Support drop for Python < 3.7: step 4 — update code to use Python 3.7 features#505

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leogama wants to merge 1 commit intouqfoundation:masterfrom leogama:cleanup-step-4

Commits on Jun 9, 2022

Support drop for Python < 3.7: step 4 — update code to use Python 3.7 features
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