New issue 761: Capturing stdout on Windows seems to cause lockup and 100% CPU usage https://bitbucket.org/pytest-dev/pytest/issue/761/capturing-stdout-on-windows-seems-to-cause
Graham Markall: On Windows 7 with Python 3.4.3 capturing stdout seems to keep hold of stdout after `pytest.main` is finished, and sends CPU usage to 100%. For example, I created a file, m.py, which containts only: ``` #!python print('Test') ``` if I then run pytest with `pytest.main()` and allow it to capture stdout, like: ``` C:\Users\gmarkall\tmp\pytest>python Python 3.4.3 |Continuum Analytics, Inc.| (default, Mar 6 2015, 12:06:10) [MSC v.1600 64 bit (AMD64)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> import pytest >>> pytest.main('--pyargs m') ============================= test session starts ============================= platform win32 -- Python 3.4.3 -- py-1.4.27 -- pytest-2.7.1 rootdir: C:\Users\gmarkall\tmp\pytest, inifile: collected 0 items ============================== in 0.00 seconds =============================== 0 >>> ``` then at this point I can no longer enter any input into the interpreter (though pressing Ctrl+C does cause `KeyboardInterrupt` to pop up). However, invoking with `-s` leaves everything working as expected: ``` C:\Users\gmarkall\tmp\pytest>python Python 3.4.3 |Continuum Analytics, Inc.| (default, Mar 6 2015, 12:06:10) [MSC v.1600 64 bit (AMD64)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> import pytest >>> pytest.main('-s --pyargs m') ============================= test session starts ============================= platform win32 -- Python 3.4.3 -- py-1.4.27 -- pytest-2.7.1 rootdir: C:\Users\gmarkall\tmp\pytest, inifile: collecting 0 itemsTest collected 0 items ============================== in 0.02 seconds =============================== 0 >>> ``` and at this point I can still interact with the Python interpreter. _______________________________________________ pytest-commit mailing list pytest-commit@python.org https://mail.python.org/mailman/listinfo/pytest-commit