fixed removal of imports that appears after a comment in the imports

[DamnWidget]

When there are imports after a comment in the imports block, they get removed so for example:

import re
# some random comment
import sys

def main():
    print(sys.path)
    print(os.uname())

Get translated to

import os

def main():
    print(sys.path)
    print(os.uname())

This commit fixes this behavior but the comment is still gone

[birkenfeld]

Looks good, thanks!