Feeding the animals v2.0

#!/usr/local/bin/python3.7
# -*- coding: utf-8 -*import

animals = []
zones = []


def it_is(l: list, k: str):
    return [x for x in l if x[0] == k]


def idx(l: list, k: str):
    return l.index(it_is(l, k)[0])


command = input()

while command != 'Last Info':
    tokens = command.split(':')
    command_type = tokens[0]
    animal = tokens[1]
    food = int(tokens[2])
    area = tokens[3]

    if command_type == 'Add':
        if it_is(zones, area):
            if not it_is(animals, animal):
                zones[idx(zones, area)][1] += 1
        else:
            zones.append([area, 1])
        if it_is(animals, animal):
            animals[idx(animals, animal)][1] += food
        else:
            animals.append([animal, food])
    elif command_type == 'Feed':
        if it_is(animals, animal):
            animals[idx(animals, animal)][1] -= food
            if animals[idx(animals, animal)][1] <= 0:
                print(f'{animal} was successfully fed')
                del animals[idx(animals, animal)]
                zones[idx(zones, area)][1] -= 1
            if zones[idx(zones, area)][1] <= 0:
                del zones[idx(zones, area)]
    command = input()


sorted_animals = sorted(sorted(animals, key=lambda x: x[0]), key=lambda x: x[1], reverse=True)
sorted_zones = sorted(zones, key=lambda x: x[1], reverse=True)
print('Animals:')
[print(f'{x[0]} -> {x[1]}g') for x in sorted_animals]
print('Areas with hungry animals:')
[print(f'{x[0]} : {x[1]}') for x in sorted_zones]