# Show that .copy() is shallow: create original = {'items': [1, 2, 3]}, make a shallow copy with .copy

Canonical URL: <https://datadriven.io/problems/show-that-copy-is-shallow-create-original-items-1-9439fac4>

Domain: Python · Difficulty: medium

## Problem

Show that .copy() is shallow: create original = {'items': [1, 2, 3]}, make a shallow copy with .copy(), append 4 to the shallow copy's 'items' list. Print the original's 'items' to show the shared mutation.

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