code: def _find_file(f):
          
          if os.path.isabs(f):
              return f
          else:
              for d in Config._dirs:
                  _f = os.path.join(d, f)
                  if os.path.isfile(_f):
                      return _f
              raise FiggypyError(
                  "could not find configuration file {} in dirs {}"
                  .format(f, Config._dirs)
              )
docs: Find a config file if possible.