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Diffstat (limited to 'grc/python/FlowGraph.py')
| -rw-r--r-- | grc/python/FlowGraph.py | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/grc/python/FlowGraph.py b/grc/python/FlowGraph.py index 6b2936c75..4dd18a81f 100644 --- a/grc/python/FlowGraph.py +++ b/grc/python/FlowGraph.py @@ -42,6 +42,7 @@ class FlowGraph(_FlowGraph, _GUIFlowGraph): @param namespace_hash a unique hash for the namespace @return the resultant object """ + if not code: raise Exception, 'Cannot evaluate empty statement.' my_hash = hash(code) ^ namespace_hash #cache if does not exist if not self._eval_cache.has_key(my_hash): |