Michal Ludvig wrote:
URL="http://xyz/blah?session=%(session)s&message=%(message)s"is it possible to fill in only 'session' and leave "%(message)s" as is when it isn't present in the values dict? For example: URL % { 'session' : 123 } raises KeyError because of missing 'message' in the dict. I could indeed replace '%(session)s' with a string replace or regexp but that's not very elegant ;-)
You can use a defaultdict instead of a regular dict: from collections import defaultdict d = defaultdict(str) d['session'] = 123 URL="http://xyz/blah?session=%(session)s&message=%(message)s" print URL % d -tkc -- http://mail.python.org/mailman/listinfo/python-list
