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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 find(self, path, all=False):
 """ Looks for files in PIPELINE.STYLESHEETS and PIPELINE.JAVASCRIPT """

        matches = []
        for elem in chain(settings.STYLESHEETS.values(), settings.JAVASCRIPT.values()):
            if normpath(elem['output_filename']) == normpath(path):
                match = safe_join(settings.PIPELINE_ROOT, path)
                if not all:
                    return match
                matches.append(match)
        return matches