使用python计算日志文件中两种模式之间的时长

import re
from datetime import datetime

# 读取日志文件
def read_log_file(file_path):
    with open(file_path, 'r') as file:
        log_data = file.readlines()
    return log_data

# 解析时间戳和模式信息
def parse_log_data(log_data):
    pattern = r'\[(.*?)\] (Mode1|Mode2)'
    log_info = []
    for line in log_data:
        match = re.search(pattern, line)
        if match:
            timestamp = datetime.strptime(match.group(1), '%Y-%m-%d %H:%M:%S')
            mode = match.group(2)
            log_info.append((timestamp, mode))
    return log_info

# 计算两种模式之间的时长
def calculate_duration(log_info, mode1, mode2):
    duration = 0
    start_time = None
    for timestamp, mode in log_info:
        if mode == mode1:
            start_time = timestamp
        elif mode == mode2 and start_time:
            duration += (timestamp - start_time).total_seconds()
            start_time = None
    return duration

# 示例日志文件路径
log_file_path = 'example.log'

# 读取日志文件
log_data = read_log_file(log_file_path)

# 解析时间戳和模式信息
log_info = parse_log_data(log_data)

# 计算两种模式之间的时长
mode1 = 'Mode1'
mode2 = 'Mode2'
duration = calculate_duration(log_info, mode1, mode2)

# 输出结果
print(f"The duration between {mode1} and {mode2} is {duration} seconds.")