I think this bug has been introduced by the wait_for_query tqdm helper in #352

Dropping the previous version resolves pipenv install google-cloud-bigquery==2.3.1.

Some queries now hang indefinitely at "query is running" or "complete":

    query_job = client.query(query, job_config=job_config)
    df = query_job.to_dataframe(progress_bar_type='tqdm')

However running the same without the progress bar returns the dataframe

    query_job = client.query(query, job_config=job_config)
    df = query_job.to_dataframe(progress_bar_type=None)

The following also returns the dataframe:

    query_job = client.query(query, job_config=job_config)
    df = query_job.to_dataframe(progress_bar_type=None)
    df = query_job.to_dataframe(progress_bar_type='tqdm')

Environment details

• OS type and version: OS X 10.15.7
• Python version: python --version 3.6.10
• pip version: pip --version pip 20.2.4
• google-cloud-bigquery version: pip show google-cloud-bigquery Version: 2.4.0