python - 使用 pytest 记录毫秒数

Question

目标
在 pytest 的日志输出上显示毫秒.
我尝试过的事情
pytest 文档伪装成 use time.strftime 用于日志记录的兼容字符串，所以我不能使用 %f格式为微秒，如 datetime.strftimepytest.ini

[pytest]
log_cli = True
log_cli_format = %(asctime)s %(levelname)s %(message)s
log_cli_level = DEBUG
#log_cli_date_format = %H:%M:%S:%f

test_this.py

import logging

def test_me():
  logging.info('something')

$ python3 -m pytest
==== test session starts ====
[...]

test_this.py::test_me
----- live log call -----
19:18:10 INFO something
PASSED                                                                                                                          [100%]

=== 1 passed in 0.01s ===

我不明白的 pytest log_cli_format documents

Sets a logging-compatible string used to format live logging messages.

但是，默认情况下 logging utility日志 %(asctime)s以毫秒为单位

Human-readable time when the LogRecord was created. By default this is of the form ‘2003-07-08 16:49:45,896’ (the numbers after the comma are millisecond portion of the time).

题
是否有任何简单的解决方案来显示毫秒？日志包默认的方式是什么？它必须是hacky吗？

Answer 1

即使 pytest 覆盖日志记录的默认日期格式，额外的 %(msecs)d来自 LogRecords attributes似乎正是针对这种问题。pytest.ini

[pytest]
log_cli = True
log_cli_format = %(asctime)s.%(msecs)03d %(levelname)s %(message)s
log_cli_level = DEBUG

输出

$ python3 -m pytest
==== test session starts ====
[...]

test_this.py::test_me
----- live log call -----
19:56:57.249 INFO something
PASSED                                                                                                                          [100%]

=== 1 passed in 0.01s ===