def __init__(self, key):
        self.key = key
:pages: all pages' meta variables, dict type
dataset/ETHPy150Open OpenCageData/python-opencage-geocoder/opencage/geocoder.py/OpenCageGeocode.__init__--crossover with--dataset/ETHPy150Open tankywoo/simiki/simiki/generators.py/CatalogGenerator.__init__