From e0a321dd86f2a2eab21e5bbd3679d10e297d2997 Mon Sep 17 00:00:00 2001
From: Nicolas Mounet <nicolas.mounet@cern.ch>
Date: Tue, 3 Oct 2023 12:35:38 +0200
Subject: [PATCH] fixing mypy issue

---
 caimira/models.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/caimira/models.py b/caimira/models.py
index 7a14f33f..24ef62e2 100644
--- a/caimira/models.py
+++ b/caimira/models.py
@@ -1061,7 +1061,7 @@ class _ConcentrationModelBase:
             invRR[RR == 0.] = np.nan
             invRR[RR != 0.] = 1. / RR[RR != 0.]
         else:
-            invRR = np.nan if RR == 0. else 1. / RR
+            invRR = np.nan if RR == 0. else 1. / RR # type: ignore
 
         return (self.population.people_present(time) * invRR / V +
                 self.min_background_concentration()/self.normalization_factor())