New submission from Mark Shannon:
In Python 2.7.6 and 3.2.3:
>>> "{ {{ 0} }}".format(**{' {{ 0} }': 'X'})
'X'
In Python 3.4.3:
>>> "{ {{ 0} }}".format(**{' {{ 0} }': 'X'})
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ValueError: unexpected '{' in field name
I think the problem is that PEP 3101 is under specified w.r.t. to non
identifier characters in format units.
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components: Interpreter Core
messages: 259473
nosy: Mark Shannon
priority: normal
severity: normal
status: open
title: Inconsistent behaviour of PEP 3101 formatting between versions
type: behavior
versions: Python 3.4
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<http://bugs.python.org/issue26276>
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