The Prototype pattern creates new objects by copying an existing instance (the prototype) instead of building each one from scratch.
Implement Entity.clone() so it returns an independent deep copy of the entity. Use copy.deepcopy so nested data is duplicated, not shared.
Mutating a simple field on the clone must not affect the original.
import copy
class Entity:
def __init__(self, name, tags=None):
self.name = name
self.tags = list(tags) if tags is not None else []
def clone(self):
"""Return an independent copy of this entity."""
# TODO: return a deep copy of self using copy.deepcopy
pass
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The Prototype pattern creates new objects by copying an existing instance (the prototype) instead of building each one from scratch.
Implement Entity.clone() so it returns an independent deep copy of the entity. Use copy.deepcopy so nested data is duplicated, not shared.
Mutating a simple field on the clone must not affect the original.
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