DeprecationWarning: invalid escape sequence \(

[mtelka]

While running tests I noticed following warnings:

=============================== warnings summary ===============================
tests/test_subtests.py:397
  $(@D)/tests/test_subtests.py:397: DeprecationWarning: invalid escape sequence \(
    "FAIL: test_foo \(__main__\.T\) \[custom message\] \(i=4\).*",

tests/test_subtests.py:398
  $(@D)/tests/test_subtests.py:398: DeprecationWarning: invalid escape sequence \(
    "FAIL: test_foo \(__main__\.T\) \[custom message\] \(i=9\).*",

tests/test_subtests.py:400
  $(@D)/tests/test_subtests.py:400: DeprecationWarning: invalid escape sequence \(
    "FAILED \(failures=6, skipped=4\)",

tests/test_subtests.py:406
  $(@D)/tests/test_subtests.py:406: DeprecationWarning: invalid escape sequence \(
    "FAIL: test_foo \(__main__\.T\.test_foo\) \[custom message\] \(i=4\).*",

tests/test_subtests.py:407
  $(@D)/tests/test_subtests.py:407: DeprecationWarning: invalid escape sequence \(
    "FAIL: test_foo \(__main__\.T\.test_foo\) \[custom message\] \(i=9\).*",

tests/test_subtests.py:409
  $(@D)/tests/test_subtests.py:409: DeprecationWarning: invalid escape sequence \(
    "FAILED \(failures=6, skipped=4\)",

tests/test_subtests.py:466
  $(@D)/tests/test_subtests.py:466: DeprecationWarning: invalid escape sequence \(
    "FAIL: test_foo \(__main__\.T\) \[custom message\] \(i=4\).*",

tests/test_subtests.py:467
  $(@D)/tests/test_subtests.py:467: DeprecationWarning: invalid escape sequence \(
    "FAIL: test_foo \(__main__\.T\) \[custom message\] \(i=9\).*",

tests/test_subtests.py:469
  $(@D)/tests/test_subtests.py:469: DeprecationWarning: invalid escape sequence \(
    "FAILED \(failures=6, skipped=5\)",

tests/test_subtests.py:475
  $(@D)/tests/test_subtests.py:475: DeprecationWarning: invalid escape sequence \(
    "FAIL: test_foo \(__main__\.T\.test_foo\) \[custom message\] \(i=4\).*",

tests/test_subtests.py:476
  $(@D)/tests/test_subtests.py:476: DeprecationWarning: invalid escape sequence \(
    "FAIL: test_foo \(__main__\.T\.test_foo\) \[custom message\] \(i=9\).*",

tests/test_subtests.py:478
  $(@D)/tests/test_subtests.py:478: DeprecationWarning: invalid escape sequence \(
    "FAILED \(failures=6, skipped=5\)",

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html

[nicoddemus]

Thanks @mtelka for the report.

If you have the time/willingness, a PR would be much welcome!