text_plain_output_1.png
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')

len(test['sequence'][0])