如何将字符串时间转换为unix？

import datetime

def string_to_unix_time(string_time):
    dt = datetime.datetime.strptime(string_time, "%Y-%m-%d %H:%M:%S")
    unix_time = int(dt.timestamp())
    return unix_time

string_time = "2022-01-01 12:00:00"
unix_time = string_to_unix_time(string_time)
print(unix_time)

import java.text.SimpleDateFormat;
import java.util.Date;

public class StringToUnixTime {
    public static void main(String[] args) throws Exception {
        String stringTime = "2022-01-01 12:00:00";
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = sdf.parse(stringTime);
        long unixTime = date.getTime() / 1000;
        System.out.println(unixTime);
    }
}

function stringToUnixTime(stringTime) {
    var date = new Date(stringTime);
    var unixTime = Math.floor(date.getTime() / 1000);
    return unixTime;
}

var stringTime = "2022-01-01 12:00:00";
var unixTime = stringToUnixTime(stringTime);
console.log(unixTime);