def region_handler(self, region, cities):
"""Populate the list of cities when a continent is selected."""
cities.remove_all()
for city in get_timezone(region.get_active_id(), []):
cities.append(city, city)
def region_handler(self, regions, cities):
"""Populate the list of cities when a continent is selected."""
cities.remove_all()
for city in get_timezone(regions.get_active_id(), []):
cities.append(city, city)