Doesn't work - but I think I've figured out how to fix it.

[stcmeh]

Hi there.

I've recently upgraded to Spyder 4 and this cookie cutter doesn't work. I've figured out what to change to fix it. I've started a new plugin and I'll make notes below on the changes required to make the plugin work in both Spyder 3 and Spyder 4.

• Line 26 - QObject.init(self, parent) - QObject isn't imported so this fails. Also, the next line is SpyderPluginWidget.init(self, parent). Won't this inherit the QObject constructor? I commented this line out.

• I then add the following two lines:

        self.main = parent # Spyder3
        self.spyder_version=3

• I found initialize_plugin fails in spyder 4 so I modify the code thus:

        # Initialize plugin
        try:
            self.initialize_plugin()
        except:
            self.spyder_version=4

• There's a line that goes "layout.addWidget(self.widget)" but self.widget is undefined. So I modify the setup to create the widget:

        self.widget = [ADD_ON_NAME_GOES_HERE]Widget(self.main)
        layout = QVBoxLayout()
        layout.addWidget(self.widget)
        self.setLayout(layout)

• The location of the tabify function changes depending on the version of spyder so I changed the on_first_registration function to:

    def on_first_registration(self):
        """Action to be performed on first plugin registration."""
        # Define where the plugin is going to be tabified next to
        # As default, it will be tabbed next to the ipython console
        if self.spyder_version==3:
            self.main.tabify_plugins(self.main.help, self)
        else:
            self.tabify(self.main.help)    

• Likewise the add_dock_widget function has moved in Spyder 4 - so I change the register_plugin function to:

    def register_plugin(self):
        """Register plugin in Spyder's main window."""
        if self.spyder_version==3:
            self.main.add_dockwidget(self)
        else:
            self.add_dockwidget()

After that it seems to work.

Now, I'll admit that detecting the Spyder version on the basis of whether or not the initialize_plugin call works is pretty lame - so please let me know if there's a better way.

Making Spyder Plugins is a really cool way to extend the power of a great tool. Thanks for developing this system!

Simon