list() on the result of map() to maintain py3 compat

Author: radix

effect/testing.py

@@ -161,7 +161,7 @@ def performer(intent):
                 "Effects: %s\n"
                 "parallel_seqs: %s" % (len(intent.effects), len(parallel_seqs),
                                        intent.effects, parallel_seqs))
-        return map(perf, parallel_seqs, intent.effects)
+        return list(map(perf, parallel_seqs, intent.effects))
     return (ParallelEffects(effects=_ANY), performer)