def del_restricted_symbols(album_title):
    """Returns the name of the directory without the restricted symbols.

    Parameters:
    -----------
    :album_title: str, name of the album;
    :returns:     str, name of the directory
    """

    # Symbols that are not allowed in Windows dir names
    # Change title to prevent exceptions during download
    sym_replace = {'"', ':', '&', '.', '|', '\\', '/', '*', '?', '<', '>'}
    title = album_title.strip()

    for s in title:
        if s in sym_replace:
            title = '-'.join(title.split(s))

    return title