r'\[(.*) -0800\]'

This regular expression matches a string that starts with "[" and ends with " -0800]", and captures everything in between (denoted by the parentheses) using the wildcard character "." and the ".*" quantifier, which means "match zero or more of any character".

In other words, it can extract the timestamp in the format "[Month Day Year Hour:Minute:Second -0800]" from a string.

For example, it would match the timestamp in the following string:

"[Tue, 21 Dec 2021 18:39:42 -0800] User logged in."

and capture "Tue, 21 Dec 2021 18:39:42" as the timestamp.

相关问题

用python 脚本，在 ------------------------------------------------------------------------ r3 | svn_0101 | 2023-06-10 18:14:27 +0800 (周六, 10 六月 2023) | 1 line Changed paths: A /branches/test.txt --id=1235---user=李四【版本跟过过过过】急急急急急军军军军牛牛牛牛牛11122------------------------------------------------------------------------ r6 | svn_0101 | 2023-06-11 17:06:23 +0800 (周日, 11 六月 2023) | 1 line Changed paths: A /branches/4.txt A /branches/6.txt --id=1235---user=张三【版本跟过过过过】急急急急急军军军军牛牛牛牛牛11122 提取时间和姓名，并导出到表格中，表格以时间和姓名作为表头

以下是提取信息并导出到表格中的 Python 脚本：

import re
import csv

# 从文本中提取时间和姓名
def extract_info(text):
    pattern = r'^\s*-{72}\n\s*r\d+\s*\|\s*\S+\s*\|\s*(\d{4}-\d{2}-\d{2}\s+\d{2}:\d{2}:\d{2}\s+\+\d{4})\s+\(.*?\)\s+\|\s+\d+\s+line\s+Changed\s+paths:\s+(.*?)\s+--id=\d+---user=(.*?)【版本跟.*$'
    match = re.match(pattern, text, re.DOTALL)
    if match:
        return match.group(1, 3)

# 读取文本文件
with open('svn_log.txt', 'r', encoding='utf-8') as f:
    text = f.read()

# 提取每个记录的时间和姓名
records = []
for match in re.finditer(r'^\s*-{72}\n', text, re.MULTILINE):
    record_text = text[match.start():]
    next_match = re.search(r'^\s*-{72}\n', record_text[72:], re.MULTILINE)
    if next_match:
        record_text = record_text[:72+next_match.start()]
    info = extract_info(record_text)
    if info:
        records.append(info)

# 导出到表格
with open('records.csv', 'w', encoding='utf-8', newline='') as f:
    writer = csv.writer(f)
    writer.writerow(['时间', '姓名'])
    writer.writerows(records)

将以上代码保存为 `extract_info.py` 文件并与 `svn_log.txt` 文件放在同一目录下，然后在命令行中执行以下命令：

python extract_info.py

这样就可以生成 `records.csv` 文件，其中包含提取的时间和姓名信息。

从------------------------------------------------------------------------ r3 | svn_0101 | 2023-06-10 18:14:27 +0800 (周六, 10 六月 2023) | 1 line Changed paths: A /branches/test.txt --id=1235---user=多多【版本跟过过过过】急急急急急军军军军牛牛牛牛牛11122------------------------------------------------------------------------中用Python的正则表达式，提取r3

可以使用Python的re模块来进行正则表达式匹配，具体代码如下：

import re

text = "从------------------------------------------------------------------------ r3 | svn_0101 | 2023-06-10 18:14:27 +0800 (周六, 10 六月 2023) | 1 line Changed paths:    A /branches/test.txt  --id=1235---user=多多【版本跟过过过过】急急急急急军军军军牛牛牛牛牛11122------------------------------------------------------------------------中用Python的正则表达式，提取r3"

match = re.search(r'r\d+', text)
if match:
    print(match.group(0))

运行结果为：

r3

这里使用正则表达式 `r\d+` 来匹配以字母 r 开头，后面跟着一串数字的字符串。`match.group(0)` 表示匹配到的整个字符串。