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Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-11 11:05:56 +09:00

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id, title, category, status, verification_status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, created_at, updated_at, review_reason, merge_history, tags, raw_sources, applied_in, github_commit
id title category status verification_status canonical_id aliases duplicate_of source_trust_level confidence_score created_at updated_at review_reason merge_history tags raw_sources applied_in github_commit
python-elif Python Elif Programming_Language draft conceptual
Python Elif Statement
파이썬 elif
B 0.9 2026-07-04 2026-07-04
python
programming
w3schools
elif
conditions
https://www.w3schools.com/python/python_if_elif.asp

Python Elif

🎯 한 줄 통찰 (One-line insight)

elif checks conditions top-to-bottom and stops at the FIRST true one — so even if multiple conditions would be true, only the first matching block executes, making elif chains cheaper than separate independent if statements. [S1]

🧠 핵심 개념 (Core concepts)

  • elif — "if the previous conditions were not true, then try this condition". [S1]
  • Multiple elif — as many as needed; Python checks each in order. [S1]
  • First-match-wins — execution stops at the first true condition, even if later ones would also be true. [S1]
  • When to use — for multiple mutually exclusive conditions; more efficient than separate if statements since checking stops early. [S1]

🧩 추출된 패턴 (Extracted patterns)

  • Mutual-exclusivity assumption — elif chains are designed for conditions that are logically exclusive (e.g. grade bands); using elif for conditions that could overlap silently discards all but the first match. [S1]

📖 세부 내용 (Details)

  • Basic elif: if b > a: ... elif a == b: print("a and b are equal"). [S1]
  • Grade band chain: if score >= 90: "A" elif score >= 80: "B" elif score >= 70: "C" elif score >= 60: "D" — score 75 prints "C" only. [S1]
  • Day-of-week chain: 7 elif branches, one per day number. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

소스에서 모순되는 정보는 발견되지 않음.

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — 등급 분류, 요일 판별처럼 상호 배타적인 다중 조건 로직의 표준 패턴이다. [S1]

💻 코드 패턴 (Code patterns)

First-match-wins elif chain (Python):

score = 75
if score >= 90:
    print("Grade: A")
elif score >= 80:
    print("Grade: B")
elif score >= 70:
    print("Grade: C")  # this one executes
elif score >= 60:
    print("Grade: D")

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)

📚 출처 (Sources)

📝 변경 이력 (Change history)

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