Spyder doesn't work with Qt 5.6 #3145

stonebig · 2016-04-30T13:36:23Z

Description of your problem

What steps will reproduce the problem?

pip install PyQt5.6 on Windows 7 64 / Python3.5 32 bit
instal spyder master from github
launch spyder

What is the expected output? What do you see instead?
spyder doesn't start well (but i see the initial splash screen).
Looking for a log of error but I don't find it

Please provide any additional information below
Did someone tried this already ? Is it supposed to work ?

Versions and main components

Spyder Version:spyder-3.0.0.dev0 of April 29th
Python Version: 3.5.1 32 bit
Operating system: Windows 7 64

Dependencies

Please go to the menu entry Help > Optional Dependencies (or
Help > Dependencies), press the button Copy to clipboard
and paste the contents below:

The text was updated successfully, but these errors were encountered:

stonebig · 2016-04-30T15:14:13Z

finally found it

Traceback (most recent call last):
  File "winpython-32bit-3.5.x.4\python-3.5.1\lib\site-packages\qtpy\QtWebEngineWidgets.py", line 24, in <module>
    from PyQt5.QtWebEngineWidgets import QWebEnginePage
ImportError: QtWebEngineWidgets must be imported before a QCoreApplication instance is created

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "winpython-32bit-3.5.x.4\python-3.5.1\lib\site-packages\spyderlib\app\spyder.py", line 3128, in main
    mainwindow = run_spyder(app, options, args)
  File "winpython-32bit-3.5.x.4\python-3.5.1\lib\site-packages\spyderlib\app\spyder.py", line 3014, in run_spyder
    main.setup()
  File "winpython-32bit-3.5.x.4\python-3.5.1\lib\site-packages\spyderlib\app\spyder.py", line 838, in setup
    from spyderlib.plugins.help import Help
  File "winpython-32bit-3.5.x.4\python-3.5.1\lib\site-packages\spyderlib\plugins\help.py", line 21, in <module>
    from qtpy.QtWebEngineWidgets import QWebEnginePage
  File "winpython-32bit-3.5.x.4\python-3.5.1\lib\site-packages\qtpy\QtWebEngineWidgets.py", line 28, in <module>
    from PyQt5.QtWebKitWidgets import QWebPage as QWebEnginePage
ImportError: No module named 'PyQt5.QtWebKitWidgets'

stonebig · 2016-04-30T15:30:22Z

maybe the issue similar to this (and so PyQt5.6.0 issue ?): https://www.riverbankcomputing.com/pipermail/pyqt/2016-April/037406.html

stonebig · 2016-04-30T16:00:06Z

this may be the core issue:

ImportError: QtWebEngineWidgets must be imported before a QCoreApplication instance is created

stonebig · 2016-05-01T18:34:13Z

so, If I had a line "from qtpy.QtWebEngineWidgets import QWebEnginePage" in app/spyder.py line 91

#stonebig
from qtpy.QtWebEngineWidgets import QWebEnginePage
#==============================================================================
# Create our QApplication instance here because it's needed to render the
# splash screen created below
#==============================================================================
from spyderlib.utils.qthelpers import qapplication
MAIN_APP = qapplication()

I get further, but still crash:

Traceback (most recent call last):
  File "D:\WinPython\basedir35\buildQt5\winpython-32bit-3.5.x.4\python-3.5.1\lib\site-packages\spyderlib\app\spyder.py", line 3129, in main
    mainwindow = run_spyder(app, options, args)
  File "D:\WinPython\basedir35\buildQt5\winpython-32bit-3.5.x.4\python-3.5.1\lib\site-packages\spyderlib\app\spyder.py", line 3015, in run_spyder
    main.setup()
  File "D:\WinPython\basedir35\buildQt5\winpython-32bit-3.5.x.4\python-3.5.1\lib\site-packages\spyderlib\app\spyder.py", line 840, in setup
    self.help = Help(self)
  File "D:\WinPython\basedir35\buildQt5\winpython-32bit-3.5.x.4\python-3.5.1\lib\site-packages\spyderlib\plugins\help.py", line 359, in __init__
    self.rich_text = RichText(self)
  File "D:\WinPython\basedir35\buildQt5\winpython-32bit-3.5.x.4\python-3.5.1\lib\site-packages\spyderlib\plugins\help.py", line 186, in __init__
    self.webview = FrameWebView(self)
  File "D:\WinPython\basedir35\buildQt5\winpython-32bit-3.5.x.4\python-3.5.1\lib\site-packages\spyderlib\widgets\browser.py", line 263, in __init__
    self._webview.linkClicked.connect(self.linkClicked)
AttributeError: 'WebView' object has no attribute 'linkClicked'

jitseniesen · 2016-05-01T18:58:26Z

Issue #3073 is also about QtWebKitWidgets (but on a Mac); the solution there was to downgrade qt5 to version 5.5.

stonebig · 2016-05-01T19:28:32Z

that is not an option for me, as on Windows + Python3.5, I got only PyQt5.6.0.

stonebig · 2016-05-01T19:31:51Z

I feel bad reading https://wiki.qt.io/Porting_from_QtWebKit_to_QtWebEngine.

