[issue36007] python3.8 a1 - docs build requires sphinx 1.7 but uses a 1.8 feature

[Mariatta Wijaya]

Change by Mariatta Wijaya <mariatta at python.org>:


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versions:  -Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue36007>
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