2nd/10_Wiki/Dev/Topic_Python/Python_Numbers.md

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-numbers	Python Numbers	Programming_Language	draft	conceptual		int float complex 파이썬 숫자		B	0.9	2026-07-04	2026-07-04			python programming w3schools numbers	https://www.w3schools.com/python/python_numbers.asp

Python Numbers

🎯 한 줄 통찰 (One-line insight)

Python has three numeric types — unbounded-length int, decimal/scientific-notation float, and j-suffixed complex — freely convertible into each other except complex, which cannot convert into anything else. [S1]

🧠 핵심 개념 (Core concepts)

• int — a whole number, positive or negative, without decimals, of unlimited length. [S1]
• float — a number with one or more decimals; can also use scientific notation (e/E for powers of 10). [S1]
• complex — written with a j suffix for the imaginary part (e.g. 3+5j). [S1]
• Type conversion — int(), float(), complex() convert between numeric types. [S1]
• Complex is a one-way street — complex numbers cannot be converted into another number type. [S1]
• Random numbers — Python has no built-in random() keyword, but the random module (random.randrange(1, 10)) generates them. [S1]

📖 세부 내용 (Details)

• Basic declarations: x = 1 # int, y = 2.8 # float, z = 1j # complex. [S1]
• Scientific notation floats: x = 35e3; y = 12E4; z = -87.7e100. [S1]
• Conversion: a = float(x); b = int(y); c = complex(x). [S1]
• Random number: import random; print(random.randrange(1, 10)). [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

소스에서 모순되는 정보는 발견되지 않음. complex는 다른 타입으로 변환 불가하다는 예외가 명시적으로 강조됨. [S1]

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — random 모듈은 이후 여러 예제(리스트 셔플, 게임 로직 등)에서 재사용되는 표준 도구다. [S1]

💻 코드 패턴 (Code patterns)

Random number via the random module (Python):

import random
print(random.randrange(1, 10))

✅ 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 Data Types, Python Casting, Python Math
• 참조 맥락: 숫자 타입 3종의 기초 — Casting/Math 챕터로 이어진다.

📚 출처 (Sources)

• [S1] W3Schools — Python Numbers — https://www.w3schools.com/python/python_numbers.asp

📝 변경 이력 (Change history)

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