There are people who write Python code like that, but it's an extreme minority. Here's the more likely way:

    array = [1, 0, 2, 3]
    new_array = [x * 2 for x in array
                 if x != 0]

Just as a matter of style, few Python programmers will use lambda outside something like this:

    array = [...]
    arry.sort(key=lambda ...)