[property.py] Print Validation Errors

Author: fschrader1992

odml/property.py

@@ -129,7 +129,9 @@ def __init__(self, name=None, values=None, parent=None, unit=None,
 
         self.parent = parent
 
-        validation.Validation(self)
+        for err in validation.Validation(self).errors:
+            if err.rank == "error":
+                print("ERROR", err.obj, err.msg)
 
     def __len__(self):
         return len(self._values)