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path: root/day1/task1/task1.py
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import os

CHUNK_SIZE = 1024

character = input('Введите один символ: ')
while len(character) != 1:
    character = input('Введите РОВНО один символ: ')


path = os.path.join(os.getcwd(), 'task1_data.txt')


try:
    f = open(path)

except FileNotFoundError as e:
    exception_path = str(e).strip('[Errno 2] No such file or directory:')[1:-1]
    print(f'"{exception_path}" не существует')

except PermissionError as e:
    exception_path = str(e).strip('[Errno 13] Permission denied:')[1:-1]
    print(f'Файл "{exception_path}" не доступен для чтения/записи')

except IsADirectoryError as e:
    exception_path = str(e).strip('[Errno 21] Is a directory:')[1:-1]
    print(f'"{exception_path}" является директорией')

else:
    data = f.read(CHUNK_SIZE)
    i = data.count(character)
    while data:
        data = f.read(CHUNK_SIZE)
        i += data.count(character)

    f.close()

    print(f'В данном файле {i} символов "{character}"')