Splitting A String In Python

[Saif133]

Implement a function that, given a feedback
and the size  of the screen, splits the feedback
into lines so that:

• each token (i.e. sequence of non-whitespace characters) belongs to one of the lines entirely;
  
• each line is at most size characters long;
  
• no line has trailing or leading spaces;
  
• each line should have the maximum possible length, assuming that all lines before it were also the longest possible length.
  

I have to complete this function by filling up the ... spaces.

import ...

def feedbackReview(feedback, size):
    return ...

Examples:
For 

feedback = "This is an example feedback"

and 

size = 8

the output should be

feedbackReview(feedback, size) = ["This is", 
                                  "an", 
                                  "example", 
                                  "feedback"]

Thank you.