docs: def verify(path):
          """Verify that `path` has a supported numpy file format"""
          path = pathlib.Path(path)
          valid = False
          if path.suffix == ".npy":
              try:
                  nf = np.load(str(path), mmap_mode="r", allow_pickle=False)
              except (OSError, ValueError, IsADirectoryError):
                  pass
              else:
                  if len(nf.shape) == 2:
                      valid = True
          return valid