docs(10_Wiki): Dev 폴더 누락분 반영 — Topic_Programming으로 통합

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  JavaScript/PHP/Python/SQL/W3CSS, 1201개)는 전부 Topic_Programming 하위로 이동.
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- Topic_Programming 최종 문서 수: 2784 → 3985.

10_Wiki/Topic_Programming/Topic_Python/Python_Read_Files.md

@@ -0,0 +1,76 @@
+---
+id: python-read-files
+title: "Python Read Files"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["with statement", "readline()", "파이썬 파일 읽기"]
+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", "file-handling", "read", "with"]
+raw_sources: ["https://www.w3schools.com/python/python_file_open.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[Python Read Files]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+`with open(...) as f:` auto-closes the file when the block ends — the manual alternative requires an explicit `f.close()`, and skipping it risks unflushed buffered changes not appearing in the file at all. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **`open()`** — returns a file object with a `.read()` method. [S1]
+- **`with` statement** — opens a file and automatically closes it when the block exits, no manual `close()` needed. [S1]
+- **Manual close** — without `with`, you must call `f.close()` explicitly. [S1]
+- **Partial read** — `f.read(5)` returns only the first 5 characters. [S1]
+- **`readline()`** — reads one line; calling it repeatedly advances through subsequent lines. [S1]
+- **Line-by-line loop** — `for x in f:` iterates the whole file line by line. [S1]
+
+## 🧩 추출된 패턴 (Extracted patterns)
+- **Buffering risk without close()** — the source warns that skipped changes may not be visible until the file is closed, due to buffering — a concrete reason to prefer `with` over manual open/close. [S1]
+
+## 📖 세부 내용 (Details)
+- Basic read: `f = open("demofile.txt"); print(f.read())`. [S1]
+- Different location: `f = open("D:\\myfiles\\welcome.txt")`. [S1]
+- With statement (auto-close): `with open("demofile.txt") as f: print(f.read())`. [S1]
+- Manual close: `f = open("demofile.txt"); print(f.readline()); f.close()`. [S1]
+- Partial read: `with open("demofile.txt") as f: print(f.read(5))`. [S1]
+- Line-by-line loop: `with open("demofile.txt") as f: for x in f: print(x)`. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+소스에서 모순되는 정보는 발견되지 않음.
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — Python Try Except 챕터의 finally 블록 예제에서 이미 파일 close 패턴이 자원 정리 사례로 선행 등장했다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Auto-closing with statement, line-by-line read (Python):
+```python
+with open("demofile.txt") as f:
+    for x in f:
+        print(x)
+```
+
+## ✅ 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 File Handling]], [[Python Write Create Files]], [[Python Try Except]]
+- **참조 맥락:** 파일 읽기의 표준 패턴 — with 문이 자원 관리를 자동화한다.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — Python File Open — https://www.w3schools.com/python/python_file_open.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "Python File Open" page (Astra wiki-curation, P-Reinforce v3.1 format).