Bug in macro cache read when read/write are disabled (#207)

Fixes #206
PolicyEngine · May 8, 2024 · 572507d · 572507d
1 parent 54c6b44
commit 572507d
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diff --git a/changelog_entry.yaml b/changelog_entry.yaml
@@ -0,0 +1,4 @@
+- bump: patch
+  changes:
+    fixed:
+    - Bug in macro cache logic.
diff --git a/policyengine_core/simulations/simulation.py b/policyengine_core/simulations/simulation.py
@@ -534,7 +534,9 @@ def _calculate(
 
         cache_path = self._get_macro_cache(variable_name, str(period))
         if cache_path and cache_path.exists():
-            return self._get_macro_cache_value(cache_path)
+            value = self._get_macro_cache_value(cache_path)
+            if value is not None:
+                return self._get_macro_cache_value(cache_path)
 
         if variable.requires_computation_after is not None:
             if variable.requires_computation_after not in [