[issue31415] Add -X option to show import time

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:


New changeset 088929cf62fa22c06f6a44e25915abce9048a545 by Serhiy Storchaka in branch 'master':
bpo-31415: Improve error handling and caching of the importtime option. (#4138)
https://github.com/python/cpython/commit/088929cf62fa22c06f6a44e25915abce9048a545


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