make contextmanager from FileUtils.

[sleep-walker]

@mimi1vx could you describe what you desire?

[mimi1vx]

@sleep-walker

instead this:

def load_keywords_whitelist():
    keywords = []

    files = FileUtils()
    files.open_datafile(BRACKETING_EXCLUDES)
    for line in files.f:
        keywords.append(line.rstrip('\n'))
    files.close()

    return keywords

--> instance file utils class --> call method of this class --> explicitly read file mapped to class attribute --> explicitly close file --> GC to remove instance ..

consider this code:

def load_keywords_whitelist():
    with open_datafile(BRACKETING_EXCLUDES) ad file:
         return [ line.rstrip("\n") for line in file]

And because open is context manager ...., we need only wrap it in simple function which catches exceptions interesting for us.