import re


def camel_to_snake(name):
    # 将大写字母前加上下划线，并将整个字符串转换为小写
    return re.sub(r'(?<!^)(?=[A-Z])', '_', name).lower()


def snake_to_camel(name):
    # 将下划线后的字母转换为大写，并删除下划线
    return ''.join(word.capitalize() for word in name.split('_'))