💡 모듈 불러오기import pandas as pdimport numpy as npfrom sklearn.preprocessing import StandardScalerfrom sklearn.model_selection import TimeSeriesSplitfrom sklearn.metrics import mean_squared_error, mean_absolute_error, r2_scoreimport matplotlib.pyplot as pltfrom keras.models import Sequentialfrom keras.layers import LSTM, Dense, Dropoutfrom keras.callbacks import EarlyStopping    💡 데이터 불러오기# 데이터 불러..