Spyder won't start after upgrade to 3.1.0 due to an error with QRegularExpression

[BeateBier]

Description of your problem

What steps will reproduce the problem?

1. Start spyder from terminal

What is the expected output? What do you see instead?
I expect spyder to start, instead I get an error:

spyder
QML debugging is enabled. Only use this in a safe environment.
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/spyder/app/mainwindow.py", line 2979, in main
mainwindow = run_spyder(app, options, args)
File "/usr/lib/python2.7/site-packages/spyder/app/mainwindow.py", line 2883, in run_spyder
main.setup()
File "/usr/lib/python2.7/site-packages/spyder/app/mainwindow.py", line 780, in setup
message=_("Spyder Internal Console\n\n"
File "/usr/lib/python2.7/site-packages/spyder/plugins/console.py", line 79, in init
self.find_widget.set_editor(self.shell)
File "/usr/lib/python2.7/site-packages/spyder/widgets/findreplace.py", line 280, in set_editor
self.refresh()
File "/usr/lib/python2.7/site-packages/spyder/widgets/findreplace.py", line 259, in refresh
self.find()
File "/usr/lib/python2.7/site-packages/spyder/widgets/findreplace.py", line 326, in find
self.editor.find_text('')
File "/usr/lib/python2.7/site-packages/spyder/widgets/mixins.py", line 513, in find_text
found_cursor = self.document().find(pattern, cursor, findflag)
TypeError: arguments did not match any overloaded call:
QTextDocument.find(str, int position=0, QTextDocument.FindFlags options=0): argument 1 has unexpected type 'QRegularExpression'
QTextDocument.find(QRegExp, int position=0, QTextDocument.FindFlags options=0): argument 1 has unexpected type 'QRegularExpression'
QTextDocument.find(str, QTextCursor, QTextDocument.FindFlags options=0): argument 1 has unexpected type 'QRegularExpression'
QTextDocument.find(QRegExp, QTextCursor, QTextDocument.FindFlags options=0): argument 1 has unexpected type 'QRegularExpression'

Please provide any additional information below

Versions and main components

• Spyder Version: 3.1.0
• Python Version: 2.7.12
• Operating system: OpenSuse 13.2

Dependencies

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Help > Dependencies), press the button Copy to clipboard
and paste the contents below:
I can't get spyder to start, so ...

[goanpeca]

@rlaverde

[ccordoba12]

What are your qt and pyqt versions?

[BeateBier]

PyQt5: 5.3.1
PyQt4: 4.11.1
How do I get the Qt-version?
Yast is showing me a bunch of libs (for instance "libqt5-qtbase-devel"), from there:
Qt5: 5.4.2
Qt4: 4.8.6

[rlaverde]

I think this is a bug of Qt5, you should upgrade to PyQt>=5.5

QRegularExpression was introduced in Qt 5.0 but QTextDocument.find supporting QRegularExpression was introduced in Qt 5.5

@ccordoba12 Since we are supporting PyQt5 5.2+, Should we implement a workaround for this?

[ccordoba12]

@rlaverde, yes. Please add a check for qt 5.5+ where you introduced this feature.

This is a priority for 3.1.1, so I want a PR as soon as possible :-)

[BeateBier]

you should upgrade to PyQt>=5.5

I can't. Pip can't and opensuse does not offer an update.

Pip:

pip2 install PyQt5
Downloading/unpacking PyQt5
Could not find any downloads that satisfy the requirement PyQt5
Cleaning up...
No distributions at all found for PyQt5
Storing debug log for failure in /root/.pip/pip.log

[BeateBier]

you should upgrade to PyQt>=5.5

I can't. Pip can't and opensuse does not offer an update.

Pip:

pip2 install PyQt5
Downloading/unpacking PyQt5
Could not find any downloads that satisfy the requirement PyQt5
Cleaning up...
No distributions at all found for PyQt5
Storing debug log for failure in /root/.pip/pip.log

[ccordoba12]

@BeateBier, this error will be fixed in Spyder 3.1.1. Sorry for hassle.