docs: def get_file_hash(self, *algorithms: str):
          '''
          get lower case hash of file.
  
          return value is a tuple, you may need to unpack it.
  
          for example: `get_file_hash('md5', 'sha1')` return `('XXXX1', 'XXXX2')`
          '''
          from .hashs import hashfile_hexdigest
          return hashfile_hexdigest(self._path, algorithms)