add-example-notebook

src/covid-19/covid_19_utils/covid_19_utils/converters/__init__.py

@@ -103,6 +103,8 @@ class CaseConverterImpl:
         except TypeError:
             pass
 
+        # make sure that date is datetime
+        df["date"] = pd.to_datetime(df["date"])
         return df[self.common_columns]
 
     # def _compute_daily_counts(self, df):