code: def _check_dim_1axis(a):
      return mt.asarray(a).shape[0]
  
file_path: mars/mars/learn/preprocessing/tests/test_data.py
imports: import pytest
  from sklearn.datasets import load_iris
  from sklearn.utils import gen_batches
  from sklearn.utils._testing import assert_array_almost_equal, assert_allclose
  from ....None import tensor
  from ..None import MinMaxScaler, minmax_scale
label_desc: Use image node_id 2 for calling a global function with example usage: _check_dim_1axis(a) and returns: mt