Python Question / Quiz; What is the output of the following Python code, and why? Comment your answers below!
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@PythonPr The correct answer is (a) [1, 2, 3]. The code y = x.copy() creates a shallow copy of the list x. This means that y is a new list object with the same elements as x, but it is a distinct object in memory. When x.append(4) is called, it modifies the original list x by
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@PythonPr The .copy() method creates a separate reality. y gets a snapshot of x's state, then their paths diverge. When x is updated with 4, y is oblivious, frozen in its original moment. It’s about a point in time, not a permanent link. That's why y is [1, 2, 3].
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@PythonPr >>> x = [1,2,3] >>> y = x.copy() >>> x.append(4) >>> print(y) [1, 2, 3] >>> print(x) [1, 2, 3, 4] >>>
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@PythonPr A [1,2,3] karena y adalah fotokopi dari x. Ketika x ditambahkan (4), cuma ada di kertas x, tp tidak difotokopian y. So, the result still same: y=x.copy(), whichis [1,2,3].
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@PythonPr the answer is B, because of the ".append" method, it adds the new "item" to the tail/end of the list
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@PythonPr y = x.copy() -->Creates a copy of list x x.append(4) -->Adds 4 to list x print(y) -->Prints y, which remains unchanged. x becomes [1,2,3,4] y remains [1,2,3] --> Ans. a
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