[Python-Dev] PEP 215 redux: toward a simplified consensus?

Fredrik Lundh fredrik@pythonware.com
Mon, 25 Feb 2002 22:59:14 +0100

barry wrote:
> From a /non-programmer's/ point of view, %(var)s is way too error
> prone, and $-strings are an attempt at implementing a simple to
> explain, hard to get wrong, rule for thru-the-web supplied template
> strings.

how about making that "s" optional?

    1. %% substitutes to just a single %

    2. %(identifier) followed by non-identifier characters gets
    interpolated with the value of the 'identifier' key in the sub-
    stitution dictionary.

    3. For handling cases where the identifier is followed by
    identifier characters that aren't part of the key, $(identfier)s
    is equivalent to %(identifier)