docs(10_Wiki): Topic_Business/General/Graphic/Programming을 Topics/ 하위로 이동

최상위 10_Wiki/Topic_*였던 4개 카테고리 폴더를 10_Wiki/Topics/Topic_* 로 재배치. 콘텐츠 변경 없음(순수 폴더 이동) — Topics/ 하위 나머지 폴더는 이미 지난 커밋에서 전부 정리된 상태(잔존 항목은 에이전트 운영 상태 및 사용자가 보존을 요청한 업데이트0615/무제 3.canvas 뿐).
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+---
+id: python-virtualenv
+title: "Python VirtualEnv"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["venv", "virtual environment", "파이썬 가상환경"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.88
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["python", "programming", "w3schools", "venv", "virtualenv", "packages"]
+raw_sources: ["https://www.w3schools.com/python/python_virtualenv.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[Python VirtualEnv]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+A virtual environment is a self-contained folder with its own interpreter and packages — deleting the whole folder cleanly removes it with zero side effects on other projects or the system Python, since nothing outside the folder ever depended on it. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **Virtual environment** — an isolated environment for running/testing a Python project; own interpreter, own packages, isolated from other environments. [S1]
+- **Why use it** — prevents package version conflicts between projects, improves portability/reproducibility, keeps the system Python clean, allows testing with different Python versions. [S1]
+- **`venv` module** — built-in tool for creating virtual environments: `python -m venv myfirstproject`. [S1]
+- **Activation** — `myfirstproject\Scripts\activate` (Windows) changes the prompt to show the active environment. [S1]
+- **Installing packages** — once activated, `pip install <package>` installs ONLY into that environment. [S1]
+- **Deactivation** — `deactivate` returns to the normal command line. [S1]
+- **Deletion** — simply delete the folder; no other project depends on it. [S1]
+
+## 🧩 추출된 패턴 (Extracted patterns)
+- **Package isolation demonstrated by failure** — running a script that imports a venv-only package OUTSIDE the activated venv raises `ModuleNotFoundError`, concretely proving the isolation works. [S1]
+
+## 📖 세부 내용 (Details)
+- Create: `python -m venv myfirstproject`. [S1]
+- Activate (Windows): `myfirstproject\Scripts\activate`. [S1]
+- Install a package inside: `pip install cowsay`. [S1]
+- Run a script using it: `python test.py`. [S1]
+- Deactivate: `deactivate`. [S1]
+- Delete: `rmdir /s /q myfirstproject`. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+소스에서 모순되는 정보는 발견되지 않음.
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — Python PIP 챕터의 패키지 설치가 여기서 프로젝트별로 격리된 형태로 확장된다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Create, activate, and install in isolation (shell):
+```
+python -m venv myfirstproject
+myfirstproject\Scripts\activate
+pip install cowsay
+```
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual
+- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
+- **신뢰 점수:** 0.88
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[Python Tutorial]]
+- **관련 개념:** [[Python PIP]], [[Python Modules]]
+- **참조 맥락:** 프로젝트별 의존성 격리의 표준 도구 — PIP 설치를 프로젝트 범위로 한정.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — Python Virtual Environment — https://www.w3schools.com/python/python_virtualenv.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "Python Virtual Environment" page (Astra wiki-curation, P-Reinforce v3.1 format).