如何在python - regex中解析多行catalina日志

import re

pattern = r'\[(.*?)\] (.*?) (.*?) (.*?): (.*?)\n(.*?)\n\n'

with open('catalina.log', 'r') as file:
    log_data = file.read()

matches = re.findall(pattern, log_data, re.DOTALL)

for match in matches:
    timestamp = match[0]
    log_level = match[1]
    class_name = match[2]
    thread_name = match[3]
    log_message = match[4]
    stack_trace = match[5]
    
    # 在这里可以根据需要对匹配结果进行进一步处理或输出