code: def test_mt_gt(mt, probe_locus):
      expr = mt.filter_rows(mt.locus > probe_locus)
      assert expr.n_partitions() == 6
      assert expr.count() == (100, 100)
  
file_path: hail/hail/python/test/hail/extract_intervals/test_key_prefix.py
imports: import hail
label_desc: Use image node_id 5 for calling a global function with example usage: test_mt_gt(mt, probe_locus) without return types