[PyQt] ANN: PyQt v5.8 and SIP v4.19.1 Released

Pou Belle belepoub at gmail.com
Tue Feb 21 17:34:23 GMT 2017

Thanks Sibylle. I already had the PATH pointing to the bin directory, but
didn't work

I finally found the solution :  I had to install vcredist_2013 (Microsoft
Visual C++ 2013 Redistributable)

It's really strange, because python 3.5.2 and PyQt5.7.1 are both using
vc2015, so I assumed they would refuse to work with a vc2013 library.
Life is strange ;-)

2017-02-21 16:28 GMT+01:00 Sibylle Koczian <nulla.epistola at web.de>:

> Am 20.02.2017 um 16:00 schrieb Pou Belle:
>> />>> But that can't be right: it would mean repeating this with every
>> update of either PyQt or PostgreSQL??? />>//>>/...or Qt. This is a Qt
>> issue, nothing to do with PyQt. I assume you just
>> need to make sure the directory containing the PostgreSQL DLL is on PATH.
>> />>//
>>> Done, and now it works. Thank you!
>> Where did you find the missing dll for PostgreSQL ?
>> DependencyWalker indicates qsqlpsql.dll needs libpq.dll in order to work.
>> So I downloaded PostgreSQL binaries from the official site, and got
>> libpq.dll.
>> But it doesn't work with PyQt5.7.1/Python3.5.2/Windows7-64bit, because
>> libpq.dll was compiled against Visual Studio 2013, and Python3.5.2 needs
>> Visual Studio 2015.
> It was exactly as Phil wrote: I put the ...\bin directory of my PostgreSQL
> installation (which contains libpq.dll) into my PATH and that helped:
> connecting to a PostgreSQL database now works. I didn't compile anything,
> not PyQt, not Python, not PostgreSQL. Possibly it would suffice to copy
> libpq.dll into a subdirectory of C:\Windows which is in the PATH anyway,
> but I don't know if that's a good idea. I know that early Firebird versions
> did copy a client dll into C:\Windows or C:\WINNT\system32.
> Sibylle
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