[issue30978] str.format_map() silences exceptions in __getitem__

[STINNER Victor]

STINNER Victor added the comment:

While KeyboardInterrupt and ZeroDivisionError are easy to understand, IndexError converted to KeyError doesn't look like a major bug. So I'm not sure about fixing Python 3.5 and 3.6. Maybe it's ok because this function is rarely used and exceptions are not "expected": I hardly imagine a code explicitly catching KeyError to do something on format_map() error.

In short, my vote for backport is +0 :-)

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30978>
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