def grouper(n, iterable, padvalue=None):
    return zip_longest(*[iter(iterable)]*n, fillvalue=padvalue)
Add a new clause to the active filters. A filter may be either
dataset/ETHPy150Open lsbardel/python-stdnet/stdnet/utils/__init__.py/grouper--crossover with--dataset/ETHPy150Open feincms/feincms/feincms/utils/managers.py/ActiveAwareContentManagerMixin.add_to_active_filters