Mercurial scripting with python

Question

I am trying to get the mercurial revision number/id (it\'s a hash not a number) programmatically in python.

The reason is that I want to add it to the css/js files on

Answer 1

I wanted to do the same thing the OP wanted to do, get hg id -i from a script (get tip revision of the whole REPOSITORY, not of a single FILE in that repo) but I did not want to use popen, and the code from brendan got me started, but wasn't what I wanted.

So I wrote this... Comments/criticism welcome. This gets the tip rev in hex as a string.

from mercurial import ui, hg, revlog
# from mercurial.node import hex  # should I have used this?

def getrepohex(reporoot):
    repo = hg.repository(ui.ui(), reporoot)
    revs = repo.revs('tip')
    if len(revs)==1:
      return str(repo.changectx(revs[0]))
    else:
      raise Exception("Internal failure in getrepohex")