Need help with this in python: name two classes, Airport and its specialized subclass GeoAirport, for the organization of airport information. Airport instances will encompass fundamental data such as IATA codes, names, and locations. On the other hand, GeoAirport instances will provide additional features by incorporating geographic coordinates and a compilation of nearby airports within a $150$km range. The GeoAirport class will include a method named nearby$\_$airports$()$ to generate a well$-$formatted string displaying the nearby airports.

The program will process input in six different formats utilizing command$-$line arguments captured in sys$.$argv:

$*$ Execute the script with an IATA code as an argument.

$*$ Execute the script with latitude and longitude in MS format.

$*$ Execute the script with latitude and longitude in MS format, and specify the number of nearest airports.

$*$ Execute the script with latitude and longitude in decimal format.

$*$ Execute the script with latitude and longitude in decimal format, and specify the number of nearest airports.

$*$ Execute the script with a substring of the airport name.

The script will retrieve airport data from files named "airports" and "airport$-$coordinates". In cases where no matching format is identified, it will resort to substring matching within airport names.