image_output_1.png
import pandas as pd

train_df = pd.read_csv('/kaggle/input/riiid-test-answer-prediction/train.csv', low_memory=False, nrows=10 ** 6, dtype={'row_id': 'int64', 'timestamp': 'int64', 'user_id': 'int32', 'content_id': 'int16', 'content_type_id': 'int8', 'task_container_id': 'int16', 'user_answer': 'int8', 'answered_correctly': 'int8', 'prior_question_elapsed_time': 'float32', 'prior_question_had_explanation': 'boolean'})

question = pd.read_csv('../input/riiid-test-answer-prediction/questions.csv')

lecture = pd.read_csv('../input/riiid-test-answer-prediction/lectures.csv')
lecture.head()