code: def test_normal(self):
      np = LazyImport("np", globals(), "numpy")
      self.assertEqual(np.zeros(1, dtype=int)[0], 0)
  
imports: import unittest
  from towhee.utils.lazy_import import LazyImport
label_desc: Use image node_id 1 for calling the TestLazyImport obj's underlying member method code with example usage: obj.test_normal() without return types