Am I missing any parameters using search_code() of PyGitHub?

I want to search GitHub for codes that include a specific keyword. Using Python, I'm trying to use PyGithub with search_code(), but it is not retrieving anything, am I missing any parameter for the method or something ?

    query = keyword +'+in:file'    results = auth.search_code(query)    # print results    print(f'Found {results.totalCount} result(s)')    results_list = []    for repo in tqdm(range(0, results.totalCount)):        try:            results_list.append([results[repo].repository.name])            time.sleep(2)        except RateLimitExceededException:            time.sleep(60)            results_list.append([results[repo].repository.name])

I have included all libraries and authenticated the access token.I am new to programming, so any help will be appreciated, thanks.