Fix seems not so simple... I see an example in C++ there http://stackoverflow.com/questions/36446246/how-to-emulate-linkclickedqurl-signal-in-qwebengineview/36447833

this one in PyQt:
http://stackoverflow.com/questions/12240195/pyqt-webkit-and-html-forms-fetching-output-and-closing-window

this one seems clother
https://github.com/The-Compiler/qutebrowser/blob/master/qutebrowser/browser/webpage.py#l551

there seems to be a commit example here with the same need to switch away from "linkedClicked" qutebrowser/qutebrowser@c18027f

it's a GPL project, some may disagree I copy/Paste the code, and re-interpreting things to do are way over me

stonebig · 2016-05-01T20:05:13Z

I can comment with a "#":

the 2 lines of "setLinkDelegationPolicy" and "ClickedLink" in plugin/help.py (line 481)
the 1 line of "ClickedLink" in widgets/browser.py (line 263).

No crash, but spyder do something then stop.

stonebig · 2016-05-02T06:25:57Z

File "D:\WinPython\basedir35\buildQt5\winpython-32bit-3.5.x.4\python-3.5.1\lib\site-packages\spyderlib\utils\qthelpers.py", line 242, in create_action
action.triggered.connect(triggered)
TypeError: decorated slot has no signature compatible with triggered(bool)

ccordoba12 · 2016-05-14T21:32:10Z

A pull request is coming to fix several problems we're having with Qt 5.6. They will be fixed for Spyder 3.0 beta3 :-)

Nodd · 2016-05-30T14:18:49Z

Heh, I just upgraded my system, and 💣 ! Any news ?

ccordoba12 · 2016-06-01T02:51:04Z

A PR is coming :-)

El 30/05/16 a las 09:18, Joseph Martinot-Lagarde escribió:

Heh, I just upgraded my system, and 💣 ! Any news ?

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davidovitch · 2016-06-01T20:32:45Z

You can work around it by compiling PyQt 5.5.1 (I have the entire Qt 5.6 family installed system wide) and installing it in a virtual environment (downgrading my system Qt installation is too complex). On the bright side: now I know how to install multiple versions of PyQt in different virtualenvs :-)

edit: to be clear, you can compile PyQt 5.5.1 for you virtualenv while having Qt 5.6.0 installed system wide.

I've looked here for inspiration:

stonebig changed the title ~~Qt5.6 and Spyder3.0.0dev0 of April 29th on Windows7 / Python3.5t~~ Qt5.6 and Spyder3.0.0dev0 of April 29th on Windows7 / Python3.5 Apr 30, 2016

stonebig mentioned this issue Apr 30, 2016

release 2016-03 Follow-up winpython/winpython#309

Closed

stonebig changed the title ~~Qt5.6 and Spyder3.0.0dev0 of April 29th on Windows7 / Python3.5~~ Qt5.6 and Spyder3.0.0dev0 of April 29th on Windows7 / Python3.5 (QtWebEngine replacing QtWebKit) May 1, 2016

malfatti mentioned this issue May 12, 2016

[Spyder 3.0.0dev, python3] TypeError: decorated slot has no signature compatible with triggered(bool) #3163

Closed

ccordoba12 added type:Bug Package:PyQt labels May 14, 2016

ccordoba12 added this to the v3.0beta3 milestone May 14, 2016

ccordoba12 changed the title ~~Qt5.6 and Spyder3.0.0dev0 of April 29th on Windows7 / Python3.5 (QtWebEngine replacing QtWebKit)~~ Spyder doesn't work with Qt 5.6 May 14, 2016

ccordoba12 mentioned this issue Jun 2, 2016

Support PyQt 5.6 #3198

Merged

2 tasks

ccordoba12 closed this as completed in #3198 Jun 5, 2016

kcarnold mentioned this issue Jun 27, 2016

Spyder 3.0 Beta3 fails to start in OS X #3267

Closed

thePalindrome mentioned this issue Oct 9, 2017

Crash because not compatible with QT 5.6 matzman666/PyPipboyApp#58

Open

ridhi1412 mentioned this issue Apr 19, 2018

Spyder fails to start on Linux #6990

Closed

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Spyder doesn't work with Qt 5.6 #3145

Spyder doesn't work with Qt 5.6 #3145

stonebig commented Apr 30, 2016 •

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Spyder doesn't work with Qt 5.6 #3145

Spyder doesn't work with Qt 5.6 #3145

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stonebig commented Apr 30, 2016 • edited Loading

Description of your problem

Versions and main components

Dependencies

stonebig commented Apr 30, 2016 • edited Loading

stonebig commented Apr 30, 2016

stonebig commented Apr 30, 2016

stonebig commented May 1, 2016 • edited Loading

jitseniesen commented May 1, 2016

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stonebig commented May 2, 2016

ccordoba12 commented May 14, 2016

Nodd commented May 30, 2016

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