application_vnd.jupyter.stderr_output_1.png
import numpy as np # linear algebra

import pandas as pd # data processing, CSV file I/O (e.g. pd.read_csv)

data_dir = '/kaggle/input/stanford-covid-vaccine/'
train = pd.read_json(data_dir + 'train.json', lines=True)
test = pd.read_json(data_dir + 'test.json', lines=True)
sample_df = pd.read_csv(data_dir + 'sample_submission.csv')

test.shape

print(np.tostring(test['sequence'][1]))