text_html_output_1.png
import pandas as pd # data processing, CSV file I/O (e.g. pd.read_csv)

root_path = '/kaggle/input/CORD-19-research-challenge/'
metadata_path = root_path + 'metadata.csv'
metadata_df = pd.read_csv(metadata_path, dtype={'pubmed_id': str, 'Microsoft Academic Paper ID': str, 'doi': str})
metadata_df = metadata_df.fillna(0)

metadata_df_wt_abs = metadata_df[metadata_df['abstract'] != 0]
metadata_df_wt_abs.shape