code: def _normalize_file_path(file_path):
          
          if not file_path:
              return None
          elif file_path.startswith('s3://') or \
                  file_path.startswith('http://') or \
                  file_path.startswith('https://'):
              return file_path
          return path.abspath(file_path)
docs: Normalize the file path value.
  
          :param str file_path: The file path as passed in
          :rtype: str