SYMBOL INDEX (3 symbols across 1 files) FILE: lstm_airline_predict.py function load_data (line 9) | def load_data(file_name, sequence_length=10, split=0.8): function build_model (line 32) | def build_model(): function train_model (line 45) | def train_model(train_x, train_y, test_x, test_y):