[issue44590] Create frame objects lazily when needed

[Nick Coghlan]

Change by Nick Coghlan <ncoghlan at gmail.com>:


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nosy: +ncoghlan
nosy_count: 3.0 -> 4.0
pull_requests: +26041
pull_request: https://github.com/python/cpython/pull/27525

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44590>
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