Update Mimic4Dataset.py

Mimic4Dataset.py

@@ -551,17 +551,18 @@ class Mimic4Dataset(datasets.GeneratorBasedBuilder):
             #chart
             if self.feat_chart:  
                 chart = data['Chart']
-                charts=chart['val']
-                feat=charts.keys()
-                chart_val=[charts[key] for key in feat]
-                chart_mean = [round(np.mean(c),3) for c in chart_val]
-                feat_text = [(items[items['itemid']==f]['label']).to_string(index=False) for f in feat]
-                template='{} for {}'
-                chart_text = []
-                for mean_val, feat_label in zip(chart_mean, feat_text):
-                    text = template.format(mean_val,feat_label)
-                    chart_text.append(text)
-                chart_text='The chart events mesured are : ' + '; '.join(chart_text)
+                if chart:
+                    charts=chart['val']
+                    feat=charts.keys()
+                    chart_val=[charts[key] for key in feat]
+                    chart_mean = [round(np.mean(c),3) for c in chart_val]
+                    feat_text = [(items[items['itemid']==f]['label']).to_string(index=False) for f in feat]
+                    template='{} for {}'
+                    chart_text = []
+                    for mean_val, feat_label in zip(chart_mean, feat_text):
+                        text = template.format(mean_val,feat_label)
+                        chart_text.append(text)
+                    chart_text='The chart events mesured are : ' + '; '.join(chart_text)
             else:
                 chart_text=''