使用python计算日志文件中的时间

import re
from datetime import datetime

# 打开日志文件
with open('logfile.txt', 'r') as file:
    lines = file.readlines()

# 初始化时间变量
prev_time = None
total_time = 0

# 遍历日志文件的每一行
for line in lines:
    # 提取时间信息
    match = re.search(r'\[(.*?)\]', line)
    if match:
        time_str = match.group(1)
        # 转换时间格式
        curr_time = datetime.strptime(time_str, '%Y-%m-%d %H:%M:%S')
        
        # 计算时间差
        if prev_time:
            time_diff = curr_time - prev_time
            total_time += time_diff.total_seconds()
        
        prev_time = curr_time

# 输出总时间间隔
print(f'Total time: {total_time} seconds')