code: def _find_schema(data_path, schema_name):
      
  
      path = glob.glob(schema_name)
      for p in path:
          if os.path.isfile(p):
              return p
  
      return _find_data_path_schema(data_path, schema_name)
docs: Checks if `schema_name` is a valid file, if not
      searches in `data_path` for it.