why pytest log has arrow symbol when out put log to file?

[YYYGH]

• This is my logs, I got it from the report directory xxx-attachment.txt file. Where do those arrow symbols come from?

[2020-08-10 17:01:59] conftest.py[line:69] �[32mINFO�[0m init account, account_info:[]
[2020-08-10 17:02:15] login.py[line:190] �[32mINFO�[0m set msg code, phone:[18688888888], msgcode:[411062]
[2020-08-10 17:02:20] login.py[line:183] �[32mINFO�[0m msg:[login mssp success], username:[]

• python version: 3.8.4
  pytest==5.4.3
• system version: windows7
• log config:

logging.basicConfig(level=loglevel,
         format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s',
         datefmt='[%Y-%m-%d %H:%M:%S]' )
run command:
log_format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s'
log_date_format='[%Y-%m-%d %H:%M:%S]'
args = ["--log-level", "info", "--log-format", log_format, "--log-date-format", log_date_format, 
            "--tb", "short", "--capture", "no", "--alluredir", REPORT_DIR, API_TEST_CASE_DIR]
test_result = pytest.main(args)

[Zac-HD]

Looks like a problem with ANSI escape codes for colored output.

Related links: https://en.wikipedia.org/wiki/ANSI_escape_code , https://no-color.org/ , https://docs.pytest.org/en/stable/reference.html#envvar-PY_COLORS

[nicoddemus]

@Zac-HD, I've moved a few questions which have been closed recently by you (thanks again for that!), which have a clear answer, to a Discussion; I think this is a good approach we can take when closing old questions. 👍