def __new__(cls, *args, **kwargs):
        if hasattr(zipfile.ZipFile, '__exit__'):
            return zipfile.ZipFile(*args, **kwargs)
        return super(ContextualZipFile, cls).__new__(cls)
Determine whether or not a GIS backend is currently in use,
dataset/ETHPy150Open akamai-open/api-kickstart/examples/python/tools/ez_setup.py/ContextualZipFile.__new__--crossover with--dataset/ETHPy150Open lukesneeringer/django-pgfields/django_pg/utils/gis.py/_detect_gis_backend