Utils lazy import #817

Job	Run time
Test Linting	12s
Test Docs	28s
Build wheels on ubuntu-latest	1m 15s
Build wheels on windows-latest	4m 0s
Build sdist	32s
Build wheels on macos-latest	2m 42s
Test Linux py37	1m 13s
Test Linux py38	57s
Test Linux py39	1m 1s
Test Codegen	58s
Test Examples	1m 4s
Test Linux py310	58s
Test Linux py311	56s
Test Imports	19s
Test PyInstaller	1m 55s
Publish to Github and Pypi	0s
	18m 30s

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