Doing the review in Advanced Topic in Python was easy as well as a bit difficult. I had gotten the hang on doing list slicing but comprehensions I had a little hard time in. When I was up to the lambda expressions I had everything down in the message variable ” message = filter(lambda x: x ____ “X” , garbled)” but to remove the “X” was the part I was stuck in. I went back to look at the review and after a few tries I realized to remove it i had to add “!=” to remove the “X”. The message variable had to be… ” message = filter(lambda x: x != “X” , garbled) ” By going back at past lessons within the advanced topic in python I was able to understand what I needed to do in order to solve the review.