recommendation engine - IndexError: index 77572 is out of bounds for axis 0 with size 671 -


i trying complete movie recommendation system , having trouble following few lines of code:

train_data_matrix = np.zeros((n_users, n_movies)) line in train_data.itertuples():     train_data_matrix[line[0], line[1]] = line[2]    test_data_matrix = np.zeros((n_users, n_movies)) line in test_data.itertuples():     test_data_matrix[line[0], line[1]] = line[2]

any appreciated. please find error message receiving below:

indexerror                     traceback (most recent call last) <ipython-input-52-d28ea8571763> in <module>()       2 train_data_matrix = np.zeros((n_users, n_movies))       3 line in train_data.itertuples(): ----> 4    train_data_matrix[line[0], line[1]] = li ne[2]       5        6 test_data_matrix = np.zeros((n_users, n_movies))  indexerror: index 77572 out of bounds axis 0 size 671


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