Fix __bool__ for empty optional multidata parameters

galaxyproject · Jun 12, 2018 · 6f213b3 · 6f213b3
1 parent 0a29e53
commit 6f213b3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/galaxy/tools/wrappers.py b/lib/galaxy/tools/wrappers.py
@@ -354,7 +354,7 @@ def __str__(self):
 
     def __bool__(self):
         # Fail `#if $param` checks in cheetah if optional input is not provided
-        return len(self) > 0
+        return any(self)
     __nonzero__ = __bool__