Merge pull request #1820 from glotzerlab/improve-data-access-error

Improve the data access error message.
glotzerlab · Jun 18, 2024 · 54dba07 · 54dba07
2 parents 0fa77d3 + 439e27c
commit 54dba07
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/hoomd/error.py b/hoomd/error.py
@@ -28,8 +28,9 @@ def __init__(self, data_name):
 
     def __str__(self):
         """Returns the error message."""
-        return (f'The property {self.data_name} is unavailable until the '
-                'simulation runs for 0 or more steps.')
+        return (f'The property {self.data_name} is not available until the '
+                'operation is added to a simulation AND `simulation.run` '
+                'has been called.')
 
 
 class TypeConversionError(ValueError):