import glob
import os
import pandas
import pickle

def kernel_1():
    t4 = 'kernel_1-t3.dat'

    def preprocess(t4):
        t1 = '/kaggle/input/mlb-player-digital-engagement-forecasting'
        t2 = glob.glob(
            os.path.join(
                t1,
                '*.csv'
            )
        )

        t3 = {
            o : pandas.read_csv(o)
            for o in t2
        }

        with io.open(t4, 'wb') as f:
            pickle.dump(t3, f)

    if not os.path.exists(t4):
        preprocess(t4=t4)

    with io.open(t4, 'rb') as f:
        t3 = pickle.load(f)

    return dict(
        t3=t3,
    )