See the thread from earlier today, this list (python-list@python.org). "newbie: dictionary - howto get key value"
On Thursday 10 March 2005 06:26 pm, Sandman wrote: > Hi there, > I'm still a bit new to Python, and had a question. > I have a dictionary that looks like: > PWD = \ > { > "root": 0, > "joe": 200, > "susan": 201, > .. > } > > In other words, the values are unique as well as the keys. I've run > into a situation where I need to lookup the item by value. So given > 201, I need to say the key is really susan. > > Is there a way to do this that does not traverse the entire dictionary > multiple times? > > Thanks. -- James Stroud, Ph.D. UCLA-DOE Institute for Genomics and Proteomics Box 951570 Los Angeles, CA 90095 -- http://mail.python.org/mailman/listinfo/python-list