import os
from sys import argv


def main():
    path = argv[1] if len(argv) > 1 else os.getcwd()
    printFilesSize(path)


def printFilesSize(path):
    print(f'|{"-"*35}|')
    print(f'| {"File":<20} {"Size":>12} |\n|{"-"*35}|')
    for file in os.listdir(path):
        base_size = os.stat(f'{path}/{file}').st_size
        if base_size < 1024:
            size = str(base_size) + ' B'
        elif base_size < 1024 ** 2:
            size = f'{base_size // 1024}.{str(base_size % 1024)[0]} KB'
        elif base_size < 1024 ** 3:
            size = f'{base_size // (1024**2)}.{str(base_size % (1024**2))[0]} MB'
        else:
            size = f'{base_size // (1024**3)}.{str(base_size % (1024**3))[0]} GB'
        print(f'| {file:<20} {size:>12} |')
    print(f'|{"-"*35}|')


if __name__ == "__main__":
    main()