[PyQt] Qt classes not available

[Phil Thompson]

On 16 Nov 2018, at 3:59 am, Glenn Ramsey <gr at componic.co.nz> wrote:
> 
> 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.

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

> Do I need to also build Python myself using VS2017?

Phil