Deprecation warnings with Python 3.9

[juliangilbey]

I'm getting several DeprecationWarnings with the test suite:

=============================== warnings summary ===============================
qtconsole/ansi_code_processor.py:46
  /home/jdg/debian/spyder-packages/qtconsole/build-area/python-qtconsole-5.0.1/.pybuild/cpython3_3.9_qtconsole/build/qtconsole/ansi_code_processor.py:46: DeprecationWarning: invalid escape sequence \[
    CSI_SUBPATTERN = '\[(.*?)([%s])' % CSI_COMMANDS

qtconsole/ansi_code_processor.py:47
  /home/jdg/debian/spyder-packages/qtconsole/build-area/python-qtconsole-5.0.1/.pybuild/cpython3_3.9_qtconsole/build/qtconsole/ansi_code_processor.py:47: DeprecationWarning: invalid escape sequence \]
    OSC_SUBPATTERN = '\](.*?)[\x07\x1b]'

.pybuild/cpython3_3.9_qtconsole/build/qtconsole/tests/test_comms.py::Tests::test_frontend_to_kernel
  /usr/lib/python3/dist-packages/jupyter_client/threaded.py:182: DeprecationWarning: zmq.eventloop.ioloop is deprecated in pyzmq 17. pyzmq now works with default tornado and asyncio eventloops.
    self.ioloop = ioloop.IOLoop()

.pybuild/cpython3_3.9_qtconsole/build/qtconsole/tests/test_comms.py::Tests::test_frontend_to_kernel
  /usr/lib/python3/dist-packages/traitlets/config/configurable.py:82: DeprecationWarning: Passing unrecognized arguments to super(BlockingKernelClient).__init__(signature_scheme='hmac-sha256', key=b'620aa135-fdcbfa03b9a20d52b246d8ac').
  object.__init__() takes exactly one argument (the instance to initialize)
  This is deprecated in traitlets 4.2.This error will be raised in a future release of traitlets.
    super(Configurable, self).__init__(**kwargs)

.pybuild/cpython3_3.9_qtconsole/build/qtconsole/tests/test_comms.py::Tests::test_kernel_to_frontend
  /usr/lib/python3/dist-packages/traitlets/config/configurable.py:82: DeprecationWarning: Passing unrecognized arguments to super(BlockingKernelClient).__init__(signature_scheme='hmac-sha256', key=b'5daddaad-1c01735ac8840bf8616903cf').
  object.__init__() takes exactly one argument (the instance to initialize)
  This is deprecated in traitlets 4.2.This error will be raised in a future release of traitlets.
    super(Configurable, self).__init__(**kwargs)

.pybuild/cpython3_3.9_qtconsole/build/qtconsole/tests/test_completion_widget.py::TestCompletionWidget::test_common_path_complete
.pybuild/cpython3_3.9_qtconsole/build/qtconsole/tests/test_completion_widget.py::TestCompletionWidget::test_droplist_completer_keyboard
.pybuild/cpython3_3.9_qtconsole/build/qtconsole/tests/test_completion_widget.py::TestCompletionWidget::test_droplist_completer_keyboard
.pybuild/cpython3_3.9_qtconsole/build/qtconsole/tests/test_completion_widget.py::TestCompletionWidget::test_droplist_completer_mousepick
.pybuild/cpython3_3.9_qtconsole/build/qtconsole/tests/test_completion_widget.py::TestCompletionWidget::test_droplist_completer_mousepick
.pybuild/cpython3_3.9_qtconsole/build/qtconsole/tests/test_completion_widget.py::TestCompletionWidget::test_droplist_completer_shows
  /home/jdg/debian/spyder-packages/qtconsole/build-area/python-qtconsole-5.0.1/.pybuild/cpython3_3.9_qtconsole/build/qtconsole/completion_widget.py:171: DeprecationWarning: an integer is required (got type float).  Implicit conversion to integers using __int__ is deprecated, and may be removed in a future version of Python.
    point.setY(point.y() + y)

These should be pretty straightforward to fix, I imagine.

Best wishes, Julian

[juliangilbey]

The first two regex issues have now been fixed; the final deprecation warning can be fixed by replacing

    point.setY(point.y() + y)

by

    point.setY(int(point.y() + y))

[ccordoba12]

@juliangilbey, could you give us a hand with that? Thanks!

[juliangilbey]

Ah, @ArchangeGabriel has just fixed this setY issue! I think the remaining DeprecationWarnings are out of the scope of qtconsole itself. I don't know where they all originate, but this can probably be left for the time being.