您可以使用自定义Formatter，它将处理您尝试记录的record的exc_text。
下面的MyFormatter将检查记录是否有异常文本。如果没有，它将使用self.formatException创建它。然后，由于record.exc_text是一个字符串，将跟踪存储为文本，并使用\n作为行与行之间的分隔符，因此可以使用.split("\n")[-1]保留最后一行。

import logging

class MyFormatter(logging.Formatter):
    def format(self, record):
        # https://github.com/python/cpython/blob/main/Lib/logging/__init__.py#L711
        if not record.exc_text:
            record.exc_text = self.formatException(record.exc_info)
        record.exc_text = record.exc_text.split("\n")[-1]
        return super().format(record)

然后，添加以下代码以使用新的MyFormatter：

def a(x):
    return b(x)

def b(x):
    return c(x)

def c(x):
    return d(x)

def d(x):
    return x / 0

logger = logging.getLogger("foobar")
logger.setLevel(logging.INFO)

stream_handler = logging.StreamHandler()
stream_handler.setFormatter(MyFormatter(fmt="%(name)s - %(levelname)s - %(message)s"))
logger.addHandler(stream_handler)

try:
    a(1)
except Exception as e:
    logger.info('yt-dlp initated a break', exc_info=True)

你会得到：

foobar - INFO - yt-dlp initated a break
ZeroDivisionError: division by zero

而不是以前的：

foobar - INFO - yt-dlp initated a break
Traceback (most recent call last):
  File "70704112.py", line 31, in <module>
    a(1)
  File "70704112.py", line 12, in a
    return b(x)
  File "70704112.py", line 15, in b
    return c(x)
  File "70704112.py", line 18, in c
    return d(x)
  File "70704112.py", line 21, in d
    return x / 0
ZeroDivisionError: division by zero