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How to Enable Python Type Hints in Qt Creator?

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  • cristian-adamC cristian-adam

    After re-opening the project Qt Creator asked me if I want to configure the LSP with type hints.

    qt-creator-18-pyside6-python-lsp.png

    The code completion looks different now.

    JonBJ Offline
    JonBJ Offline
    JonB
    wrote last edited by JonB
    #6

    @cristian-adam
    It looks like your latest post crossed with mine! That again is an improvement to show the parameters, good. But still no type hint (the type expected for the on parameter), is that supported? :) And I don't know whether all the Qt calls are annotated in the PySide with their types, that may require a manual step?

    cristian-adamC 1 Reply Last reply
    0
    • cristian-adamC cristian-adam

      After re-opening the project Qt Creator asked me if I want to configure the LSP with type hints.

      qt-creator-18-pyside6-python-lsp.png

      The code completion looks different now.

      cristian-adamC Offline
      cristian-adamC Offline
      cristian-adam
      wrote last edited by
      #7

      Then F2 on setAlignment jumped to a file that has some declarations:

      qt-creator-18-pyside6-symbol-jump.png

      Equivalent to jumping to a header file in C++.

      JonBJ 1 Reply Last reply
      1
      • cristian-adamC cristian-adam

        Then F2 on setAlignment jumped to a file that has some declarations:

        qt-creator-18-pyside6-symbol-jump.png

        Equivalent to jumping to a header file in C++.

        JonBJ Offline
        JonBJ Offline
        JonB
        wrote last edited by
        #8

        @cristian-adam Yep, getting better :)

        1 Reply Last reply
        1
        • cristian-adamC Offline
          cristian-adamC Offline
          cristian-adam
          wrote last edited by cristian-adam
          #9

          I've opened up QTCREATORBUG-34195: Python debugging not having pretty printers for Pyside6 Qt types.

          cristian-adamC 1 Reply Last reply
          1
          • JonBJ JonB

            @cristian-adam
            It looks like your latest post crossed with mine! That again is an improvement to show the parameters, good. But still no type hint (the type expected for the on parameter), is that supported? :) And I don't know whether all the Qt calls are annotated in the PySide with their types, that may require a manual step?

            cristian-adamC Offline
            cristian-adamC Offline
            cristian-adam
            wrote last edited by
            #10

            @JonB said in How to Enable Python Type Hints in Qt Creator?:

            @cristian-adam
            It looks like your latest post crossed with mine! That again is an improvement to show the parameters, good. But still no type hint (the type expected for the on parameter), is that supported? :) And I don't know whether all the Qt calls are annotated in the PySide with their types, that may require a manual step?

            qt-creator-18-pyside-annotation.png

            It did mention that on is a bool, was that it?

            JonBJ 1 Reply Last reply
            2
            • cristian-adamC cristian-adam

              @JonB said in How to Enable Python Type Hints in Qt Creator?:

              @cristian-adam
              It looks like your latest post crossed with mine! That again is an improvement to show the parameters, good. But still no type hint (the type expected for the on parameter), is that supported? :) And I don't know whether all the Qt calls are annotated in the PySide with their types, that may require a manual step?

              qt-creator-18-pyside-annotation.png

              It did mention that on is a bool, was that it?

              JonBJ Offline
              JonBJ Offline
              JonB
              wrote last edited by JonB
              #11

              @cristian-adam said in How to Enable Python Type Hints in Qt Creator?:

              It did mention that on is a bool, was that it?

              That is indeed the chappie :) It also shows the function call returns None, which is a type hint too.

              Python decided not to have types initially. Then someone came to their senses and said "well we don't want mandatory types, but if you are finicky enough to want to type in types as hints we will let you do that". And then presumably someone said "these are really useful when editing, so we'll introduce warnings when they're wrong and editors can show them if they help people". :)

              1 Reply Last reply
              1
              • cristian-adamC cristian-adam

                I've opened up QTCREATORBUG-34195: Python debugging not having pretty printers for Pyside6 Qt types.

                cristian-adamC Offline
                cristian-adamC Offline
                cristian-adam
                wrote last edited by
                #12

                @cristian-adam said in How to Enable Python Type Hints in Qt Creator?:

                I've opened up QTCREATORBUG-34195: Python debugging not having pretty printers for Pyside6 Qt types.

                And as workaround for the missing debugger, is the qDebug() trace:

                from PySide6.QtCore import Qt, qDebug
                
                # ...
                
                    qDebug("Label text: " + label.text())
                
                JonBJ 1 Reply Last reply
                0
                • cristian-adamC cristian-adam

                  @cristian-adam said in How to Enable Python Type Hints in Qt Creator?:

                  I've opened up QTCREATORBUG-34195: Python debugging not having pretty printers for Pyside6 Qt types.

