Run Python tests

Add example of adding revision, show how to construct node path #271

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Run time

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Job	Run time
Run tests (3.8)	38s
Run tests (3.11)	37s
Run tests (3.10)	35s
Run tests (3.12)	29s
Run tests (3.9)	32s
Run tests (3.14)	32s
Run tests (3.13)	33s
	3m 56s