Qt missing ?

Partyauzaitazunix

Hello ! I have some python homework to do on pyzo, which is using the python shell. And i've come to the point where i need to graph a fuction, so i use ' matplotlib.pyplot.show ' but pyzo go nuts and crashes, displaying " This application failed to start because it could not find or load the Qt platform plugin "windows"
in "C:\Program Files (x86)\pyzo".

Reinstalling the application may fix this problem."
I've already tried to search on google how to solve this issue, and it may have to do with the environement variables or something, i have no clue. I very much hope someone can help me because i need that graph >:(

mrjj

Hi
It just sounds like pyzo installer didnt include any Qt dlls.
Normally the program folder should have a certain structure with the needed dlls
like shown here
http://www.tripleboot.org/?p=138

Also, do it comes with Qt bindings as default ?

Partyauzaitazunix

Well, i've search the folders a bit and there is a Qt folder, i've posted what it contains. But about default Qt bindings, i'm not sure of what you are talking about, but i didn't change anything during the installation sooo.

mrjj

Hi
It does look like Qt was included.
By bindings i mean python code that allows pyzo to call Qt functions in Qt dlls.
Sadly i have no idea how pyzo work,/ what it is.
Seems to be an editor / IDE ?

Maybe Mr @JonB knows more about it. Im on c++.

JonB

@Partyauzaitazunix
https://pyzo.org/ in itself is a Python development IDE. It is not for Qt development per se, which is what this forum is about. I don't see any evidence that you are intending to do any Qt programming?

In which case, I can only hazard a guess that pyzo itself uses Qt to provide its IDE? And the error is to do with you not having pyzo correctly installed and it is complaining about its own missing Qt libraries? OIC: matplotlib.pyplot.show. I guess that addin(?) requires Qt for the plotting?? I think you do need to Google to find out how that is supposed to work, we'll need to know "it may have to do with the environement variables or something". I don't think anyone here will know how to do it for you, it's down to this pyzo and matplotlib.pyplot.

Partyauzaitazunix

Hi, thanks for the answers. But i don't think it all as to do with pyzo, because i know it also uses anaconda3 (It required me to install it), and i've search, he doesn't have a Qt ddls folder, plus when i lunch spyder, (a program just like pyzo but my school don't like it), well he give me the old 'This application failed to start because it could not find or load the Qt platform plugin "windows"
in "" .' Which is odd to me, now my gesses is that anaconda misses the Qt ddls.

JonB

@Partyauzaitazunix
Yes, it appears that anaconda uses Qt. It apparently comes with PyQt4, and presumably(?) that with whatever it needs from Qt itself.

So it sounds like your installation/environment is not set up correctly? When you wrote:

I've already tried to search on google how to solve this issue, and it may have to do with the environement variables or something, i have no clue.

I don't think you can afford to ignore that. If environment variables have to be set for anaconda to find Qt libraries correctly, you need to address that properly?

Partyauzaitazunix

I don't know why it work this time, but i tried once more to uninstall and reinstall, and it seems to work just fine ... Weired, but i gess you can close the subject now, thanks for all answears