countries.py

import json

with open('countries.json', encoding='utf-8') as data_file:
    countries = json.load(data_file)

print(f"Read {len(countries)} countries from the JSON file.")

continental_pops = {}
for country in countries:
    continent = country['Continent']
    pop = int(country['Population'].split()[0])
    continental_pops[continent] = continental_pops.get(continent, 0) + pop

print('\nThe total population in each continent:')
for continent in sorted(continental_pops, key=lambda c: continental_pops[c], reverse=True):
    print(f"{continent} has a total of {continental_pops[continent]} people.")
print(f'That gives a total of {sum(continental_pops[c] for c in continental_pops)} people on Earth.')

hazard_table = {}
for country in countries:
    for hazard in country['NaturalHazards']:
        hazard_table[hazard] = hazard_table.get(hazard, 0) + 1

print('\nHere are the natural hazards found around the world.')
for hazard in sorted(hazard_table, key=lambda h: (hazard_table[h], h), reverse=True):
    title = hazard[0].upper() + hazard[1:]
    haz_count = hazard_table[hazard]
    print(f"{title} is a hazard in {haz_count} countries.")