howto handle nested for

[Neal Becker]

I know this should be a fairly basic question, but I'm drawing a blank.

I have code that looks like:
 
  for s0 in xrange (n_syms):
        for s1 in xrange (n_syms):
            for s2 in xrange (n_syms):
                for s3 in xrange (n_syms):
                    for s4 in range (n_syms):
                        for s5 in range (n_syms):

Now I need the level of nesting to vary dynamically.  (e.g., maybe I need to add 
for  s6 in range (n_syms))

Smells like a candidate for recursion.  Also sounds like a use for yield.  Any 
suggestions?