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@@ -0,0 +1,69 @@
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+from dataclasses import dataclass, field
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+
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+@dataclass
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+class Person:
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+ first_name: str
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+ last_name: str
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+ age: int = field(default=20)
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+ full_name: str = field(init=False)
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+
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+ def __post_init__(self):
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+ self.full_name = f'{self.first_name} {self.last_name}'
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+ self.is_programmer = True
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+
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+
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+def test_1():
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+ artem = Person('Artem', 'Egorov')
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+ print(artem)
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+
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+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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+
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+# Сортировка
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+@dataclass(order=True)
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+class PersonSort:
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+ sort_index: int = field(init=False, repr=False)
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+ name: str
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+ age: int
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+ weight: int = 190
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+
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+ def __post_init__(self):
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+ self.sort_index = (self.weight, self.age)
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+
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+
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+def test_2():
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+ persons = [
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+ PersonSort('Иван', 25, 200),
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+ PersonSort('Петр', 30, 150),
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+ PersonSort('Кирилл', 35, 150),
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+ PersonSort('Борис', 20, 200),
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+ PersonSort('Алексей', 15, 200),
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+ PersonSort('Дмитрий', 11, 175),
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+ ]
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+
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+ print(*sorted(persons), sep='\n')
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+
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+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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+# Наследование dataclass
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+# Если родительский класс имеет поле или несколько полей по умолчанию, то
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+# все поля в дочернем классе должны иметь значения по умолчанию.
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+
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+@dataclass
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+class Person:
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+ first_name: str
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+ last_name: str
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+ age: int = field(default=20)
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+
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+@dataclass
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+class Student(Person):
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+ course: int = 1
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+ stipend: int = 1000
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+
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+
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+
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+def main():
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+ # test_1()
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+ test_2()
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+
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+
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+if __name__ == '__main__':
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+ main()
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