Function Transformations Practice

Complete the get_filter_cmd function. It takes two functions as input, filter_one and filter_two, and returns a function, filter_cmd.

filter_cmd itself should take as input two strings: content and option.

1. Set the default value of the option argument to "--one".
2. Complete filter_cmd so that it filters and returns the content according to the input option.
   1. If "--one", use filter_one.
   2. If "--two", use filter_two.
   3. If "--three", use filter_one first, then filter_two.
   4. If any other option is passed, raise an exception:

      invalid option