如何以相同的方式格式化相同函数创建的日志记录

Question

是否可以以相同的方式格式化由于运行特定功能而创建的所有日志记录？

例如，而不是：

import requests
import logging

logging.basicConfig(level=logging.DEBUG)


def foo():
    logging.info("Running foo")
    requests.get("http://www.google.com")


def bar():
    logging.info("Running bar")
    requests.get("http://www.google.com")


foo()
bar()

给予：

INFO:root:Running foo
DEBUG:urllib3.connectionpool:Starting new HTTP connection (1): www.google.com:80
DEBUG:urllib3.connectionpool:http://www.google.com:80 "GET / HTTP/1.1" 200 5499
INFO:root:Running bar
DEBUG:urllib3.connectionpool:Starting new HTTP connection (1): www.google.com:80
DEBUG:urllib3.connectionpool:http://www.google.com:80 "GET / HTTP/1.1" 200 5470

我想要类似的东西：

foo | INFO:root:Running foo
foo | DEBUG:urllib3.connectionpool:Starting new HTTP connection (1): www.google.com:80
foo | DEBUG:urllib3.connectionpool:http://www.google.com:80 "GET / HTTP/1.1" 200 5499
bar | INFO:root:Running bar
bar | DEBUG:urllib3.connectionpool:Starting new HTTP connection (1): www.google.com:80
bar | DEBUG:urllib3.connectionpool:http://www.google.com:80 "GET / HTTP/1.1" 200 5470

Answer 1

输出看起来会有所不同，因为函数名称将被调用的函数名称覆盖，如下面的输出所示。

    import requests
    import logging
    logger = logging.getLogger()
    FORMAT = "%(funcName)20s | %(levelname)s:%(name)s: %(message)s"
    logging.basicConfig(format=FORMAT)
    logger.setLevel(logging.DEBUG)


def foo():
    logging.info(f"Starting {foo.__name__}")
    requests.get("http://www.google.com")



def bar():
    logging.info(f"Starting {bar.__name__}")
    requests.get("http://www.google.com")


foo()
bar()

输出：

             foo | INFO:root: Starting foo
       _new_conn | DEBUG:urllib3.connectionpool: Starting new HTTP connection (1): www.google.com:80
   _make_request | DEBUG:urllib3.connectionpool: http://www.google.com:80 "GET / HTTP/1.1" 200 5778
             bar | INFO:root: Starting bar
       _new_conn | DEBUG:urllib3.connectionpool: Starting new HTTP connection (1): www.google.com:80
   _make_request | DEBUG:urllib3.connectionpool: http://www.google.com:80 "GET / HTTP/1.1" 200 5745

Answer 2

您正在寻找的是格式化程序。它们内置于日志记录模块中。

import logging

FORMAT = "%(funcName)s - %(asctime)s - %(levelname)s - %(message)s"

logging.basicConfig(format=FORMAT, level=logging.DEBUG)

def foo():
    logging.info("In foo")

def bar():
    logging.info("In bar")

foo()
bar()

将输出：

foo - 2020-04-07 17:55:07,125 - INFO - In foo
bar - 2020-04-07 17:55:07,132 - INFO - In bar

docs 解释了所有关于它们的信息。您可以将各种自定义输出添加到每个日志记录调用。