[issue39524] Escape sequences in doc string of ast._pad_whitespace

[mpheath]

Change by mpheath <mpheath at tpg.com.au>:


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keywords: +patch
pull_requests: +17712
stage: needs patch -> patch review
pull_request: https://github.com/python/cpython/pull/18340

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<https://bugs.python.org/issue39524>
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