code: def test_option_context_nargs():
      assert (
          dd.options.backends.viz == "seaborn"
      ), "Unexpected default for viz backend"
      with dd.config.update_context("backends.viz", "mylib"):
          assert (
              dd.options.backends.viz == "mylib"
          ), "Config context failed to update"
      assert (
          dd.options.backends.viz == "seaborn"
      ), "Config context exit did not restore options"
  
imports: import pytest
  import data_describe
label_desc: Use image node_id 1 for calling a global function with example usage: test_option_context_nargs() without return types