                  And as workaround for the missing debugger, is the qDebug() trace:

                  from PySide6.QtCore import Qt, qDebug
                  
                  # ...
                  
                      qDebug("Label text: " + label.text())
                  
                  JonBJ Offline
                  JonBJ Offline
                  JonB
                  wrote last edited by JonB
                  #13

                  @cristian-adam
                  Alternatively as a workaround and still using the debugger panes rather than putting in a qDebug() statement, did you try putting label.text() into the bottom right Expressions pane?

                  cristian-adamC 1 Reply Last reply
                  0
                  • JonBJ JonB

                    @cristian-adam
                    Alternatively as a workaround and still using the debugger panes rather than putting in a qDebug() statement, did you try putting label.text() into the bottom right Expressions pane?

                    cristian-adamC Offline
                    cristian-adamC Offline
                    cristian-adam
                    wrote last edited by
                    #14

                    @JonB said in How to Enable Python Type Hints in Qt Creator?:

                    @cristian-adam
                    Alternatively as a workaround and still using the debugger panes rather than putting in a qDebug() statement, did you try putting label.text() into the bottom right Expressions pane?

                    qt-creator-18-debugger-expression.png

                    Worked. I didn't give me Hello 🐍 but Hello =\d but I guess that's due to the missing UTF-8 encoding.

                    1 Reply Last reply
                    0
                    • JonBJ Offline
                      JonBJ Offline
                      JonB
                      wrote last edited by JonB
                      #15

                      I didn't notice you were printing a duck/swan thing, wth is that? :)

                      Since (unlike C++) you can put pretty much any Python expression into Expressions, you might get it with something like label.text().encode('utf-8'), or label.text().decode('utf-8') if it's decoding rather than encoding, don't ask me about encodings!). In both PyQt and PySide all QStrings are translated into Python strs, which are those 16-bit encoding thingies.

                      Just while we are here, I would give a limb if gdb/C++ Creator debugging would allow expressions to be evaluated in the Expressions pane. I understand the issue with C++ versus Python for expression evaluation, but it's the single most irritating thing when debugging C++.... :(

                      cristian-adamC 2 Replies Last reply
                      0
                      • JonBJ JonB

                        I didn't notice you were printing a duck/swan thing, wth is that? :)

                        Since (unlike C++) you can put pretty much any Python expression into Expressions, you might get it with something like label.text().encode('utf-8'), or label.text().decode('utf-8') if it's decoding rather than encoding, don't ask me about encodings!). In both PyQt and PySide all QStrings are translated into Python strs, which are those 16-bit encoding thingies.

                        Just while we are here, I would give a limb if gdb/C++ Creator debugging would allow expressions to be evaluated in the Expressions pane. I understand the issue with C++ versus Python for expression evaluation, but it's the single most irritating thing when debugging C++.... :(

                        cristian-adamC Offline
                        cristian-adamC Offline
                        cristian-adam
                        wrote last edited by
                        #16

                        @JonB said in How to Enable Python Type Hints in Qt Creator?:

                        I didn't notice you were printing a duck/swan thing, wth is that? :)

                        🐍 https://emojipedia.org/snake

                        1 Reply Last reply
                        0
                        • JonBJ JonB

                          I didn't notice you were printing a duck/swan thing, wth is that? :)

                          Since (unlike C++) you can put pretty much any Python expression into Expressions, you might get it with something like label.text().encode('utf-8'), or label.text().decode('utf-8') if it's decoding rather than encoding, don't ask me about encodings!). In both PyQt and PySide all QStrings are translated into Python strs, which are those 16-bit encoding thingies.

                          Just while we are here, I would give a limb if gdb/C++ Creator debugging would allow expressions to be evaluated in the Expressions pane. I understand the issue with C++ versus Python for expression evaluation, but it's the single most irritating thing when debugging C++.... :(

                          cristian-adamC Offline
                          cristian-adamC Offline
                          cristian-adam
                          wrote last edited by
                          #17

                          @JonB said in How to Enable Python Type Hints in Qt Creator?:

                          Since (unlike C++) you can put pretty much any Python expression into Expressions, you might get it with something like label.text().encode('utf-8'), or label.text().decode('utf-8') if it's decoding rather than encoding, don't ask me about encodings!). In both PyQt and PySide all QStrings are translated into Python strs, which are those 16-bit encoding thingies.

                          label.text().decode('utf-8') results in <unavailable>.

                          🤷🏻‍♂️

                          JonBJ 1 Reply Last reply
                          0
                          • cristian-adamC cristian-adam

                            @JonB said in How to Enable Python Type Hints in Qt Creator?:

                            Since (unlike C++) you can put pretty much any Python expression into Expressions, you might get it with something like label.text().encode('utf-8'), or label.text().decode('utf-8') if it's decoding rather than encoding, don't ask me about encodings!). In both PyQt and PySide all QStrings are translated into Python strs, which are those 16-bit encoding thingies.

                            label.text().decode('utf-8') results in <unavailable>.

                            🤷🏻‍♂️

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

                            @cristian-adam
                            encode works on strings, str or QString. decode works on bytes, bytes or QByteArray. That may explain <unavailable> on text().decode(). I told you I didn't understand :) If you had stuck to Hello world! we wouldn't be having this discussion ;-)

                            1 Reply Last reply
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