def passcode(callsign):
    """
    Takes a CALLSIGN and returns passcode
    """
    assert isinstance(callsign, str)

    callsign = callsign.split('-')[0].upper()

    code = 0x73e2
    for i, char in enumerate(callsign):
        code ^= ord(char) << (8 if not i % 2 else 0)

    return code & 0x7fff
def passcode(callsign):
    
    assert isinstance(callsign, str)

    callsign = callsign.split('-')[0].upper()

    code = 0x73e2
    for i, char in enumerate(callsign):
        code ^= ord(char) << (8 if not i % 2 else 0)

    return code & 0x7fff
def passcode ( callsign ) : assert isinstance ( callsign , str ) callsign = callsign . split ( '-' ) [ 0 ] . upper ( ) code = 0x73e2 for i , char in enumerate ( callsign ) : code ^= ord ( char ) << ( 8 if not i % 2 else 0 ) return code & 0x7fff
Takes a CALLSIGN and returns passcode
Takes a CALLSIGN and returns passcode