Github user tliron commented on a diff in the pull request:
https://github.com/apache/incubator-ariatosca/pull/138#discussion_r119446194
--- Diff: extensions/aria_extension_tosca/simple_v1_0/modeling/functions.py
---
@@ -69,7 +69,7 @@ def __evaluate__(self, container_holder):
e, final = evaluate(e, final, container_holder)
if e is not None:
value.write(unicode(e))
- value = value.getvalue()
+ value = value.getvalue() or u''
--- End diff --
We default to Unicode everywhere possible in values -- this avoids thorny
problems later down the road with values.
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