refactor(topics): 멀티 에이전트용 지식 재편 — _Common(공통 기본기) + Domain_* 구조

에이전트 8종(대화형/프로그래머 C·S/디자이너/설계자/기획자/QA/PD/PM)에게 [공통 기본 능력 + 롤별 Specialty] 2층으로 지식을 주입하기 위한 재분류. 문서 내용·포맷은 무수정, 폴더 이동만 (6,372개 문서 수 보존 확인). - Topic_Programming → Domain_Programming (내부 구조 보존) - Topic_Graphic → Domain_Design - Topic_Business → Domain_Product - Topic_General → Domain_General - _Common 신설: Math(구 Topic_Math_Specialty), Reasoning(구 General/From_Thinking & Reasoning), Reasoning_Creativity(구 General/From_창의성), Communication(Poetic_Blog_Writing + From_writing) - 타 도메인의 From_* 폴더는 유지 (출처 표기일 뿐, 이미 도메인에 맞게 분류된 문서) - 빈 폴더 정리 (memory/procedures) - 에이전트→폴더 매핑은 workspace의 .astra/agent-knowledge-map.json (9개 에이전트) Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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+---
+id: python-regex
+title: "Python RegEx"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["re module", "regular expressions", "파이썬 정규식"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.9
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["python", "programming", "w3schools", "regex", "re"]
+raw_sources: ["https://www.w3schools.com/python/python_regex.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[Python RegEx]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+The `re` module's four core functions each answer a different question — findall() (all matches as a list), search() (first Match object or None), split() (list split at matches), sub() (replace matches) — and a Match object itself carries `.span()`, `.string`, `.group()` for inspecting what actually matched. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **`re` module** — Python's built-in package for regular expressions. [S1]
+- **`re.findall(pattern, txt)`** — returns a list of ALL matches (empty list if none). [S1]
+- **`re.search(pattern, txt)`** — returns a Match object for the FIRST match, or `None` if no match. [S1]
+- **`re.split(pattern, txt, maxsplit)`** — splits the string at each match; `maxsplit` limits the split count. [S1]
+- **`re.sub(pattern, repl, txt, count)`** — replaces matches; `count` limits replacements. [S1]
+- **Metacharacters** — `[]` set, `\` special sequence/escape, `.` any char, `^` starts-with, `$` ends-with, `*`/`+`/`?` occurrence counts, `{}` exact count, `|` or, `()` group. [S1]
+- **Special sequences** — `\d` digit, `\D` non-digit, `\s` whitespace, `\S` non-whitespace, `\w` word char, `\W` non-word char, `\b`/`\B` word boundary, `\A`/`\Z` string start/end. [S1]
+- **Flags** — `re.IGNORECASE`, `re.MULTILINE`, `re.DOTALL`, etc. [S1]
+- **Match object properties** — `.span()` (start/end tuple), `.string` (original input string), `.group()` (the matched substring). [S1]
+
+## 📖 세부 내용 (Details)
+- Basic search: `x = re.search("^The.*Spain$", txt)`. [S1]
+- All matches: `x = re.findall("ai", txt)`. [S1]
+- First match only: `x = re.search("\s", txt); x.start()`. [S1]
+- Split at matches: `x = re.split("\s", txt)`. [S1]
+- Replace matches: `x = re.sub("\s", "9", txt)`. [S1]
+- Match object inspection: `x = re.search(r"\bS\w+", txt); print(x.span()); print(x.group())`. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+소스에서 모순되는 정보는 발견되지 않음.
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — 텍스트 검증/추출(이메일 형식 검사 등)에서 표준적으로 쓰이는 도구다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Match object inspection (Python):
+```python
+import re
+txt = "The rain in Spain"
+x = re.search(r"\bS\w+", txt)
+print(x.span())   # (12, 18)
+print(x.group())  # Spain
+```
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual
+- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
+- **신뢰 점수:** 0.90
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[Python Tutorial]]
+- **관련 개념:** [[Python Strings Methods]], [[Python Modules]]
+- **참조 맥락:** 패턴 기반 문자열 검색/치환의 표준 도구 — 문자열 메서드로 처리하기 어려운 패턴 매칭에 사용.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — Python RegEx — https://www.w3schools.com/python/python_regex.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "Python RegEx" page (Astra wiki-curation, P-Reinforce v3.1 format).