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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def edit_content(self, original_lines, file_name):
 """Processes a file contents. First processes the contents line by line applying the registered expressions, then process the resulting contents using the registered functions. Arguments: original_lines (list of str):
 file content. file_name (str):
 name of the file. """

        lines = [self.edit_line(line) for line in original_lines]
        for function in self._functions:
            try:
                lines = list(function(lines, file_name))
            except UnicodeDecodeError as err:
                log.error('failed to process %s: %s', file_name, err)
                return lines
            except Exception as err:
                log.error("failed to process %s with code %s: %s",
                          file_name, function, err)
                raise  # Let the exception be handled at a higher level.
        return lines