block else "", artist=data.get("venue", ""),
+ kind="show", sources={"arthel": source})
+ for name, instruments in (data.get("ensemble") or {}).items():
+ add_person(rec, name, instruments if isinstance(instruments, list) else [instruments], "show", source)
+ for s in (data.get("sets") or {}).values():
+ for play in (s or {}).get("songplays") or []:
+ if not isinstance(play, dict):
+ continue
+ # '- Title:\n mode: segue' parses flat: {"Title": None, "mode": ...},
+ # so the modifications sit beside the title, or under it if indented.
+ mods = [play.get("ensemble-modifications")]
+ mods += [v.get("ensemble-modifications") for v in play.values() if isinstance(v, dict)]
+ for entry in (e for m in mods if m for e in m.get("featuring") or []):
+ name, instruments = parse_featured(entry)
+ add_person(rec, name, instruments, "song", source)
+ return rec
+
+
+def arthel_cuts(stem, data, source):
+ """The studio cuts in one songs_and_tunes/*.yaml, as (record title, people).
+
+ A cut's ensemble is on that record, at track scope: this is the same
+ fact {{Studio cut}} stores on the wiki.
+ """
+ out = []
+ for version in (data.get("studio_versions") or {}).values():
+ for record_title, cut in (version or {}).items():
+ people = {}
+ for name, instruments in ((cut or {}).get("ensemble") or {}).items():
+ people[name] = instruments if isinstance(instruments, list) else [instruments]
+ out.append((record_title, (cut or {}).get("record", ""), people))
+ return out
+
+
+def read_arthel(data_dir):
+ """Every show and every studio cut under an arthel src/data directory."""
+ import yaml # only needed for this source
+ records = {}
+ shows_dir = os.path.join(data_dir, "shows")
+ for fn in sorted(os.listdir(shows_dir)) if os.path.isdir(shows_dir) else []:
+ if not fn.endswith(".yaml"):
+ continue
+ with open(os.path.join(shows_dir, fn)) as f:
+ data = yaml.safe_load(f) or {}
+ source = ARTHEL_BLOB + "shows/" + fn
+ rec = arthel_show(fn[:-5], data, source)
+ records[rec["group"]] = rec
+ songs_dir = os.path.join(data_dir, "songs_and_tunes")
+ for fn in sorted(os.listdir(songs_dir)) if os.path.isdir(songs_dir) else []:
+ if not fn.endswith(".yaml"):
+ continue
+ with open(os.path.join(songs_dir, fn)) as f:
+ data = yaml.safe_load(f) or {}
+ source = ARTHEL_BLOB + "songs_and_tunes/" + fn
+ for record_title, date, people in arthel_cuts(fn[:-5], data, source):
+ rid = "record:" + rambler.sideman.normalize_title(record_title)
+ rec = records.setdefault(rid, new_record(rid, record_title, date=str(date)))
+ rec["sources"].setdefault("arthel", source)
+ for name, instruments in people.items():
+ add_person(rec, name, instruments, "track", source)
+ return records
+
+
+# ---------------------------------------------------------------------------
+# PickiPedia
+# ---------------------------------------------------------------------------
+
+def ask(query, get=None):
+ """Every row of a Semantic MediaWiki #ask query, paged by offset."""
+ get = get or _ask_get
+ rows, offset = [], 0
+ while True:
+ data = get(f"{query}|limit=500|offset={offset}")
+ results = (data.get("query") or {}).get("results") or {}
+ rows += list(results.values())
+ if not data.get("query-continue-offset"):
+ return rows
+ offset = data["query-continue-offset"]
+
+
+def _ask_get(query):
+ url = f"{WIKI_API}?{urlencode({'action': 'ask', 'query': query, 'format': 'json'})}"
+ with urlopen(Request(url, headers={"User-Agent": USER_AGENT}), timeout=60) as resp:
+ return json.load(resp)
+
+
+def page_url(title):
+ return WIKI_PAGE + quote(title.replace(" ", "_"), safe=":/'(),!")
+
+
+def _names(printout):
+ return [v["fulltext"] if isinstance(v, dict) else str(v) for v in printout or []]
+
+
+def _page_of(subobject_title):
+ return subobject_title.split("#", 1)[0]
+
+
+def wiki_cuts(rows):
+ """Has performer rows (one per musician per cut) -> records at track scope."""
