title: Verify BigQuery table existence
body: <p>I have a simple function to determine whether a table exists or not:</p>
  
  <pre><code>def check_users_usersmetadata_existence():
      """
      Checks if the table Prod_UserUserMetadata exists
      """
      app_id = get_app_id()
      bigquery_client = bigquery.Client(project=app_id)
      dataset_ref = bigquery_client.dataset('Backup')
      table_ref = dataset_ref.table('Prod_UserUserMetadata')
      try:
          table = bigquery_client.get_table(table_ref)
          if table:
              print('Table {}\'s existence sucessfully proved!'.format(table_ref))
              return True
      except HttpError as error:
          raise
          print('Whoops! Table {} doesn\'t exist here! Ref: {}'.format(table_ref, error.resp.status))
          return False
  </code></pre>
  
  <p>Problem is, it throws a 404 on this line <code>table = bigquery_client.get_table(table_ref)</code> which is ok because the table shouldn't exist. But it won't continue to process the rest of the script. I'm trying to parse it inside a <code>try except</code> wrapper however it's not working. How would I parse this?</p>