[issue30166] Import command-line parsing modules only when needed

[Terry J. Reedy]

Terry J. Reedy added the comment:


New changeset c0ef607c52e58e94693fbedb27f2813bc3fed8fa by terryjreedy in branch '3.6':
[3.6] bpo-30166: backport pyshell changes (GH 1293) (#2098)
https://github.com/python/cpython/commit/c0ef607c52e58e94693fbedb27f2813bc3fed8fa


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