def activitylist_to_features(self, activitylist, activity_df=Activity.get_empty_dataframe(), starting_id=0):
#activity_df.set_index(["user_id",FeatureExtractor.default_kcs[0], "id"])
for i, act in enumerate(activitylist):
activity_df = activity_df.append(
{Activity.id.name: starting_id + i,
Activity.handedin.name: act.handedin,
Activity.xml_qno.name: act.xml_qno,
Activity.user_id.name: act.user_id,
Activity.chapter_id.name: act.chapter_id,
Activity.section_id.name: act.section_id,
Activity.objective_id.name: act.objective_id,
Activity.exercise_id.name: act.exercise_id,
Activity.got_correct.name: act.got_correct,
Activity.kc.name: act.kc,
}, ignore_index=True)
#activity_df = activity_df.set_index([ "user_id", FeatureExtractor.default_kcs[0], "id"])
df_features = self.df_to_features(activity_df)
return df_features
