code: def test_evaluator_op():
      assert _calc("1 + 2, 1 - 2, 1 * 2, 1 / 2") == (3, -1, 2, 0.5)
  
file_path: tvm/tests/python/tvmscript/test_tvmscript_parser_evaluator.py
imports: import pytest
  import tvm.testing
  from tvm.script.parser.core.diagnostics import Source
  from tvm.script.parser.core.evaluator import ExprEvaluator
label_desc: Use image node_id 3 for calling a global function with example usage: test_evaluator_op() without return types