+ records = {}
+ for row in rows:
+ po = row.get("printouts") or {}
+ page = _page_of(row.get("fulltext") or row.get("title", ""))
+ source = page_url(page)
+ for record_title in _names(po.get("Has cut")) or _names(po.get("Has record")) or [""]:
+ if not record_title:
+ continue
+ rid = "record:" + rambler.sideman.normalize_title(record_title)
+ rec = records.setdefault(rid, new_record(rid, record_title, sources={
+ "PickiPedia": page_url(record_title)}))
+ for name in _names(po.get("Has performer")):
+ add_person(rec, name, _names(po.get("Has instrument")), "track", source)
+ return records
+
+
+def wiki_personnel(rows):
+ """Has personnel rows ({{Record personnel}} on a record page) -> release scope."""
+ records = {}
+ for row in rows:
+ po = row.get("printouts") or {}
+ page = _page_of(row.get("fulltext") or row.get("title", ""))
+ source = page_url(page)
+ rid = "record:" + rambler.sideman.normalize_title(page)
+ rec = records.setdefault(rid, new_record(rid, page, sources={"PickiPedia": source}))
+ for name in _names(po.get("Has personnel")):
+ add_person(rec, name, _names(po.get("Has instrument")), "release", source)
+ return records
+
+
+def read_wiki(get=None):
+ records = wiki_cuts(ask("[[Has performer::+]]|?Has performer|?Has instrument|?Has cut", get))
+ for rid, rec in wiki_personnel(ask("[[Has personnel::+]]|?Has personnel|?Has instrument", get)).items():
+ if rid in records:
+ for name, p in rec["people"].items():
+ add_person(records[rid], name, p["roles"], "release", next(iter(p["sources"])))
+ else:
+ records[rid] = rec
+ return records
+
+
+# ---------------------------------------------------------------------------
+# Putting it together
+# ---------------------------------------------------------------------------
+
+def merge(*graphs):
+ """Union of record dicts (from read_* or a --json file of either tool)."""
+ records = {}
+ for g in graphs:
+ for rid, rec in g.items():
+ if rid in records:
+ for name, p in rec["people"].items():
+ add_person(records[rid], name, p["roles"], next(iter(p["scopes"])), next(iter(p["sources"])))
+ records[rid]["people"][name]["scopes"].update(p["scopes"])
+ records[rid]["people"][name]["sources"].update(p["sources"])
+ records[rid]["sources"].update(rec.get("sources") or {})
+ else:
+ records[rid] = {**rec, "people": {
+ n: {**p, "roles": set(p["roles"]), "scopes": set(p["scopes"]), "sources": set(p["sources"])}
+ for n, p in rec["people"].items()}}
+ return records
+
+
+def graph_of(records):
+ return rambler.summarize(records, {})
+
+
+def render(graph):
+ text = rambler.render(graph)
+ shows = [r for r in graph["records"].values() if r.get("kind") == "show"]
+ if shows:
+ text += f"\n\n{len(shows)} of the records above are shows (same stage, not the same cut)."
+ return text
+
+
+def main(argv):
+ ap = argparse.ArgumentParser(description="Homeplace: who played with whom, from arthel and PickiPedia.")
+ ap.add_argument("--arthel", metavar="DIR", help="an arthel checkout's src/data directory")
+ ap.add_argument("--wiki", action="store_true", help="read Has performer and Has personnel from PickiPedia")
+ ap.add_argument("--merge", metavar="FILE", action="append", default=[],
+ help="a --json graph from Rambler or Homeplace to fold in")
+ ap.add_argument("--json", action="store_true")
+ args = ap.parse_args(argv[1:])
+ if not (args.arthel or args.wiki or args.merge):
+ ap.error("nothing to read: give --arthel DIR, --wiki, or --merge FILE")
+ parts = []
+ if args.arthel:
+ parts.append(read_arthel(args.arthel))
+ if args.wiki:
+ parts.append(read_wiki())
+ for fn in args.merge:
+ with open(fn) as f:
+ parts.append(json.load(f)["records"])
+ graph = graph_of(merge(*parts))
+ print(json.dumps(rambler.jsonable(graph), indent=2, ensure_ascii=False) if args.json else render(graph))
+ return 0
+
+
+if __name__ == "__main__":
+ sys.exit(main(sys.argv))
diff --git a/tools/test_homeplace.py b/tools/test_homeplace.py
new file mode 100644
index 0000000..469d437
--- /dev/null
+++ b/tools/test_homeplace.py
@@ -0,0 +1,138 @@
+#!/usr/bin/env python3
+"""
+Tests for Homeplace, the reader of our own sources.
