add init function #185

Job	Run time
Tests (3.9, pypi, postgresql14, opensearch2)	2m 0s
Tests (3.9, pypi, postgresql14, opensearch2)	2m 6s
Tests (3.9, pypi, mysql8, opensearch2)	2m 7s
Tests (3.9, pypi, mysql8, opensearch2)	2m 15s
Tests (3.10, pypi, postgresql14, opensearch2)	2m 8s
Tests (3.10, pypi, postgresql14, opensearch2)	1m 59s
Tests (3.10, pypi, mysql8, opensearch2)	2m 6s
Tests (3.10, pypi, mysql8, opensearch2)	2m 9s
Tests (3.11, pypi, postgresql14, opensearch2)	2m 8s
Tests (3.11, pypi, postgresql14, opensearch2)	1m 55s
Tests (3.11, pypi, mysql8, opensearch2)	2m 18s
Tests (3.11, pypi, mysql8, opensearch2)	2m 6s
Tests (3.12, pypi, postgresql14, opensearch2)	2m 27s
Tests (3.12, pypi, postgresql14, opensearch2)	2m 26s
Tests (3.12, pypi, mysql8, opensearch2)	2m 29s
Tests (3.12, pypi, mysql8, opensearch2)	2m 39s
	35m 18s

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