def __nonzero__(self):

        return not self.identical
If the environmental variable 'HTTP_PROXY' is set, it will most likely be
dataset/ETHPy150Open spacetelescope/PyFITS/pyfits/diff.py/_BaseDiff.__nonzero__--crossover with--dataset/ETHPy150Open cakebread/yolk/yolk/pypi.py/check_proxy_setting