def i12(res, req, resp):
    return "HTTP_IF_NONE_MATCH" in req.META
from_filter_string(filter_string)
dataset/ETHPy150Open benoitc/dj-webmachine/webmachine/decisions.py/i12--crossover with--dataset/ETHPy150Open roglew/pappy-proxy/pappyproxy/context.py/Filter.from_filter_string