traffic/core/flight.py
def callsign(self) -> Union[str, Set[str], None]:
        """Returns the unique callsign value(s) associated to the Flight.

        A callsign is an identifier sent by an aircraft during its flight. It
        may be associated with the registration of an aircraft, its mission or
        with a route for a commercial aircraft.
        """
        callsign = self._get_unique("callsign")
        if callsign != callsign:
            raise ValueError("NaN appearing in callsign field")
        return callsign
Returns the unique callsign value(s) associated to the Flight.

        A callsign is an identifier sent by an aircraft during its flight. It
        may be associated with the registration of an aircraft, its mission or
        with a route for a commercial aircraft.
        
Returns the unique callsign value(s) associated to the Flight.
A callsign is an identifier sent by an aircraft during its flight. It
may be associated with the registration of an aircraft, its mission or
with a route for a commercial aircraft.
Returns the unique callsign value ( s ) associated to the Flight . A callsign is an identifier sent by an aircraft during its flight . It may be associated with the registration of an aircraft its mission or with a route for a commercial aircraft .
def callsign(self) -> Union[str, Set[str], None]:
        callsign = self._get_unique("callsign")
        if callsign != callsign:
            raise ValueError("NaN appearing in callsign field")
        return callsign
def callsign ( self ) -> Union [ str , Set [ str ] , None ] : callsign = self . _get_unique ( "callsign" ) if callsign != callsign : raise ValueError ( "NaN appearing in callsign field" ) return callsign
Returns the unique callsign value(s) associated to the Flight.
Returns the unique callsign value ( s ) associated to the Flight .
"""Returns the unique callsign value(s) associated to the Flight.

        A callsign is an identifier sent by an aircraft during its flight. It
        may be associated with the registration of an aircraft, its mission or
        with a route for a commercial aircraft.
        """
self