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From: Peter Otten <__peter__@web.de>
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Subject: Re: String format - resolve placeholders names
Date: Fri, 20 Nov 2015 16:53:47 +0100
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Xref: csiph.com comp.lang.python:99158

Ervin Hegedüs wrote:

> Python has a good string formatter, eg. I can do this:
> 
> s = "{who} likes {what}"
> d = {'who': "Adam", 'what': "ants"}
> s.format(**d)
> 
> result:
> 'Adam likes ants'
> 
> Is it possible, and if yes, how to resolve the placeholders names
> in string?

>>> import string
>>> for item in string.Formatter().parse("{who} likes {what}"):
...     print(item)
... 
('', 'who', '', None)
(' likes ', 'what', '', None)