Re: [PyQt] Python 3 import error
I just wanted to say that the amount of knowledgeable, fast help I received here yesterday was incredible. In this thread I experienced about six or so different problems porting a script to Python 3 and each one of that was immediately solved showing immense knowledge not just about PyQt itself but also about other Python related technologies. Thanks, guys. Thorsten ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] Python 3 import error
Hi, I'm trying to port a PyQt4 application from Python 2 to Python 3. The application works fine with the latest Python 2 (2.7.1) but not with Python 3.1.2: Traceback (most recent call last): File my_application.pyw, line 10, in module import resource.ui File F:\[path]\resource\ui.py, line 84, in module import resource_rc ImportError: No module named resource_rc This is the directory structure: |-- my_application.pyw* (main application, import resource.ui) `-- resource/ |-- __init__.py (package file to enable module import) |-- resource_rc.py (generated by pyrcc4) `-- ui.py(generated by pyuic4, import resource_rc) I couldn't find any documentation regarding changes between the latest Python 2 and 3. Who knows what's going on and what I can do?! Thorsten ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Python 3 import error
On Thu, 2 Dec 2010 12:24:54 +0100, Thorsten Kampe thors...@thorstenkampe.de wrote: Hi, I'm trying to port a PyQt4 application from Python 2 to Python 3. The application works fine with the latest Python 2 (2.7.1) but not with Python 3.1.2: Traceback (most recent call last): File my_application.pyw, line 10, in module import resource.ui File F:\[path]\resource\ui.py, line 84, in module import resource_rc ImportError: No module named resource_rc This is the directory structure: |-- my_application.pyw* (main application, import resource.ui) `-- resource/ |-- __init__.py (package file to enable module import) |-- resource_rc.py (generated by pyrcc4) `-- ui.py(generated by pyuic4, import resource_rc) I couldn't find any documentation regarding changes between the latest Python 2 and 3. Who knows what's going on and what I can do?! Make sure you regenerate resource_rc.py with the -py3 argument to pyrcc4. Phil ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Python 3 import error
* Phil Thompson (Thu, 02 Dec 2010 11:31:13 +) On Thu, 2 Dec 2010 12:24:54 +0100, Thorsten Kampe thors...@thorstenkampe.de wrote: I'm trying to port a PyQt4 application from Python 2 to Python 3. The application works fine with the latest Python 2 (2.7.1) but not with Python 3.1.2: Traceback (most recent call last): File my_application.pyw, line 10, in module import resource.ui File F:\[path]\resource\ui.py, line 84, in module import resource_rc ImportError: No module named resource_rc This is the directory structure: |-- my_application.pyw* (main application, import resource.ui) `-- resource/ |-- __init__.py (package file to enable module import) |-- resource_rc.py (generated by pyrcc4) `-- ui.py(generated by pyuic4, import resource_rc) I couldn't find any documentation regarding changes between the latest Python 2 and 3. Who knows what's going on and what I can do?! Make sure you regenerate resource_rc.py with the -py3 argument to pyrcc4. Okay, I did this now but the error remained the same. Thorsten ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Python 3 import error
On Thursday 02 December 2010, 12:24:54 Thorsten Kampe wrote: Hi, I'm trying to port a PyQt4 application from Python 2 to Python 3. The application works fine with the latest Python 2 (2.7.1) but not with Python 3.1.2: Traceback (most recent call last): File my_application.pyw, line 10, in module import resource.ui File F:\[path]\resource\ui.py, line 84, in module import resource_rc ImportError: No module named resource_rc This is the directory structure: |-- my_application.pyw* (main application, import resource.ui) `-- resource/ |-- __init__.py (package file to enable module import) |-- resource_rc.py (generated by pyrcc4) `-- ui.py(generated by pyuic4, import resource_rc) I couldn't find any documentation regarding changes between the latest Python 2 and 3. Who knows what's going on and what I can do?! Did you recreated the resources with pyrcc4 -py3? It might be necessary to supply a --from-imports argument to pyuic4, as python3 did changed its import behavior (relative imports, etc..). Pete ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Python 3 import error
* Hans-Peter Jansen (Thu, 2 Dec 2010 12:49:17 +0100)
On Thursday 02 December 2010, 12:24:54 Thorsten Kampe wrote:
I'm trying to port a PyQt4 application from Python 2 to Python 3.
The application works fine with the latest Python 2 (2.7.1) but not
with Python 3.1.2:
Traceback (most recent call last):
File my_application.pyw, line 10, in module
import resource.ui
File F:\[path]\resource\ui.py, line 84, in module
import resource_rc
ImportError: No module named resource_rc
This is the directory structure:
|-- my_application.pyw* (main application, import resource.ui)
`-- resource/
|-- __init__.py (package file to enable module import)
|-- resource_rc.py (generated by pyrcc4)
`-- ui.py(generated by pyuic4, import resource_rc)
I couldn't find any documentation regarding changes between the
latest Python 2 and 3. Who knows what's going on and what I can do?!
