import pandas as pd
from typing import Callable, Dict,List, Union
from pytz import timezone
TZ_INFO = timezone("Asia/Shanghai")   #使用东八区时区
#------------------------------------------------------------------------------------
def utc_to_local(timestamp:Union[str, float,int]):
    """
    把timestamp或者str的datetime转化成东八区的datetime
    """
    if isinstance(timestamp,str):
        if "Z" in timestamp:
            if "." in timestamp:
                local_time = pd.to_datetime(timestamp,format="%Y-%m-%dT%H:%M:%S.%fZ") + timedelta(hours=8)
            else:
                local_time = pd.to_datetime(timestamp,format="%Y-%m-%dT%H:%M:%SZ") + timedelta(hours=8)
        elif "T" in timestamp:
            if "." in timestamp:
                local_time = pd.to_datetime(timestamp,format="%Y-%m-%dT%H:%M:%S.%f") + timedelta(hours=8)
            else:
                local_time = pd.to_datetime(timestamp,format="%Y-%m-%dT%H:%M:%S") + timedelta(hours=8)
    elif isinstance(timestamp,float):
        local_time = pd.to_datetime(timestamp,unit = "s")   + timedelta(hours=8)
    elif isinstance(timestamp,int):
        #秒时间戳
        if len(str(timestamp)) == 10:
            local_time = pd.to_datetime(timestamp,unit = "s")   + timedelta(hours=8)
        #毫秒时间戳
        elif len(str(timestamp)) == 13:
            local_time = pd.to_datetime(timestamp,unit = "ms")   + timedelta(hours=8)
        #微妙时间戳
        elif len(str(timestamp)) == 16:
            local_time = pd.to_datetime(timestamp,unit = "us")   + timedelta(hours=8)
        #纳秒时间戳
        elif len(str(timestamp)) == 19:
            local_time = pd.to_datetime(timestamp,unit = "ns")   + timedelta(hours=8)
    return local_time.tz_localize(TZ_INFO)  #pandas timestamp添加时区

大佬，请问这个关于时区方面的功能函数，看上去比较高大上，但是如何调用呢，方便给出一个命令行，

调用该函数包括函数参数列表（特别是函数的参数列表比较复杂：timestamp:Union[str, float,int]）的例子吗，

好让我们多多参考哦，多谢啦!

@泼奇 该函数适用于交易所传入0时区的datetime需要统一到东八区时间，举个例子：
收到委托回报的order_datetime可以这样写

order_datetime = utc_to_local(data["created_at"] / 1000)(这里不除1000也是可以转换的)