1. 系统Evtx日志的读取

import win32evtlog
import win32evtlogutil

def ReadLog(logType="Application"):
    """

    :param computer:
    :param logType: 例如：Application System
    :param dumpEachRecord:
    :return:
    """
    py_handle = win32evtlog.OpenEventLog(None, logType)  # 打开日志文件
    numRecords = win32evtlog.GetNumberOfEventLogRecords(py_handle)  # 日志记录的数量
    while 1:
        # 循环读取日志
        data_list = win32evtlog.ReadEventLog(py_handle,
                                             win32evtlog.EVENTLOG_BACKWARDS_READ | win32evtlog.EVENTLOG_SEQUENTIAL_READ,
                                             0)
        if not data_list:
            break

        for i in data_list:
            eventid = i.EventID & 0xFFFF  # 事件ID
            msg = win32evtlogutil.SafeFormatMessage(i, logType)  # 日志内容
            event_time = i.TimeWritten  # 日志事件事件
            print(eventid, msg.strip(), event_time)
    win32evtlog.CloseEventLog(py_handle)  # 关闭句柄


ReadLog("System")

2. 导出、另存目标事件日志

import win32evtlog
import os
import time
def exportLog(path, save_path, event_id):
    """
    导出、另存目标事件日志，获取所有条目
    :param path: 源日志，如System、Application
    :param save_path: 保存路径，evtx格式
    :param event_id:事件ID
    :return:
    """
    win32evtlog.EvtExportLog(path, save_path, 1, "*[System[(Level=4) and (EventID={}})]]".format(event_id), None)
    while 1:
        if os.path.exists(save_path):
            return
        else:
            time.sleep(1)

3. 读取自定义的日志文件

def readBackupLog(path):
    """
    读取备份的日志文件
    :param path: 自定义日志文件的路径
    :return:
    """
    py_handle = win32evtlog.OpenBackupEventLog(None, "{}".format(path))  # 打开日志文件
    numRecords = win32evtlog.GetNumberOfEventLogRecords(py_handle)  # 日志记录的数量
    while 1:
        # 循环读取日志
        data_list = win32evtlog.ReadEventLog(py_handle,
                                             win32evtlog.EVENTLOG_BACKWARDS_READ | win32evtlog.EVENTLOG_SEQUENTIAL_READ,
                                             0)
        if not data_list:
            break

        for i in data_list:
            eventid = i.EventID & 0xFFFF  # 事件ID
            msg = win32evtlogutil.SafeFormatMessage(i, "System")  # 日志内容，格式化输出消息
            event_time = i.TimeWritten  # 日志事件事件
            print(eventid, msg.strip(), event_time)
    win32evtlog.CloseEventLog(py_handle)  # 关闭句柄