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Python Default Argument Trap 😱🐍 | Same Function, Different Result . . . . . 💡 Explanation: This is a classic mutable default argument trap in Python. Step by step: 1️⃣ print(f(2)) Uses the default list data = [] Loop runs for i = 0, 1 data becomes: [0, 1] 2️⃣ print(f(1)) Uses the same default list, not a new one Loop runs for i = 0 0 is added to the existing list So the list becomes: Copy code [0, 1, 0] 📌 Key Concept: Default mutable arguments are created once and reused across function call

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