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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-dictionaries-nested Python Dictionaries Nested Programming_Language draft conceptual
Nested Dictionaries
파이썬 중첩 딕셔너리
B 0.9 2026-07-04 2026-07-04
python
programming
w3schools
dictionaries
nested
https://www.w3schools.com/python/python_dictionaries_nested.asp

Python Dictionaries Nested

참고: 원문 제목은 "Python - Nested Dictionaries"

🎯 한 줄 통찰 (One-line insight)

A dictionary can contain other dictionaries as values, and chained bracket access (outer["child2"]["name"]) drills into the nesting exactly like accessing a plain key. [S1]

🧠 핵심 개념 (Core concepts)

  • Nested dictionary — a dictionary whose values are themselves dictionaries. [S1]
  • Two construction styles — inline literal nesting, or assembling separate named dicts and combining them into an outer dict. [S1]
  • Chained accessmyfamily["child2"]["name"] accesses the outer dict, then the inner dict. [S1]
  • Nested loop via items() — an outer for x, obj in myfamily.items() combined with an inner for y in obj walks the full nested structure. [S1]

📖 세부 내용 (Details)

  • Inline nested literal: [S1]
myfamily = {
    "child1" : {"name" : "Emil", "year" : 2004},
    "child2" : {"name" : "Tobias", "year" : 2007},
    "child3" : {"name" : "Linus", "year" : 2011}
}
  • Assembled from separate dicts: child1 = {...}; child2 = {...}; child3 = {...}; myfamily = {"child1": child1, "child2": child2, "child3": child3}. [S1]
  • Chained access: print(myfamily["child2"]["name"]). [S1]
  • Nested loop: [S1]
for x, obj in myfamily.items():
    print(x)
    for y in obj:
        print(y + ':', obj[y])

⚖️ 모순 및 업데이트 (Contradictions & updates)

소스에서 모순되는 정보는 발견되지 않음.

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — JSON과 유사한 계층적 데이터 구조를 표현할 때 표준적으로 쓰이는 패턴이다. [S1]

💻 코드 패턴 (Code patterns)

Chained access into a nested dict (Python):

myfamily = {
    "child1": {"name": "Emil", "year": 2004},
    "child2": {"name": "Tobias", "year": 2007},
}
print(myfamily["child2"]["name"])  # Tobias

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 - Nested Dictionaries" page (Astra wiki-curation, P-Reinforce v3.1 format).