Dan Sommers wrote: > So my question is: Is there a way to pass options "through" a format > string to the __str__ and __repr__ functions? For example, can I > define my own alternate form for use with the '#' formatting > character, so that '%#s' generates output according to SI guidelines?
You can create your own class FmtTemplate like string.Template was done in python 2.4: http://docs.python.org/lib/node105.html and have it call obj.__str__("#s") when you use ${obj:#s} format. I'm not sure why you want to pass format to repr (as far as I understand repr is mostly for debug purposes) but you can call from template as ${obj:r} --> obj.__repr__() ${obj:#r} --> obj.__repr__("#r") fmt = FmtTemplate("quantity1: ${q1:#s}, quantity2: ${q2:#s}") q1=MyQuantity(...) q2=MyQuantity(...) print fmt.substitute(q1=q1,q2=q2) Serge. -- http://mail.python.org/mailman/listinfo/python-list