Did you recreated the resources with pyrcc4 -py3? It might be necessary
to supply a --from-imports argument to pyuic4, as python3 did changed
its import behavior (relative imports, etc..).
Okay, this is what I get after adding --from-imports:
Traceback (most recent call last):
File my_application.pyw, line 10, in module
import resource.ui
File F:\[path]\resource\ui.py, line 89, in module
from . import resource_rc
File F:\[path]\resource\resource_rc.py, line 70627,
in module
qInitResources()
File F:\[path]\resource\resource_rc.py, line 70622,
in qInitResources
QtCore.qRegisterResourceData(0x01, qt_resource_struct,
qt_resource_name, qt_resource_data)
TypeError: qRegisterResourceData(int, str, str, str): argument 2 has
unexpected type 'str'
So the ImportError is gone. Adding -py3 to pyrcc4 yields:
Traceback (most recent call last):
File my_application.pyw, line 63, in module
mainWin = MainWindow()
File my_application.pyw, line 19, in __init__
self.restoreGeometry(settings.value('Geometry').toByteArray())
AttributeError: 'QByteArray' object has no attribute 'toByteArray'
So the error is now in the main file. The actual line is
self.restoreGeometry(settings.value('Geometry').toByteArray())
(...taken from Mark Summerfield's book Rapid GUI Programming with
Python and Qt: The Definitive Guide to PyQt Programming).
Interestingly the same UI and resource file still run fine in Python 2
:-/
Thorsten
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Re: [PyQt] Python 3 import error
On Thu, 2 Dec 2010 13:17:22 +0100, Thorsten Kampe
thors...@thorstenkampe.de wrote:
* Hans-Peter Jansen (Thu, 2 Dec 2010 12:49:17 +0100)
On Thursday 02 December 2010, 12:24:54 Thorsten Kampe wrote:
I'm trying to port a PyQt4 application from Python 2 to Python 3.
The application works fine with the latest Python 2 (2.7.1) but not
with Python 3.1.2:
Traceback (most recent call last):
File my_application.pyw, line 10, in module
import resource.ui
File F:\[path]\resource\ui.py, line 84, in module
import resource_rc
ImportError: No module named resource_rc
This is the directory structure:
|-- my_application.pyw* (main application, import resource.ui)
`-- resource/
|-- __init__.py (package file to enable module import)
|-- resource_rc.py (generated by pyrcc4)
`-- ui.py(generated by pyuic4, import resource_rc)
I couldn't find any documentation regarding changes between the
latest Python 2 and 3. Who knows what's going on and what I can do?!
Did you recreated the resources with pyrcc4 -py3? It might be necessary
to supply a --from-imports argument to pyuic4, as python3 did changed
its import behavior (relative imports, etc..).
Okay, this is what I get after adding --from-imports:
Traceback (most recent call last):
File my_application.pyw, line 10, in module
import resource.ui
File F:\[path]\resource\ui.py, line 89, in module
from . import resource_rc
File F:\[path]\resource\resource_rc.py, line 70627,
in module
qInitResources()
File F:\[path]\resource\resource_rc.py, line 70622,
in qInitResources
QtCore.qRegisterResourceData(0x01, qt_resource_struct,
qt_resource_name, qt_resource_data)
TypeError: qRegisterResourceData(int, str, str, str): argument 2 has
unexpected type 'str'
So the ImportError is gone. Adding -py3 to pyrcc4 yields:
Traceback (most recent call last):
File my_application.pyw, line 63, in module
mainWin = MainWindow()
File my_application.pyw, line 19, in __init__
self.restoreGeometry(settings.value('Geometry').toByteArray())
AttributeError: 'QByteArray' object has no attribute 'toByteArray'
So the error is now in the main file. The actual line is
self.restoreGeometry(settings.value('Geometry').toByteArray())
...because the QVariant v2 API is the default with Python v3 so it has
already converted the QVariant to a QByteArray for you.
(...taken from Mark Summerfield's book Rapid GUI Programming with
Python and Qt: The Definitive Guide to PyQt Programming).
Interestingly the same UI and resource file still run fine in Python 2
:-/
.ui files are identical for all versions of Python.
-py3 resource files will work with Python v2.6 and later.
Phil
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Re: [PyQt] Python 3 import error
* Phil Thompson (Thu, 02 Dec 2010 12:39:58 +)
On Thu, 2 Dec 2010 13:17:22 +0100, Thorsten Kampe
thors...@thorstenkampe.de wrote:
So the ImportError is gone. Adding -py3 to pyrcc4 yields:
Traceback (most recent call last):
File my_application.pyw, line 63, in module
mainWin = MainWindow()
File my_application.pyw, line 19, in __init__
self.restoreGeometry(settings.value('Geometry').toByteArray())
AttributeError: 'QByteArray' object has no attribute 'toByteArray'
So the error is now in the main file. The actual line is
self.restoreGeometry(settings.value('Geometry').toByteArray())
...because the QVariant v2 API is the default with Python v3 so it has
already converted the QVariant to a QByteArray for you.