+
+What these guard: a show's ensemble and its featured guests both land on the
+show, told apart by scope; a studio cut's ensemble lands on its record at
+track scope; wiki rows group by record; names are copied as written and
+never merged; every edge carries its source. Canned YAML and canned ask
+rows only; nothing touches the network.
+"""
+
+import json
+
+import homeplace
+import rambler
+
+BUNDY = {
+ "title": "Justin Holmes at The Bundy Museum",
+ "venue": "The Bundy Museum",
+ "ensemble": {"Justin Holmes": ["guitar"], "Skyler Golden": ["bass"],
+ "Christina Docenko": ["fiddle"], "Paul Sanna": ["banjo"]},
+ "sets": {0: {"songplays": [
+ {"Vowel Sounds": {"mode": "segue"}},
+ "Salt Creek",
+ {"Startropics Theme": None, "mode": "segue",
+ "ensemble-modifications": {"featuring": ["Fibonacci Emery Holmes (keys)"]}}, # arthel's flat form
+ {"Can the Circle Be Unbroken": {"ensemble-modifications": {"featuring": ["Fibonacci Emery Holmes (vocals)"]}}},
+ {"O Death": {"ensemble-modifications": {"solo": "Justin"}}},
+ ]}},
+}
+
+AUGUST = {"studio_versions": {0: {"Vowel Sounds": {
+ "record": "3 April, 2024", "engineer": "Jake Stargel",
+ "ensemble": {"Justin Holmes": ["guitar", "six-whistle"], "Harry Clark": ["mandolin"],
+ "Maddie Denton": ["fiddle"]}}}}}
+
+
+def test_show_ensemble_and_featured_guests():
+ rec = homeplace.arthel_show("0-25254342", BUNDY, "src")
+ assert rec["kind"] == "show" and rec["date"] == "block 25254342"
+ assert rec["people"]["Christina Docenko"]["roles"] == {"fiddle"}
+ assert rec["people"]["Christina Docenko"]["scopes"] == {"show"}
+ fib = rec["people"]["Fibonacci Emery Holmes"]
+ assert fib["roles"] == {"keys", "vocals"} and fib["scopes"] == {"song"}
+ assert "Justin" not in rec["people"] # a solo nickname is not a person
+ assert all(p["sources"] == {"src"} for p in rec["people"].values())
+
+
+def test_featured_entry_forms():
+ assert homeplace.parse_featured("Shaka Lei Kaumaka") == ("Shaka Lei Kaumaka", [])
+ assert homeplace.parse_featured("Mark Hansen (cajon)") == ("Mark Hansen", ["cajon"])
+ assert homeplace.parse_featured("A Person (guitar, vocals)") == ("A Person", ["guitar", "vocals"])
+
+
+def test_studio_cut_lands_on_its_record_at_track_scope():
+ cuts = homeplace.arthel_cuts("august", AUGUST, "src")
+ assert cuts == [("Vowel Sounds", "3 April, 2024",
+ {"Justin Holmes": ["guitar", "six-whistle"], "Harry Clark": ["mandolin"],
+ "Maddie Denton": ["fiddle"]})]
+
+
+def test_read_arthel_builds_records_and_shows(tmp_path):
+ import yaml
+ (tmp_path / "shows").mkdir()
+ (tmp_path / "songs_and_tunes").mkdir()
+ (tmp_path / "shows" / "0-25254342.yaml").write_text(yaml.safe_dump(BUNDY))
+ (tmp_path / "songs_and_tunes" / "august.yaml").write_text(yaml.safe_dump(AUGUST))
+ (tmp_path / "songs_and_tunes" / "salt-creek.yaml").write_text("music_by: Traditional\n")
+ records = homeplace.read_arthel(str(tmp_path))
+ assert set(records) == {"show:0-25254342", "record:vowel sounds"}
+ vs = records["record:vowel sounds"]
+ assert vs["people"]["Harry Clark"]["scopes"] == {"track"}
+ assert vs["sources"]["arthel"].endswith("songs_and_tunes/august.yaml")
+ graph = homeplace.graph_of(records)
+ # Justin Holmes is on both, so the show and the record are a pair
+ assert graph["pairs"] == [{"records": ["record:vowel sounds", "show:0-25254342"],
