print(4 != 0 not in [0, 1, 2, 3]) => False
νμ΄μ¬ File|Exception|Log Handling|Data Handling
μ λν μ€νΈ μΈλΆνκ²½ λ체μ
νμ΄μ¬ OOP μ λͺ¨λ|ν¨ν€μ§|νλ‘μ νΈ
λ¨μ ν μ€νΈ