pattern validation in QueryDict.get()

In url.py, we could use regex to limit string patterns.

Is there anything similar for QueryDict.get()?

e.g. given

q = request.GET.get(key='q', default=10, pattern=r'\d+')  # new parameter pattern

If value of q in //path?q=xxx does not match the pattern, then give default value.

--

Chi

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