Add ability for TQDMProgressBar to retain prior epoch training bars (… #19578
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What does this PR do?
Adds the ability to retain tqdm progress bars from prior training epochs.
Fixes #19322
Before submitting
A: No, an issue was was opened but there is no PR yet to discuss (catch 22).
A: Yes.
A: No. The goal was to not break any existing behavior so the existing TQDMProgressBar test suite was used to ensure that objective.
A: Partly, I only ran the TQDMProgressBar test suite, since the other's mostly failed on my machine even before the change was made. As such am submitting a draft PR to ensure the entire test suite passes using the project's CI system before it's worth discussing the PR.
A: N/A, No breaking changes intended.
A: Yes
PR review
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Reviewer checklist
📚 Documentation preview 📚: https://pytorch-lightning--19578.org.readthedocs.build/en/19578/