Hi I am trying to get the cancer ontologies (obo_id and label) from EBI-OLS. Earlier I have used the below code to get the obo_id terms and labels

descendants = requests.get(
    "https://www.ebi.ac.uk/ols/api/ontologies/efo/terms/http%253A%252F%252Fpurl.obolibrary.org%252Fobo%252FMONDO_0004992/descendants"
)

As there are more than 1 page so I created total_pages

total_pages = descendants.json()["page"]["totalElements"] // 1000 + 1

cancer_id = []

for i in range(total_pages):
    ## Check the number of id's present in 'totalElements'
    des = {"page": i, "size": descendants.json()["page"]["totalElements"]}
    ## Add the number of 'totalElements' and 'pages' in the new python request for descendants
    cancer_efo = requests.get(
        "https://www.ebi.ac.uk/ols/api/ontologies/efo/terms/http%253A%252F%252Fpurl.obolibrary.org%252Fobo%252FMONDO_0004992/descendants",
        params=des,
    )
    ## Get the number of obo_id's present in the cancer_efo.json
    obo = [obj["obo_id"] for obj in cancer_efo.json()["_embedded"]["terms"]]
    ## Get the number of cancer labels present in the cancer_efo.json
    label = [obj["label"] for obj in cancer_efo.json()["_embedded"]["terms"]]
    data = zip(obo, label)
    cancer_id.extend(data)

The above code worked pretty well with one link Now the issue is that I want to get ontologies for 37 descendent links and maximum links have more than 1 page. I want to get one file (cancer_id) containing all obo_id's and labels from these all 37 links.

I made a separate file called list.txt (Right now I am copying only 3 here)

list.txt

https://www.ebi.ac.uk/ols/api/ontologies/ncit/terms/http%253A%252F%252Fpurl.obolibrary.org%252Fobo%252FNCIT_C4861/descendants
https://www.ebi.ac.uk/ols/api/ontologies/ncit/terms/http%253A%252F%252Fpurl.obolibrary.org%252Fobo%252FNCIT_C3171/descendants
https://www.ebi.ac.uk/ols/api/ontologies/ncit/terms/http%253A%252F%252Fpurl.obolibrary.org%252Fobo%252FNCIT_C3457/descendants

I tried the below code but it is not working

import requests

with open ('list.txt', 'r') as fin:
    links = fin.readlines()

def requestIt(links): 
    cancer_all = requests.get(links)
    return cancer_all.json() 

data = list(map(requestIt, links))

obo = obj["obo_id"] for obj in data