Okay, if I omit the .toByteArray(), then the application starts with
Python 3 - but it doesn't work with Python 2 anymore:
self.restoreGeometry(settings.value('Geometry'))
TypeError: QWidget.restoreGeometry(QByteArray): argument 1 has
unexpected type 'QVariant'
Is there a way around that or do I simply have to query the Python
version inside the script? Or put in a try without toByteArray() if
exception, try with toByteArray()?!
The - hopefully - last problem with the porting to Python 3:
Everything seems to work fine, except closing the application through
the menu or toolbar (Alt+F4 works fine):
Traceback (most recent call last):
File my_application-new.pyw, line 32, in on_actionE_xit_triggered
settings.setValue('Geometry', QtCore.QVariant(self.saveGeometry()))
TypeError: PyQt4.QtCore.QVariant represents a mapped type and cannot be
instantiated
this refers to
def on_actionE_xit_triggered(self):
settings = QtCore.QSettings()
settings.setValue('Geometry', QtCore.QVariant(self.saveGeometry()))
self.close()
...in the code.
Thorsten
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Re: [PyQt] Python 3 import error
On Thursday 02 December 2010, 18:31:04 Thorsten Kampe wrote:
* Hans-Peter Jansen (Thu, 2 Dec 2010 15:47:28 +0100)
On Thursday 02 December 2010, 14:25:21 Thorsten Kampe wrote:
Okay, if I omit the .toByteArray(), then the application starts
with Python 3 - but it doesn't work with Python 2 anymore:
self.restoreGeometry(settings.value('Geometry'))
TypeError: QWidget.restoreGeometry(QByteArray): argument 1 has
unexpected type 'QVariant'
Is there a way around that or do I simply have to query the
Python version inside the script? Or put in a try without
toByteArray() if exception, try with toByteArray()?!
Add this before your _first_ PyQt4 import:
# This is only needed for Python v2 but is harmless for Python v3.
import sip
sip.setapi('QVariant', 2)
That works great, thanks.
The - hopefully - last problem with the porting to Python 3:
Everything seems to work fine, except closing the application
through the menu or toolbar (Alt+F4 works fine):
Traceback (most recent call last):
File my_application-new.pyw, line 32, in
on_actionE_xit_triggered settings.setValue('Geometry',
QtCore.QVariant(self.saveGeometry())) TypeError:
PyQt4.QtCore.QVariant represents a mapped type and cannot be
instantiated
this refers to
def on_actionE_xit_triggered(self):
settings = QtCore.QSettings()
settings.setValue('Geometry',
QtCore.QVariant(self.saveGeometry())) self.close()
Please read my answer in this thread: Sip usage problem.
I did that, but I don't fully understand - especially in regard to a
solution. How do I have to modify
settings.setValue('Geometry', QtCore.QVariant(self.saveGeometry()))
...so it doesn't throw the error anymore?
Omitting it should be sufficient:
settings.setValue('Geometry', self.saveGeometry())
Pete
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Re: [PyQt] Python 3 import error
* Hans-Peter Jansen (Thu, 2 Dec 2010 20:16:13 +0100)
sip.setapi('QVariant', 2)
Unfortunately, when I set sip.setapi('QVariant', 2) then I can't run
the application as stand-alone Pyinstaller[1] executable (neither under
Windows nor Linux):
ValueError: API 'QVariant' has already been set to version 1
Okay, this is not a PyQt issue but a Pyinstaller one (I think). But
maybe you have a solution for that?
Thorsten
[1] http://www.pyinstaller.org/
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Re: [PyQt] Python 3 import error
On 12/2/2010 5:11 PM, Thorsten Kampe wrote:
* Hans-Peter Jansen (Thu, 2 Dec 2010 20:16:13 +0100)
sip.setapi('QVariant', 2)
Unfortunately, when I set sip.setapi('QVariant', 2) then I can't run
the application as stand-alone Pyinstaller[1] executable (neither under
Windows nor Linux):
ValueError: API 'QVariant' has already been set to version 1
PyInstaller somehow ends up importing PyQt before your code runs, so the
API version is implicitly set to 1. You can work around this by editing
support/rthooks/pyi_rth_qt4plugins.py and adding these lines before the
import of QtCore:
import sip
sip.setapi('QVariant', 2)
--
. . . . . . . . . . . . . . . . . . . . . . . . .
Nathan Weston nat...@genarts.com
GenArts, Inc. Tel: 617-492-2888
955 Mass. Ave Fax: 617-492-2852
Cambridge, MA 02139 USA www.genarts.com
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