#!/usr/bin/env python3

Materialization command (P1): extract the EXACT python fence from the SSOT .md

and write it to the declared invocation filename. One canonical source (.md);

the .py is a derived materialization, not a second authority.

Usage: materialize_canonicalizer.py [src_md] [out_py]

import sys, re, hashlib src = sys.argv[1] if len(sys.argv) > 1 else "canonicalizer-fix7-canon-v1-ssot.md" out = sys.argv[2] if len(sys.argv) > 2 else "canonicalizer-fix7-canon-v1-ssot.py" md = open(src, "r", encoding="utf-8").read() m = re.search(r"python\n(.*?)\n", md, re.S) if not m: print("EXTRACTION_FAILED: no python fence", file=sys.stderr); sys.exit(3) code = m.group(1) + "\n" open(out, "w", encoding="utf-8").write(code) print("extracted_bytes:", len(code.encode("utf-8"))) print("py_sha256:", hashlib.sha256(code.encode("utf-8")).hexdigest()) print("md_full_sha256(local copy):", hashlib.sha256(md.encode("utf-8")).hexdigest())