The https://github.com/googleapis/python-bigquery/blob/main/samples/create_job.py code sample appears here: https://cloud.google.com/bigquery/docs/running-jobs#running_jobs_using_client_libraries

This sample requires two improvements:

• That section is about any kind of job, not just queries. As such, it should use the create_job method instead of the more specific query method. There should be comments that it is recommended to use the corresponding method for query/copy/load/extract.
• Remove job_id_prefix logic, as labels cover similar functionality and are recommended over custom job IDs.
• Move the sample to the samples/snippets directory. Needs to be done in 2 separate PRs so that the existing samples in the docs don't 404.