impl_class.py

from typing import Optional


class Position:
    MIN_LATITUDE = -90
    MAX_LATITUDE = 90
    MIN_LONGITUDE = -180
    MAX_LONGITUDE = 180

    def __init__(
        self, longitude: float, latitude: float, address: Optional[str] = None
    ):
        self.longitude = longitude
        self.latitude = latitude
        self.address = address

    @property
    def latitude(self) -> float:
        """Getter for latitude."""
        return self._latitude

    @latitude.setter
    def latitude(self, latitude: float) -> None:
        """Setter for latitude."""
        if not (Position.MIN_LATITUDE <= latitude <= Position.MAX_LATITUDE):
            raise ValueError(f"latitude was {latitude}, but has to be in [-90, 90]")
        self._latitude = latitude

    @property
    def longitude(self) -> float:
        """Getter for longitude."""
        return self._longitude

    @longitude.setter
    def longitude(self, longitude: float) -> None:
        """Setter for longitude."""
        if not (Position.MIN_LONGITUDE <= longitude <= Position.MAX_LONGITUDE):
            raise ValueError(f"longitude was {longitude}, but has to be in [-180, 180]")
        self._longitude = longitude


pos1 = Position(49.0127913, 8.4231381, "Parkstraße 17")
pos2 = Position(42.1238762, 9.1649964)


def get_distance(p1: Position, p2: Position) -> float:
    pass