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# --------------------------------------------------------------------------------------
# Copyright (c) 2013-2025, Nucleic Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file LICENSE, distributed with this software.
# --------------------------------------------------------------------------------------
"""Demonstration of the basics of the Property member."""
from atom.api import Atom, Int, Property, Str
class Person(Atom):
"""A simple class representing a person object."""
first_name = Str()
# Static type checker cannot infer from the magic method that the property
# is read/write so a type annotation helps.
age: "Property[int, int]" = Property() # type: ignore
_age = Int(40)
def _get_age(self) -> int:
return self._age
def _set_age(self, age: int) -> None:
if age < 100 and age > 0:
self._age = age
if __name__ == "__main__":
bob = Person(first_name="Bob")
print(bob.age)
bob.age = -10
print(bob.age)
bob.age = 20
print(bob.age)
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