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  3. Python Data Science Toolbox (Part 1)

Exercise

Filter() and lambda functions

In the previous exercise, you used lambda functions to anonymously embed an operation within map(). You will practice this again in this exercise by using a lambda function with filter(), which may be new to you! The function filter() offers a way to filter out elements from a list that don't satisfy certain criteria.

Your goal in this exercise is to use filter() to create, from an input list of strings, a new list that contains only strings that have more than 6 characters.

Instructions

100 XP
  • In the filter() call, pass a lambda function and the list of strings, fellowship. The lambda function should check if the number of characters in a string member is greater than 6; use the len() function to do this. Assign the resulting filter object to result.
  • Convert result to a list and print out the list.