The variable retry_after is not converted into a number before passing it into the sleep() function. This causes an error when a 429 response code with the retry-after header is received. time.sleep(int(retry_after)) might be enough to deal with this.
[/usr/local/lib/python3.7/dist-packages/wikidataintegrator/wdi_core.py](https://localhost:8080/#) in execute_sparql_query(query, prefix, endpoint, user_agent, as_dataframe, max_retries, retry_after)
131 retry_after = response.headers["retry-after"]
132 print("service unavailable. sleeping for {} seconds".format(retry_after))
--> 133 time.sleep(retry_after)
134 continue
135 response.raise_for_status()
TypeError: an integer is required (got type str)
The variable
retry_afteris not converted into a number before passing it into thesleep()function. This causes an error when a 429 response code with theretry-afterheader is received.time.sleep(int(retry_after))might be enough to deal with this.