Решение задач Code Wars на Python. Counting sheep. 8 kyu

Consider an array/list of sheep where some sheep may be missing from their place. We need a function that counts the number of sheep present in the array (true means present). Разбор задач с Code Wars: Code Wars 8 kyu - https://www.youtube.com/playlist?list=PLM1zOqhHO_ezn83z8QrRdoqowt-juSxFU Code Wars 7 kyu - https://www.youtube.com/playlist?list=PLM1zOqhHO_ezDalqwUZZLBjXzxXyZSFuz Разбор задач по Python (Питон): "Поколение Python": курс для профессионалов - https://www.youtube.com/playlist?list=PLM1zOqhHO_ey8vI3oZaErOibP8VN3Vy-s "Поколение Python": курс для продвинутых - https://www.youtube.com/playlist?list=PLM1zOqhHO_ezHTyfdlxwyk_UL9rlSIY7T "Поколение Python": курс для начинающих - https://youtube.com/playlist?list=PLM1zOqhHO_ezHTyfdlxwyk_UL9rlSIY7T "Программирование на Python" - https://www.youtube.com/playlist?list=PLM1zOqhHO_eyvNpqCgbdXOaFqfFxheW6X Единоразовая поддержка - https://www.donationalerts.com/r/roman_vk