Reading meta data from DOI.org

In this notebook we will access meta data of records on https://doi.org .

import requests
import json

For this, we write a little helper function.

def read_doi(doi):
    """
    Reads meta data of records in doi.org.
    """

    doi = doi.replace("https://doi.org/", "")
    url = "https://doi.org/api/handles/" + doi
    
    # Download the file
    response = requests.get(url)
    data = response.json()
    return data

We can then call the function and store the results in a data object.

data = read_doi("https://doi.org/10.5281/zenodo.3833824")
data

{'responseCode': 1,
 'handle': '10.5281/zenodo.3833824',
 'values': [{'index': 100,
   'type': 'HS_ADMIN',
   'data': {'format': 'admin',
    'value': {'handle': '10.admin/codata',
     'index': 300,
     'permissions': '111111111111'}},
   'ttl': 86400,
   'timestamp': '2020-05-19T10:28:11Z'},
  {'index': 1,
   'type': 'URL',
   'data': {'format': 'string', 'value': 'https://zenodo.org/record/3833824'},
   'ttl': 86400,
   'timestamp': '2020-05-19T10:28:11Z'}]}

This json object consists of Python dictionaries and lists. We can navigate through those and extract information.

data['values'][0]

{'index': 100,
 'type': 'HS_ADMIN',
 'data': {'format': 'admin',
  'value': {'handle': '10.admin/codata',
   'index': 300,
   'permissions': '111111111111'}},
 'ttl': 86400,
 'timestamp': '2020-05-19T10:28:11Z'}

Exercise

Find out the author(s) of the DOI above.