+ "shared": ["Justin Holmes"]}]
+
+
+def ask_row(page, **printouts):
+ return {"fulltext": page, "printouts": {
+ k: [{"fulltext": v} if k in ("Has performer", "Has personnel") else v for v in vs]
+ for k, vs in printouts.items()}}
+
+
+def test_wiki_cuts_group_by_record():
+ rows = [
+ ask_row("Song:August# 1", **{"Has performer": ["Harry Clark"], "Has instrument": ["mandolin"], "Has cut": ["4masks"]}),
+ ask_row("Song:August# 2", **{"Has performer": ["Maddie Denton"], "Has instrument": ["fiddle"], "Has cut": ["4masks"]}),
+ ask_row("Song:Bank Run# 1", **{"Has performer": ["Harry Clark"], "Has instrument": ["guitar"], "Has cut": ["Vowel Sounds"]}),
+ ]
+ records = homeplace.wiki_cuts(rows)
+ assert set(records) == {"record:4masks", "record:vowel sounds"}
+ harry = records["record:4masks"]["people"]["Harry Clark"]
+ assert harry["roles"] == {"mandolin"} and harry["scopes"] == {"track"}
+ assert harry["sources"] == {"https://pickipedia.xyz/wiki/Song:August"}
+ pairs = homeplace.graph_of(records)["pairs"]
+ assert pairs[0]["shared"] == ["Harry Clark"]
+
+
+def test_wiki_personnel_is_release_scope():
+ rows = [ask_row("Old Train (Seldom Scene album)# 1",
+ **{"Has personnel": ["John Duffey"], "Has instrument": ["mandolin"]})]
+ records = homeplace.wiki_personnel(rows)
+ rec = records["record:old train seldom scene album"]
+ assert rec["people"]["John Duffey"]["scopes"] == {"release"}
+
+
+def test_ask_pages_by_offset():
+ pages = {0: {"query": {"results": {"a": {"fulltext": "A# 1", "printouts": {}}}}, "query-continue-offset": 500},
+ 500: {"query": {"results": {"b": {"fulltext": "B# 1", "printouts": {}}}}}}
+
+ def get(q):
+ return pages[int(q.rsplit("offset=", 1)[1])]
+
+ assert [r["fulltext"] for r in homeplace.ask("[[X::+]]", get)] == ["A# 1", "B# 1"]
+
+
+def test_merge_with_a_rambler_graph_keeps_names_exact():
+ ours = homeplace.wiki_cuts([
+ ask_row("Song:August# 1", **{"Has performer": ["Justin Holmes"], "Has instrument": ["guitar"], "Has cut": ["4masks"]})])
+ rambler_graph = {"records": {"g1": {
+ "id": "x", "group": "g1", "title": "Unit of Measure", "date": "2000", "artist": "The Tony Rice Unit",
+ "compilation": False, "sources": {"MusicBrainz": "https://musicbrainz.org/release/x"},
+ "people": {"Tony Rice": {"mbid": "t", "roles": ["guitar"], "scopes": ["release"], "sources": ["MusicBrainz"]},
+ "Justin Myles Holmes": {"mbid": None, "roles": ["guitar"], "scopes": ["track"], "sources": ["Discogs"]}}}}}
+ merged = homeplace.merge(ours, json.loads(json.dumps(rambler_graph))["records"])
+ graph = homeplace.graph_of(merged)
+ assert set(graph["people"]) == {"Justin Holmes", "Justin Myles Holmes", "Tony Rice"}
+ assert graph["pairs"] == [] # two spellings are two people; no edge invented
+ assert graph["records"]["g1"]["people"]["Tony Rice"]["roles"] == {"guitar"}
+
+
+def test_render_counts_shows_separately():
+ rec = homeplace.arthel_show("0-1", BUNDY, "src")
+ text = homeplace.render(homeplace.graph_of({rec["group"]: rec}))
+ assert "1 of the records above are shows" in text
+ assert rambler.wikitext(homeplace.graph_of({rec["group"]: rec})) # Rambler's output works on our graph
--
2.53.0

</nowiki></pre>

Emergent:Blu/Patches/homeplace - Revision history

Blu: Patch: add Homeplace, the reader of arthel and PickiPedia (via create-page on MediaWiki MCP Server)