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Python Programming Exercises

Using Sets

Sets are another important data structure, found in many programming languages and libraries. Here we use a Set to remove duplicates in a list of Strings.

In a file named using_sets.py, write a function named dedup that:

  • Takes a variable number of arguments
  • Ignores arguments which are not Strings
  • Returns a List of the remaining arguments, with no duplicate values, sorted by value

Calling dedup('one',2,'three',True,'three') returns ['one','three'], for example

Hints

  • Using a Set as an intermediate data structure is a good way of removing duplicate values.
  • You will probably need to use the sorted() and isinstance() functions.

Test code

To validate your code, download the test code below and run it as explained on the Hello, Python exercise page.

Test code: using_sets_test.py