Python with statement using generator

with-statement-generator.py

@contextlib.contextmanager
def google_search_results(terms, page=1, custom_search_id=''):
    params = {
        'q': terms,
        'cx': custom_search_id or app.config.get('GOOGLE_CUSTOM_SEARCH_ID', ''),
        'start': ((page - 1) * 10) + 1,
        'num': 10
    }
    yield custom_search_service.list(**params).execute()


@app.route('/search/')
def results():
    page = int(request.args.get('page', '1'))
    terms = request.args.get('terms', '')

    with google_search_results(terms, page=page) as results:
        total = int(results['searchInformation']['totalResults'])
        params = {
            'num_pages': int(ceil(total / 10)),
            'terms': terms,
            'page': page,
            'results': results
        }
        return render_template('results.jinja', **params)