code: def test_same_key():
      assert RandomState(0).rand(10).key == RandomState(0).rand(10).key
  
file_path: mars/mars/tensor/random/tests/test_random.py
imports: import numpy
  import pytest
  from ....core import tile
  from ....serialization import serialize, deserialize
  from ....serialization.serializables import Serializable
  from ...datasource import tensor
  from ..None import beta, rand, choice, multivariate_normal, randint, randn, permutation, TensorPermutation, shuffle, RandomState
  from ..core import RandomStateField
label_desc: Use image node_id 3 for calling a global function with example usage: test_same_key() without return types