如何转换以下日期时间格式

import datetime

def convert_datetime_format(original_datetime, original_format, target_format):
    # 解析原始日期时间字符串为日期时间对象
    original_datetime_obj = datetime.datetime.strptime(original_datetime, original_format)

    # 将日期时间对象转换为目标格式的字符串
    target_datetime_str = original_datetime_obj.strftime(target_format)

    return target_datetime_str

# 示例使用
original_datetime = "2022-01-01 12:00:00"
original_format = "%Y-%m-%d %H:%M:%S"
target_format = "%Y-%m-%d"
target_datetime = convert_datetime_format(original_datetime, original_format, target_format)
print(target_datetime)  # 输出：2022-01-01