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PyQt doesn't understand &

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  • JonBJ JonB

    @user4592357

    from PyQt5.QtCore import QObject
    

    This should indeed work for you. If it does not, I do not see how you can use any PyQt stuff at all! It is not related to the menu & issue.

    I am:

    PyQt version: 5.7
    Qt version: 5.7.1
    SIP version: 4.18.1
    

    Firstly, you say you are Qt 5.10 but PyQt 4.19. Therein lies your problem, for the imports at least. You must use a PyQt version matching your Qt version, and PyQt 4.x will not work for Qt version 5.x!!

    (Gosh, I just noticed my own SIP is way behind yours. Doesn't seem to have hindered me anywhere. Does SIP version matter much?)

    Secondly, you used pip3 to install PyQt. I had nothing but grief with pip3, and never used it. If you are saying you did a pip3 install pyqt5 and ended up with PyQt version 4.x, clearly something did not work correctly... Is it possible you have an older PyQt 4 lying around on your machine?

    @SGaist
    I would not mind a comment on why --- for me at least, with correct Qt 5 / PyQt 5 --- I do not get accelerator key visual or behaviour with &... menu item?

    U Offline
    U Offline
    user4592357
    wrote on last edited by
    #12

    @JonB
    i can use everything but pylint underlines the import lines.

    and no, i installed Qt 5.10.1 then PyQt5 (using the command)

    JonBJ 1 Reply Last reply
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    • U user4592357

      @JonB
      i can use everything but pylint underlines the import lines.

      and no, i installed Qt 5.10.1 then PyQt5 (using the command)

      JonBJ Offline
      JonBJ Offline
      JonB
      wrote on last edited by JonB
      #13

      @user4592357
      So you are saying you are using PyQt 4.19.7 against Qt 5.10.0?
      Plus, you did an install of pip3 install pyqt5 and you got PyQt 4.19.7?

      If this really is the case, you should not be surprised that things don't work/appear right.

      U 1 Reply Last reply
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      • JonBJ JonB

        @user4592357
        So you are saying you are using PyQt 4.19.7 against Qt 5.10.0?
        Plus, you did an install of pip3 install pyqt5 and you got PyQt 4.19.7?

        If this really is the case, you should not be surprised that things don't work/appear right.

        U Offline
        U Offline
        user4592357
        wrote on last edited by
        #14

        @JonB
        but why would that happen? (wrong installation)

        JonBJ 1 Reply Last reply
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        • U user4592357

          @JonB
          but why would that happen? (wrong installation)

          JonBJ Offline
          JonBJ Offline
          JonB
          wrote on last edited by JonB
          #15

          @user4592357
          I don't know, 'coz like I said I never got on with pip3.

          TBH, if you're saying you code actually works, I'd be surprised if it could run against PyQt4 at all. I wonder where you think you have PyQt 4 from in the first place? In my actual code I use from PyQt5.Qt import PYQT_VERSION_STR to get it, so you know what your code is actually using. And from PyQt5.QtCore import QT_VERSION_STR for Qt version.

          U 1 Reply Last reply
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          • JonBJ JonB

            @user4592357
            I don't know, 'coz like I said I never got on with pip3.

            TBH, if you're saying you code actually works, I'd be surprised if it could run against PyQt4 at all. I wonder where you think you have PyQt 4 from in the first place? In my actual code I use from PyQt5.Qt import PYQT_VERSION_STR to get it, so you know what your code is actually using. And from PyQt5.QtCore import QT_VERSION_STR for Qt version.

            U Offline
            U Offline
            user4592357
            wrote on last edited by
            #16

            @JonB
            i can't do anything using from PyQt4...

            JonBJ 1 Reply Last reply
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            • K Offline
              K Offline
              KevinKSyd
              wrote on last edited by KevinKSyd
              #17

              Not sure if this helps and it has nothing to do with the version of PyQt but in Windows you need to use the ALT key to bring up the underline letter used with the “&” symbol.

              It’s referenced in this SO question and answer

              1 Reply Last reply
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              • U user4592357

                @JonB
                i can't do anything using from PyQt4...

                JonBJ Offline
                JonBJ Offline
                JonB
                wrote on last edited by
                #18

                @user4592357
                Look, I really don't where you are. But If you used pip3 install pyqt5 and you got PyQt4 something is really wrong. And if it did get PyQt5 but somehow your code only finds PyQt4 you are equally in a mess. So you need to sort this out before you go any further....

                1 Reply Last reply
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                • K Offline
                  K Offline
                  KevinKSyd
                  wrote on last edited by
                  #19

                  He said he was using:

                  SIP version: 5.10
                  PyQt version: 4.19.7

                  I think he just switched those two around and is confused. The most current version of SIP is 4.19.7 and the most current version of PyQt is 5.10. There never has been a version of PyQt4 with that version number nor has SIP gotten to that version number yet.

