[PyQt] Qt classes not available

Discussion:

Glenn Ramsey

2018-11-16 03:59:01 UTC

Hi,

I have built PyQt5 (PyQt5_commercial-5.12.dev1810261601 or
PyQt5_commercial-5.11.3) against a development version of Qt 5.12 from git and
Python 2.7.15 on Windows10 using VS2017. I've tried sip 4.19.13 and
sip-4.19.14.dev1810291324. Building and installing appears to have completed
without errors.

PyQt doesn't seem to be wrapping the Qt objects as they do not appear to be
available in the PyQt5 namespace as shown in the following output:

Python 2.7.15 (v2.7.15:ca079a3ea3, Apr 30 2018, 16:30:26) [MSC v.1500 64 bit
(AMD64)] on win32
Type "copyright", "credits" or "license()" for more information.

import PyQt5
from PyQt5.QtCore import QTimer

Traceback (most recent call last):
File "<pyshell#1>", line 1, in <module>
from PyQt5.QtCore import QTimer
ImportError: No module named sip

import sip
from PyQt5.QtCore import QTimer

Traceback (most recent call last):
File "<pyshell#3>", line 1, in <module>
from PyQt5.QtCore import QTimer
ImportError: cannot import name QTimer

dir(PyQt5.QtCore)

['QT_TRANSLATE_NOOP', 'QT_TR_NOOP', 'QT_TR_NOOP_UTF8', 'Q_ARG', 'Q_CLASSINFO',
'Q_ENUM', 'Q_ENUMS', 'Q_FLAG', 'Q_FLAGS', 'Q_RETURN_ARG', '__doc__', '__name__',
'__package__', 'bin_', 'bom', 'center', 'dec', 'endl', 'fixed', 'flush',
'forcepoint', 'forcesign', 'hex_', 'left', 'lowercasebase', 'lowercasedigits',
'noforcepoint', 'noforcesign', 'noshowbase', 'oct_', 'pyqtPickleProtocol',
'pyqtRemoveInputHook', 'pyqtRestoreInputHook', 'pyqtSetPickleProtocol',
'pyqtSlot', 'qAbs', 'qAddPostRoutine', 'qAddPreRoutine', 'qChecksum',
'qCompress', 'qCritical', 'qDebug', 'qEnvironmentVariable', 'qErrnoWarning',
'qFatal', 'qFloatDistance', 'qFormatLogMessage', 'qFuzzyCompare', 'qInf',
'qInfo', 'qInstallMessageHandler', 'qIsFinite', 'qIsInf', 'qIsNaN', 'qIsNull',
'qQNaN', 'qRegisterResourceData', 'qRemovePostRoutine', 'qRound', 'qRound64',
'qSNaN', 'qSetFieldWidth', 'qSetMessagePattern', 'qSetPadChar',
'qSetRealNumberPrecision', 'qSharedBuild', 'qUncompress',
'qUnregisterResourceData', 'qVersion', 'qWarning', 'qrand', 'qsrand', 'reset',
'right', 'scientific', 'showbase', 'uppercasebase', 'uppercasedigits', 'ws']
Any ideas why this might be? I've been following this build process for years
and never had an issue like this before.

Do I need to also build Python myself using VS2017?

Glenn
_______________________________________________
PyQt mailing list ***@riverbankcomputing.com
https://www.riverban

Barry

2018-11-16 15:38:41 UTC

Permalink

FYI: See https://wiki.python.org/moin/WindowsCompilers for the compiler version to use with 2.7 on windows. VS2017 is too new. Microsoft provides visual studio for python 2.7 because of the compatibility issues if you newer compilers.

Barry

Post by Glenn Ramsey
PyQt doesn't seem to be wrapping the Qt objects as they do not appear to be
Python 2.7.15 (v2.7.15:ca079a3ea3, Apr 30 2018, 16:30:26) [MSC v.1500 64 bit
(AMD64)] on win32
Type "copyright", "credits" or "license()" for more information.

import PyQt5
from PyQt5.QtCore import QTimer

File "<pyshell#1>", line 1, in <module>
from PyQt5.QtCore import QTimer
ImportError: No module named sip

import sip
from PyQt5.QtCore import QTimer

File "<pyshell#3>", line 1, in <module>
from PyQt5.QtCore import QTimer
ImportError: cannot import name QTimer

dir(PyQt5.QtCore)

