--- a/hgext3rd/evolve/evolvecmd.py	Thu Jul 11 14:16:48 2019 -0700
+++ b/hgext3rd/evolve/evolvecmd.py	Thu Jul 11 14:21:23 2019 -0700
@@ -204,7 +204,7 @@
         msg = _('skipping %s : we do not handle merge yet\n') % bumped
         ui.write_err(msg)
         return (False, ".")
-    prec = repo.set('last(allpredecessors(%d) and public())', bumped.rev()).next()
+    prec = next(repo.set('last(allpredecessors(%d) and public())', bumped.rev()))
     # For now we deny target merge
     if len(prec.parents()) > 1:
         msg = _('skipping: %s: public version is a merge, '

--- a/hgext3rd/evolve/obshistory.py	Thu Jul 11 14:16:48 2019 -0700
+++ b/hgext3rd/evolve/obshistory.py	Thu Jul 11 14:21:23 2019 -0700
@@ -793,7 +793,7 @@
 def _getdifflines(iterdiff):
     """return a cleaned up lines"""
     try:
-        lines = iterdiff.next()
+        lines = next(iterdiff)
     except StopIteration:
         return None
     return _prepare_hunk(lines)

--- a/hgext3rd/evolve/stablerange.py	Thu Jul 11 14:16:48 2019 -0700
+++ b/hgext3rd/evolve/stablerange.py	Thu Jul 11 14:21:23 2019 -0700
@@ -764,7 +764,7 @@
         if value is None:
             revs = self.revsfromrange(repo, (merge, 0))
             i = reversed(revs)
-            i.next() # pop the merge
+            next(i) # pop the merge
             expected = len(revs) - 1
             # Since we do warmup properly, we can expect the cache to be hot
             # for everythin under the merge we investigate

--- a/hgext3rd/evolve/templatekw.py	Thu Jul 11 14:16:48 2019 -0700
+++ b/hgext3rd/evolve/templatekw.py	Thu Jul 11 14:21:23 2019 -0700
@@ -264,7 +264,7 @@
         # Empty the generator
         try:
             while True:
-                chunkstr.append(chunk.next())
+                chunkstr.append(next(chunk))
         except StopIteration:
             pass