                  1 Reply Last reply
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                  • U Offline
                    U Offline
                    user4592357
                    wrote on last edited by user4592357
                    #20

                    i know it's hard to guess but it's 'she' :)

                    btw this happens on my new laptop where i only installed qt 5.10.1 and then pyqt5.
                    but the same happened also on my former laptop where i had qt4 and installed pyqt5.

                    i have no idea what's going on

                    anyways, i downloaded the sources and wannabuild. got the following:

                    $ python configure.py
                    Error: Use the --qmake argument to explicitly specify a working Qt qmake.
                    
                    python.exe .\configure.py --qmake C:\Qt\Qt5.10.1\5.10.1\msvc2015_64\bin\qmake
                    .exe
                    Querying qmake about your Qt installation...
                    Determining the details of your Qt installation...
                    Error: Failed to determine the detail of your Qt installation. Try again using
                    the --verbose flag to see more detail about the problem.
                    
                    1 Reply Last reply
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                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #21

                      What do you get if you make it verbose ?

                      By the way, you may avoid much of the hassle by using pip/pip3 do install PyQt5.

                      Interested in AI ? www.idiap.ch
                      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                      U 1 Reply Last reply
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                      • SGaistS SGaist

                        What do you get if you make it verbose ?

                        By the way, you may avoid much of the hassle by using pip/pip3 do install PyQt5.

                        U Offline
                        U Offline
                        user4592357
                        wrote on last edited by
                        #22

                        @SGaist
                        i installled using the command at first place when i got all this mess.
                        and this is --verbose

                        python.exe .\configure.py --qmake C:\Qt\Qt5.10.1\5.10.1\msvc2015_64\bin\qmake
                        .exe --verbose
                        Querying qmake about your Qt installation...
                        Determining the details of your Qt installation...
                        C:\Qt\Qt5.10.1\5.10.1\msvc2015_64\bin\qmake.exe -o cfgtest_QtCore.mk cfgtest_QtCore.pro
                        Project ERROR: Cannot run compiler 'cl'. Output:
                        ===================
                        ===================
                        Maybe you forgot to setup the environment?
                        Error: Failed to determine the detail of your Qt installation. Try again using
                        the --verbose flag to see more detail about the problem.
                        
                        1 Reply Last reply
                        0
                        • SGaistS Offline
                          SGaistS Offline
                          SGaist
                          Lifetime Qt Champion
                          wrote on last edited by
                          #23

                          From the looks of it, you're doing that from a console that's not configured to use Visual Studio 2015. You should either call the vcvars script with the correct parameters or start the console through the Visual Studio start menu.

                          Interested in AI ? www.idiap.ch
                          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                          U 1 Reply Last reply
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                          • SGaistS SGaist

                            From the looks of it, you're doing that from a console that's not configured to use Visual Studio 2015. You should either call the vcvars script with the correct parameters or start the console through the Visual Studio start menu.

                            U Offline
                            U Offline
                            user4592357
                            wrote on last edited by user4592357
                            #24

                            @SGaist
                            i opened vs native tools x64 cmd and run the install command - same output.

                            i run C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\Common7\Tools\vsdevcmd\ext\vsvars.bat from vs tools->command prompt menu, then run the install command - same output.

                            EDIT: i uninstalled current version and installed with pip install PyQt5 (and not pip3, as before) and got the lastest versions:

                            Qt version: 5.10.0
                            SIP version: 4.19.7
                            PyQt version: 5.10
                            

                            but:
                            pylint errors about imports aren't gone
                            the letter isn't still underlined. it's how @KevinKSyd said - only shows on alt key press

                            1 Reply Last reply
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                            • SGaistS Offline
                              SGaistS Offline
                              SGaist
                              Lifetime Qt Champion
                              wrote on last edited by
                              #25

                              Pylint might not find everything and you may have to help it searching for your dependencies.

                              As for the underline, it’s a Windows behavior.

                              Interested in AI ? www.idiap.ch
                              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                              1 Reply Last reply
                              0
                              • R Offline
                                R Offline
                                Rodrigo B.
                                wrote on last edited by
                                #26

                                I thought "&" was not working in my PyQt Windows project menus, but it turned out that the underscore only appears when Alt is being pressed.

                                SGaistS 1 Reply Last reply
                                0
                                • R Rodrigo B.

                                  I thought "&" was not working in my PyQt Windows project menus, but it turned out that the underscore only appears when Alt is being pressed.

                                  SGaistS Offline
                                  SGaistS Offline
                                  SGaist
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #27

                                  @Rodrigo-B hi and welcome to devnet,

                                  As already written, the accelerators are not permanently shown on Windows.

                                  Interested in AI ? www.idiap.ch
                                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                  1 Reply Last reply
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                                  • SGaistS SGaist

                                    Hi,

                                    No it's not, the underline represent the accelerator you set by using the & sign in your action name.

                                    L Offline
                                    L Offline
                                    lang2524
                                    Banned
                                    wrote on last edited by
                                    #28
                                    This post is deleted!
                                    1 Reply Last reply
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