[issue41084] Signify that a SyntaxError comes from an fstring in the error message

[Lysandros Nikolaou]

Change by Lysandros Nikolaou <lisandrosnik at gmail.com>:


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pull_requests: +20366
stage: resolved -> patch review
pull_request: https://github.com/python/cpython/pull/21212

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue41084>
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