major bugfix

debug_distance.py

@@ -24,7 +24,7 @@ def get_distance(city1, city2, country1="US", country2="US"):
     city1_coords = get_coordinates(city1, country1)
     city2_coords = get_coordinates(city2, country2)
 
-    if city1_coords is None or city2_coords is None:
+    if (city1_coords is None) or (city2_coords is None):
         return None
 
     return geodesic(city1_coords, city2_coords).km

generate_data.py

@@ -38,6 +38,12 @@ def get_coordinates(city_name, country_code="US"):
         or None if the city is not found.
     """
     search_results = gc.search_cities(city_name, case_sensitive=True)
+    search_results = {
+        k: c
+        for k, c in search_results.items()
+        if (c.get("countrycode") == country_code)
+    }
+
     if not search_results:
         return None
     populations = [city.get("population") for city in search_results]
@@ -69,7 +75,7 @@ def get_distance(city1, city2, country1="US", country2="US"):
     city1_coords = get_coordinates(city1, country1)
     city2_coords = get_coordinates(city2, country2)
 
-    if city1_coords is None or city2_coords is None:
+    if (city1_coords is None) or (city2_coords is None):
         return None
 
     return geodesic(city1_coords, city2_coords).km