Safe mutable defaults
Define a Project dataclass whose tags list is independent for every instance.
What you’ll practice
This Level 6 exercise focuses on field(default_factory) in the Professional curriculum. Solve the challenge prompt above using clear, idiomatic Python and the relevant language or standard-library tools.
Relevant Python reference: Python Standard Library — Professional.
Sample Test Cases
new_project(new_project('Plan & Learn'))Project(..., tags=[])Further Reading
Reference Solution
Reveal Reference Solution
def new_project(name: str): from dataclasses import dataclass, field @dataclass class Project: name: str tags: list[str] = field(default_factory=list) return Project(name)Pro Tips & Keyboard Shortcuts
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