Merge pull request #1567 from elicn/fix-blob-coverage #2274

Job	Run time
Python 3.9 on windows-latest	11m 5s
Python 3.11 on ubuntu-latest	3m 52s
Python 3.9 on ubuntu-latest Docker	4m 4s
Python 3.11 on windows-latest	10m 20s
	29m 21s

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