def __init__(self, f):
        self.__buf = [c for c in ''.join(f.readlines())]
Internal helper: build a function that ties an index with each result.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/grizzled/grizzled/io/__init__.py/PushbackFile.__init__--crossover with--dataset/ETHPy150Open GoogleCloudPlatform/python-compat-runtime/appengine-compat/exported_appengine_sdk/google/appengine/datastore/datastore_rpc.py/BaseConnection.__create_result_index_pairs