use dict.get rather than if key in dict

[hobson]

Is:

if 'counter' not in request_data['context']:
            request_data['context']['counter'] = 1
        else:
            request_data['context']['counter']

Should be:

request_data['context']['counter'] = int(
    request_data['context'].get('counter', 0)) + 1

alquist/bots/math_practice/states/Counter.py

Line 7 in 280d99f

if 'counter' not in request_data['context']: