Jupyter notebook setup that stays reproducible and reviewable

                  # Jupyter notebook startup cell
%load_ext autoreload
%autoreload 2
%matplotlib inline

import os
import random
import numpy as np
import pandas as pd

SEED = 42
random.seed(SEED)
np.random.seed(SEED)

pd.set_option('display.max_columns', 200)
pd.set_option('display.width', 120)

DATA_ROOT = os.getenv('DATA_ROOT', 'data')
print('using data root:', DATA_ROOT)