[Zope] Adding HTML to Python

[April Lekin]

In Python I'm building this error message:

l_errorMessage = "These IDs have Errors"
Loop
   l_errorMessage = l_errorMessage + " %s " % (ID)
end loop

return l_errorMessage.

How can I put breaks (returns) between the IDs so each ID will be 
displayed on it's own line?
like:

These IDs have Errors:
1
46
76
45