Fix mutable default values in ImpactFreqCurve

CLIMADA-project · Aug 17, 2023 · 36f2ed4 · 36f2ed4
1 parent e1e52a2
commit 36f2ed4
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/climada/engine/impact.py b/climada/engine/impact.py
@@ -1854,10 +1854,10 @@ class ImpactFreqCurve():
     """dictionary of tags of exposures, impact functions set and
         hazard: {'exp': Tag(), 'impf_set': Tag(), 'haz': Tag()}"""
 
-    return_per : np.array = np.array([])
+    return_per : np.ndarray = field(default_factory=lambda: np.empty(0))
     """return period"""
 
-    impact : np.array = np.array([])
+    impact : np.ndarray = field(default_factory=lambda: np.empty(0))
     """impact exceeding frequency"""
 
     unit : str = ''