code: def test_set_by_dotted_path():
      d = {"foo": {"bar": 7}}
      set_by_dotted_path(d, "foo.bar", 10)
      assert d == {"foo": {"bar": 10}}
  
imports: import pytest
  from sacred.utils import PATHCHANGE, convert_to_nested_dict, get_by_dotted_path, is_prefix, iter_prefixes, iterate_flattened, iterate_flattened_separately, join_paths, recursive_update, set_by_dotted_path, get_inheritors, convert_camel_case_to_snake_case, apply_backspaces_and_linefeeds, module_exists, module_is_in_cache, get_package_version, parse_version, rel_path
label_desc: Use image node_id 4 for calling a global function with example usage: test_set_by_dotted_path() without return types