Update commands from python 3.6 to python 3.7#8225

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busunkim96 merged 1 commit into

googleapis:masterfrom

brendanlundy:contributing

Jun 5, 2019

Commits on Jun 5, 2019

Update commands from python 3.6 to python 3.7 since system tests can only be run in python 3.7. Still possible to run unit tests in 3.6, but updating that command to 3.7 as well to be consistent.
brendanlundy
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