['QT_TRANSLATE_NOOP', 'QT_TR_NOOP', 'QT_TR_NOOP_UTF8', 'Q_ARG', 'Q_CLASSINFO',
'Q_ENUM', 'Q_ENUMS', 'Q_FLAG', 'Q_FLAGS', 'Q_RETURN_ARG', '__doc__', '__name__',
'__package__', 'bin_', 'bom', 'center', 'dec', 'endl', 'fixed', 'flush',
'forcepoint', 'forcesign', 'hex_', 'left', 'lowercasebase', 'lowercasedigits',
'noforcepoint', 'noforcesign', 'noshowbase', 'oct_', 'pyqtPickleProtocol',
'pyqtRemoveInputHook', 'pyqtRestoreInputHook', 'pyqtSetPickleProtocol',
'pyqtSlot', 'qAbs', 'qAddPostRoutine', 'qAddPreRoutine', 'qChecksum',
'qCompress', 'qCritical', 'qDebug', 'qEnvironmentVariable', 'qErrnoWarning',
'qFatal', 'qFloatDistance', 'qFormatLogMessage', 'qFuzzyCompare', 'qInf',
'qInfo', 'qInstallMessageHandler', 'qIsFinite', 'qIsInf', 'qIsNaN', 'qIsNull',
'qQNaN', 'qRegisterResourceData', 'qRemovePostRoutine', 'qRound', 'qRound64',
'qSNaN', 'qSetFieldWidth', 'qSetMessagePattern', 'qSetPadChar',
'qSetRealNumberPrecision', 'qSharedBuild', 'qUncompress',
'qUnregisterResourceData', 'qVersion', 'qWarning', 'qrand', 'qsrand', 'reset',
'right', 'scientific', 'showbase', 'uppercasebase', 'uppercasedigits', 'ws']
Any ideas why this might be? I've been following this build process for years
and never had an issue like this before.
Do I need to also build Python myself using VS2017?
Glenn
_______________________________________________
https://www.riverbankcomputing.com/mailman/listinfo/pyqt

Phil Thompson

2018-11-16 16:56:46 UTC

Permalink

Post by Glenn Ramsey
Hi,
I have built PyQt5 (PyQt5_commercial-5.12.dev1810261601 or
PyQt5_commercial-5.11.3) against a development version of Qt 5.12 from git and
Python 2.7.15 on Windows10 using VS2017. I've tried sip 4.19.13 and
sip-4.19.14.dev1810291324. Building and installing appears to have completed
without errors.
PyQt doesn't seem to be wrapping the Qt objects as they do not appear to be
Python 2.7.15 (v2.7.15:ca079a3ea3, Apr 30 2018, 16:30:26) [MSC v.1500 64 bit
(AMD64)] on win32
Type "copyright", "credits" or "license()" for more information.

import PyQt5
from PyQt5.QtCore import QTimer

File "<pyshell#1>", line 1, in <module>
from PyQt5.QtCore import QTimer
ImportError: No module named sip

import sip
from PyQt5.QtCore import QTimer

File "<pyshell#3>", line 1, in <module>
from PyQt5.QtCore import QTimer
ImportError: cannot import name QTimer

dir(PyQt5.QtCore)

Then you probably need to update your build process...

https://pyqt.readthedocs.io/en/latest/installation.html#downloading-sip
http://pyqt.sourceforge.net/Docs/sip4/using.html#ref-private-sip

Post by Glenn Ramsey
Do I need to also build Python myself using VS2017?

Phil
_______________________________________________
PyQt mailing list ***@riverbankcomputing.com
https://w

Glenn Ramsey

2018-11-19 20:37:04 UTC

Permalink

Hi Phil,

Post by Phil Thompson

Post by Glenn Ramsey
Hi,
I have built PyQt5 (PyQt5_commercial-5.12.dev1810261601 or
PyQt5_commercial-5.11.3) against a development version of Qt 5.12 from git and
Python 2.7.15 on Windows10 using VS2017. I've tried sip 4.19.13 and
sip-4.19.14.dev1810291324. Building and installing appears to have completed
without errors.
PyQt doesn't seem to be wrapping the Qt objects as they do not appear to be
Any ideas why this might be? I've been following this build process for years
and never had an issue like this before.

Then you probably need to update your build process...
https://pyqt.readthedocs.io/en/latest/installation.html#downloading-sip
http://pyqt.sourceforge.net/Docs/sip4/using.html#ref-private-sip

Configuring using the necessary --sip-module parameter fixed it, thanks:

python configure.py --sip-module PyQt5.sip --no-tools

Knowing what I was looking for I was unable to find any mention of this in the
downloaded distributions for either PyQt5 or sip and would never have thought to
look on readthedocs.io.

I think it would be worth noting this in the README or NEWS files. However even
if it was there I probably wouldn't have found it, so perhaps it would be useful
to have a message appear on the console after configure.py has run to highlight
this change? E.g. " we notice you're using PyQt 5.11 but haven't used the
--sip-module flag - see <link to docs>"

Glenn
_______________________________________________
PyQt mailing list ***@riverbankcomputing.com