Comment by masklinn

Not only is the intent of those snippets rather different, you've rather misunderstood the original to the extent that it's broken.

The bash version looks for the pattern `search` in every line of `test.txt`, the Python version treats `test.txt` as a file of patterns, and look for each of these patterns in the file `search`.

And of course you wouldn't implement the bash version in python that way as it's rather trivial to do it in Python:

    out = [line for line in open('test.txt') if 'search' in line]

or somesuch.