Update Multiple Metadata Tags at Once

Discussion created by MLF on Dec 19, 2011
Hello! I have examined Esri's help topics regarding xslt stylesheets to update metadata, but I'm still not certain I'm barking up the right tree, and suspect python holds the key.  I would like to perform something like the following examples:

1) for all layer files which contain the word "road" in their name, add the following list of words to their tags: road, street
2) for all SDE feature classes which do not currently have an Item Description, add the feature class name and tags into the Item Description

My question is: can python do this?
Thank you!