Find out lines of code and lines of comments.

        Args:
            path_and_filename (str): path and filename to parse  for loc and com.
            pattern (str): regex to search for line commens and block comments

        Returns:
            int, int: loc and com for given file.

def analyse(self, path_and_filename, pattern):
        """
        Find out lines of code and lines of comments.

        Args:
            path_and_filename (str): path and filename to parse  for loc and com.
            pattern (str): regex to search for line commens and block comments

        Returns:
            int, int: loc and com for given file.
        """
        with open(path_and_filename) as handle:
            content = handle.read()
            loc = content.count('\n') + 1
            com = 0
            for match in re.findall(pattern, content, re.DOTALL):
                com += match.count('\n') + 1

            return max(0, loc - com), com