Catch KeyError if constraint name is missing

DiamondLightSource · Apr 26, 2023 · fa4398a · fa4398a
1 parent e039a38
commit fa4398a
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/diffcalc/hkl/you/constraints.py b/diffcalc/hkl/you/constraints.py
@@ -423,6 +423,9 @@ def set_constraint(self, name, value):  # @ReservedAssignment
         return "%s : %s --> %s" % (name, old_str, new_str)
 
     def get_constraint(self, name):
-        value = self.all[name]
+        try:
+            value = self.all[name]
+        except KeyError:
+            return None
         return None if value is None else value * TODEG
-
+