(self)
Inits YearRange with empty bounds -- to be built after init
Inits YearRange with empty bounds -- to be built after init
Inits YearRange with empty bounds -- to be built after init
def __init__(self) -> None:
        """Inits YearRange with empty bounds -- to be built after init"""
        self.from_year: typing.Optional[int] = None
        self.to_year: typing.Optional[int] = None
def __init__ ( self ) -> None : self . from_year : typing . Optional [ int ] = None self . to_year : typing . Optional [ int ] = None