fix: Python APIとexample/python/run.pyの型付けを直す #3067

Job	Run time
rust-unit-test	5m 11s
actionlint	14s
rust-lint	3m 31s
shellcheck	14s
validate-cargo-lock	24s
build-and-test-java-api (windows-latest)	9m 18s
build-and-test-java-api (macos-latest)	3m 29s
build-and-test-java-api (ubuntu-latest)	2m 47s
build-and-test-python-api (windows-latest)	7m 16s
build-and-test-python-api (macos-latest)	3m 5s
build-and-test-python-api (ubuntu-latest)	3m 11s
build-unix-cpp-example (macos-latest, osx-x64-cpu-cpp-shared)	2m 33s
build-unix-cpp-example (ubuntu-latest, linux-x64-cpu-cpp-shared)	1m 34s
build-windows-cpp-example	4m 32s
c-header	43s
rust-integration-test-strategy-matrix	2s
rust-integration-test (macos-12)	2m 8s
rust-integration-test (ubuntu-20.04)	1m 32s
	51m 44s

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