Raymond Hettinger <raymond.hettin...@gmail.com> added the comment:
This looks like a reasonable use case. That being said, I question whether the
defaults should be attached directly to the template instance or whether they
should be part of the substitution method.
FWIW, there already have a couple of other ways to do it:
>>> from string import Template
>>> s = Template("${user} made me a ${flavor} cake.")
>>> default = {"user":"Dennis"}
>>> s.substitute(default, flavor='vanilla')
'Dennis made me a vanilla cake.'
>>> s.substitute(default, user='Ken', flavor='vanilla')
'Ken made me a vanilla cake.'
>>> from collections import ChainMap
>>> s.substitute(ChainMap(dict(flavor='vanilla'), default))
'Dennis made me a vanilla cake.'
----------
assignee: -> rhettinger
nosy: +rhettinger
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue13173>
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