Enumerating formatting strings

[Andrew Dalke]

Michael Spencer wrote:
> I have wrapped up my current understanding in the following class:

I see you assume that only \w+ can fit inside of a %()
in a format string.  The actual Python code allows anything
up to the balanced closed parens.

>>> class Show:
...   def __getitem__(self, text):
...     print "Want", repr(text)
... 
>>> "%(this(is)a.--test!)s" % Show()
Want 'this(is)a.--test!'
'None'
>>> 

I found this useful for a templating library I once wrote
that allowed operations through a simple pipeline, like

   %(doc.text|reformat(68)|indent(4))s

				Andrew
				dalke at dalkescientific.com