import error PyQt5.QtWidgets, 32bit Python question

Phil Thompson phil at
Thu Nov 19 08:37:49 GMT 2020

On 18/11/2020 19:55, Elizabeth Johnson wrote:
> Hi PyQt team,
> Is this the appropriate place to ask this sort of question? If not, 
> please
> let me know, thank you!
> I'm trying to use PyQt5.QtWidgets (on a clean VM) on a 32 bit 
> installation
> of Python (I'd be happy w/ any version of Python 3). I have 
> successfully
> gotten it to work on a 64 bit installation of Python. Specifically I 
> have
> Python 3.7.4 from WinPython that came with PyQt5 5.13.0 and PyQt5-sip
> 4.19.18 and it all works (i.e. when I 'import PyQt5.QtWidgets' it 
> works).
> I've found WinPython does not come with PyQt5 for their 32bit 
> distributions
> of Python, except for this one I found with Python 3.5 from a few years
> ago: 
> Even using that WinPython installation I've run into this error:
>>>> import PyQt5.QtWidgets
> Traceback (most recent call last):
>     File "<stdin>", line 1, in <module>
> ImportError: DLL load failed: The specified procedure could not be 
> found.
> I've also tried just installing Python 3.7.4 directly and pip 
> installing
> PyQt5 (same error, no success) and then trying to specifically install 
> the
> PyQt5 version I mentioned above (still same error, no success).
> Is there a reason PyQt5 would be incompatible w/ 32bit Python? Thank 
> you!!


I've never heard of WinPython - I suggest you ask the maintainers.


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