import json

f = open("C:/Users/mkont/OneDrive/Υπολογιστής/final_preds_200(2)+200(3).json") a = json.load(f) dictnew = {} for value in a: dictnew["document_id"] = value["text"][30:38] dictnew.update(value) with open("C:/Users/mkont/OneDrive/Υπολογιστής/new_final_preds_.json","w") as fp: json.dump(dictnew,fp)