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title

Python Output Variables

🎯 한 줄 통찰 (One-line insight)

Multiple variables can be printed together via comma (which handles mixed types safely) or + (which requires matching types and fails on string+number mixes). [S1]

🧠 핵심 개념 (Core concepts)

Comma-separated print — print(x, y, z) outputs multiple variables. [S1]
+ operator concatenation — print(x + y + z) also combines variables, but only works if types match. [S1]
+ on numbers — acts as addition, not concatenation, when operands are numeric. [S1]
Type mismatch error — print(x + y) where x is a number and y is a string raises an error. [S1]
Comma is the safe default — commas support different data types simultaneously, unlike +. [S1]

🧩 추출된 패턴 (Extracted patterns)

Comma vs. plus trade-off — comma auto-adds a space and tolerates mixed types; + requires manual spacing and same-type operands, but is needed when you want no separating space at all (by omitting it) or true numeric addition. [S1]

📖 세부 내용 (Details)

Comma-separated output: x = "Python"; y = "is"; z = "awesome"; print(x, y, z). [S1]
Plus-concatenated output (same type): print(x + y + z), noting trailing spaces must be added manually in each string. [S1]
Plus as addition (numbers): x = 5; y = 10; print(x + y). [S1]
Type mismatch error: x = 5; y = "John"; print(x + y) fails. [S1]
Safe mixed-type output: print(x, y) where x=5 and y="John". [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

소스에서 모순되는 정보는 발견되지 않음.

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — 이후 문자열 포맷팅(f-string 등) 챕터에서 더 정교한 출력 방식이 다뤄진다. [S1]

💻 코드 패턴 (Code patterns)

Safe mixed-type output via comma (Python):

x = 5
y = "John"
print(x, y)

✅ 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 Output, Python Variables, Python String Formatting
참조 맥락: 변수를 출력할 때 콤마 vs + 연산자 선택 기준.

📚 출처 (Sources)

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

📝 변경 이력 (Change history)

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

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