I want to partially format a string in python with some named arguments, but leave any unused or unmatched format specifiers unchanged. For example:
"{} {} {arg1}".format(arg1="hi")
prints:
"{} {} hi"
rather than throwing an IndexError. Or:
"%d %d %(arg1)s" % {'arg1': "hi"}
prints
"%d %d hi"
rather than throwing a TypeError.
Is there some partially hidden corner of the format module that does this (or a option to pass into format())?
I don't have the luxury of creating the format strings myself, they are provided, but I can specify certain fields to be replaced before it is passed upstream. For example, I can specify that if there is one or more %(arg1)s in the string, I will replace it with "hi" before I pass it upstream.
