fix: periodic polling sample #650

Job	Run time
build-lint-test (3.9, ubuntu-latest)	5m 8s
build-lint-test (3.9, macos-intel)	5m 52s
build-lint-test (3.9, macos-arm)	5m 37s
build-lint-test (3.9, windows-latest)	5m 45s
build-lint-test (3.12, ubuntu-latest)	5m 20s
build-lint-test (3.12, macos-intel)	5m 55s
build-lint-test (3.12, macos-arm)	5m 23s
build-lint-test (3.12, windows-latest)	6m 3s
	45m 3s

Provide feedback