[issue36787] Python3 regresison: String formatting of None object

[Zachary Ware]

Zachary Ware <zachary.ware at gmail.com> added the comment:

You can use `!s` to be sure that the object is a string:

>>> '{!s:^10}'.format(None)
'   None   '

I think it's unlikely the behavior of NoneType.__format__ will be changed, but I'm adding Eric Smith to make that determination as the maintainer of str.format.

See issue7994 for the background on the change that produced this behavior.

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nosy: +eric.smith, zach.ware
versions: +Python 3.8

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