code: def test_precise_latlong(self):
      block_val = predicates.latLongGridPredicate(self.latlong1)
      assert block_val == {"(42.5, -5.0)"}
      block_val = predicates.latLongGridPredicate((0, 0))
      assert block_val == set()
  
imports: import unittest
  from dedupe import predicates
label_desc: Use image node_id 2 for calling the TestLatLongGrid obj's underlying member method code with example usage: obj.test_precise_latlong() without return types