authors.py

import json
import csv
with open("authors.json") as authors_json, open("authors.csv", "w+") as authors_csv:
    authordata = json.load(authors_json)
    authorwriter = csv.writer(authors_csv, delimiter=',',
                            quotechar='"', quoting=csv.QUOTE_ALL)
    
    for authoruri, value in authordata.items():
        row=[]
        row.append(authoruri[26:-5]) # id from uri
        row.append(authoruri[:-5]) # uri without json format specifyer
        names=[]
        for item in value['http://www.w3.org/2000/01/rdf-schema#label'] :
            names.append(item['value']) # all labels for author
        row.append("|".join(names))
        authorwriter.writerow(row)