Python’s new template strings, or t-strings, give you a much more powerful way to format data than the old ... output.append(str(item).upper()) else: output.append(item) return "".join(output ...

To use it with Python ... format pagespeed_results_json = json.loads(pagespeed_results) # Insert returned json response into response_object response_object[url] = pagespeed_results_json time ...