[osm/boundaries] check polygons with an ISO3166-2 as well in the country polygon index in case the country polygon is funky

scripts/geodata/countries/constants.py

@@ -1,3 +1,5 @@
+import pycountry
+
 
 class Countries(object):
     AFGHANISTAN = 'af'
@@ -252,3 +254,9 @@ class Countries(object):
 
     FORMER_SOVIET_UNION_COUNTRIES = set([RUSSIA, UKRAINE, BELARUS, KAZAKHSTAN, AZERBAIJAN, KYRGYZSTAN, GEORGIA, UZBEKISTAN, ARMENIA, TAJIKISTAN, MOLDOVA, TURKMENISTAN, LATVIA, LITHUANIA, ESTONIA])
     CJK_COUNTRIES = set([CHINA, JAPAN, SOUTH_KOREA, TAIWAN, HONG_KONG, MACAO])
+
+    all_country_iso_codes = set([c.alpha2.lower() for c in pycountry.countries])
+
+    @classmethod
+    def is_valid_country_code(cls, alpha2_code):
+        return alpha2_code and alpha2_code.lower() in cls.all_country_iso_codes