def parse_id_to_char_file(in_file):
    """ Get the id to character mapping from the manually curated id to character file """
    id_to_char = {}
    with open(in_file) as id_to_char_file:
        for line in id_to_char_file:
            if len(line.strip()) == 0:
                continue
            char, id_ = line.strip().split(',')
            id_to_char[int(id_)] = char
    return id_to_char