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Antigravity Agent e9cbf23ab5 docs(10_Wiki): Dev 폴더 누락분 반영 — Topic_Programming으로 통합

이전 재구성 작업에서 Dev/ 폴더가 누락되었던 것을 반영.

- Dev/Topic_Programming(중첩 폴더, 78개)은 Dev 자체 최상위 폴더들
  (Architecture/Conventions/Engineering_Intelligence 등)과 완전 중복이라 제거.
- Dev 최상위 엔지니어링 지식 폴더(Architecture/Conventions/Engineering_Intelligence/
  Failure_Library/Generalized_Principles/Language/Pattern_Catalog/Platform_Guides/
  Subsystems, 77개)는 이미 Topic_Programming/Topic_Programming에 더 최신 버전이
  존재해 중복 제거(고유 콘텐츠 1개는 예외 처리하여 이동 보존).
- Dev의 W3Schools 언어 튜토리얼 폴더(Topic_C/CPP/CSS/CSharp/HOWTO/HTML/Java/
  JavaScript/PHP/Python/SQL/W3CSS, 1201개)는 전부 Topic_Programming 하위로 이동.
- 에이전트 운영 상태(.astra/docs)는 그대로 유지, 콘텐츠 폴더만 정리.
- Topic_Programming 최종 문서 수: 2784 → 3985.

2026-07-05 00:39:13 +09:00

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title

Python Global Variables

🎯 한 줄 통찰 (One-line insight)

A variable created outside any function is global and visible everywhere, but assigning to a same-named variable inside a function creates a separate local shadow — unless the global keyword explicitly binds it to the outer scope. [S1]

🧠 핵심 개념 (Core concepts)

Global variable — created outside a function; usable both inside and outside functions. [S1]
Shadowing — creating a same-named variable inside a function makes it local to that function; the global variable of the same name is untouched. [S1]
global keyword — declares that a variable inside a function refers to the global scope, both for creating and for modifying it. [S1]

🧩 추출된 패턴 (Extracted patterns)

Local-by-default assignment — assignment inside a function is local unless global is explicitly declared, which is a common source of confusion for beginners expecting the outer variable to change. [S1]

📖 세부 내용 (Details)

Read a global variable inside a function: x = "awesome"; def myfunc(): print("Python is " + x); myfunc(). [S1]
Shadowing (local wins inside the function, global unaffected outside): x = "awesome"; def myfunc(): x = "fantastic"; print("Python is " + x); myfunc(); print("Python is " + x) — prints "fantastic" then "awesome". [S1]
Using global to modify the outer variable: x = "awesome"; def myfunc(): global x; x = "fantastic"; myfunc(); print("Python is " + x) — prints "fantastic" after the call. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

소스에서 모순되는 정보는 발견되지 않음.

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — Python Scope 챕터에서 지역/전역 범위 규칙이 더 체계적으로 다뤄진다. [S1]

💻 코드 패턴 (Code patterns)

Modify a global variable inside a function (Python):

x = "awesome"
def myfunc():
    global x
    x = "fantastic"

myfunc()
print("Python is " + 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 Variables, Python Scope, Python Functions
참조 맥락: 함수 내부/외부 변수 범위 규칙의 기초 — Scope 챕터에서 더 체계적으로 확장.

📚 출처 (Sources)

[S1] W3Schools — Python - Global Variables — https://www.w3schools.com/python/python_variables_global.asp

📝 변경 이력 (Change history)

2026-07-04: Initial draft synthesized from the W3Schools "Python - Global Variables" page (Astra wiki-curation, P-Reinforce v3.1 format).

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