Check airports not connected to a big city

check_missing_cities.py

from neobase import NeoBase

N = NeoBase()

for key in N:
    N.set(key, city_codes=set(N.get(key, "city_code_list")))

for key in sorted(N):
    if "A" not in N.get(key, "location_type"):
        continue
    if N.get(key, "page_rank") is None:  # to speed things up, but this could be removed
        continue
    city_codes = N.get(key, "city_codes")
    for dist, other in N.find_near(key, radius=60):
        if "C" not in N.get(other, "location_type"):
            continue
        if N.get(other, "iata_code") in city_codes:
            continue
        if N.get(other, "page_rank") is None:
            continue
        if N.get(other, "page_rank") <= N.get(key, "page_rank") * 50:
            continue
        print(
            "{0}[{1:.3f}] should have {2}[{3:.3f}] in its city list {4}:"
            " dist {5:.1f}km -- {6}[{7}] => {8}[{9}]".format(
                N.get(key, "iata_code"),
                N.get(key, "page_rank"),
                N.get(other, "iata_code"),
                N.get(other, "page_rank"),
                list(city_codes),
                dist,
                N.get(key, "name"),
                N.get(key, "country_code"),
                N.get(other, "name"),
                N.get(other, "country_code"),
            )
        )