Hello everyone, just thought I'd report a small bug in this exercise.
I received the error "It looks like your message is "I am the secret message!" instead of "I am another secret message!"
Problem being, as can be seen in the screenshot below, my message DID read "I am another secret message!"
See the screenshot: http://www.screencast.com/t/hWpbquCx9
I am certain my actual error was in not assigning the lambda expression to its own variable.
After I did so and printed the variable, I passed the exercise.
garbled = "IXXX aXXmX aXXXnXoXXXXXtXhXeXXXXrX sXXXXeXcXXXrXeXt mXXeXsXXXsXaXXXXXXgXeX!XX" print filter(lambda x: x != "X", garbled)