Rename an academic article pdf with human readable format

rename_pdf.py

import sys
import requests
import PyPDF2
import requests
import os

crossref = 'http://api.crossref.org/'

def rename(pdf):
    """Rename an academic article pdf file with human readable format
    
    Arguments:
        pdf {String} -- pdf file name
    """

    pdfReader = PyPDF2.PdfFileReader(open(pdf, 'rb'))
    
    for k, v in pdfReader.documentInfo.items():
        if 'doi' in k:
            doi = v
            break
    
    url = '{}works/{}'.format(crossref, doi)
    r = requests.get(url)
    
    item = r.json()

    # no error handlings and will not work for very new articles

    abbreviated_journal = item['message']['short-container-title'][0]
    year = item['message']['created']['date-parts'][0][0]
    volume = item['message']['volume']
    page = item['message']['page']

    # format: abbreviated_journal year, volume, page.pdf
    name = '{} {}, {}, {}'.format(abbreviated_journal, year, volume, page)

    os.rename(pdf, name+'.pdf')

if __name__ == '__main__':
    rename(sys.argv[1])