如何在python中将原始时间转换为UTC时间？

import datetime
import pytz

def convert_to_utc(raw_time, timezone):
    # 创建原始时间对象
    naive_time = datetime.datetime.strptime(raw_time, "%Y-%m-%d %H:%M:%S")

    # 设置原始时间的时区
    source_timezone = pytz.timezone(timezone)
    localized_time = source_timezone.localize(naive_time)

    # 转换为UTC时间
    utc_time = localized_time.astimezone(pytz.utc)

    return utc_time

# 示例调用
raw_time = "2022-01-01 12:00:00"
timezone = "Asia/Shanghai"
utc_time = convert_to_utc(raw_time, timezone)
print(utc_time)