application_vnd.jupyter.stderr_output_2.png text_plain_output_3.png text_plain_output_1.png
from subprocess import check_output

from datetime import date, timedelta
import pandas as pd
import numpy as np
from sklearn.metrics import mean_squared_error
import lightgbm as lgb
from subprocess import check_output
print(check_output(['ls', '../input']).decode('utf8'))