Need some beginner help (Bpy 2.8)

Coding Python Support
1

I’m following an outdated guide trying to write my first plugin in blender 2.8 , I tried the following code and it doesn’t work for reasons I do not understand , can anyone shed light on how to fix it ? or at least where I can find a proper 2.8 tutorial that would tell me how to properly do the hotkeys thing?

Please help me , you are my only hope…

def Zplus(context):
    bpy.context.object.location[2] += 1 

class SwitchToCursorMove(bpy.types.Operator):
    """Test of crusor move"""
    bl_idname = "OBJECT_OT_SwitchToCursorMove"
    bl_label = "Switch"

    @classmethod
    def poll(cls, context):
        return context.active_object is not None

    def execute(self, context):
        Zplus(context)
        return {'FINISHED'}


def register():
    bpy.utils.register_class(SwitchToCursorMove)
    keymapname = 'Edit mode'
    wm = bpy.context.window_manager
    kc = wm.keyconfigs
    if keymapname in kc.addon.keymaps:
        km = kc.addon.keymaps[keymapname]
    else:
        km = kc.addon.keymaps.new(name = keymapname, space_type = 'VIEW_3D')    
        
    ki = km.keymap_items.new(SwitchToCursorMove.bl_idname, 'NUMPAD_ASTERIX', 'PRESS', ctrl = True, head = True)
    
def unregister():
    if km and ki:
        km.keymap_items.remove(ki)
    bpy.types.VIEW3D_MT_object.remove(menu_func)
    bpy.utils.unregister_module(__name__)
    bpy.utils.unregister_class(SwitchToCursorMove)

if __name__ == "__main__":
    register()
2

You should edit the post to make use of discourse’s commonmark for proper code display. As it stands now some parts are unindented and in plain-text.

Use three backticks at the top and bottom of the code:

```
code here
```
1 Like
3

I’ve added some in-line comments with the corrected parts.

import bpy

def Zplus(context):
    context.object.location[2] += 1  # < you're already passing 'context' to this function, so it don't need bpy.context


# OBJECT_OT_switch_to_cursor_move should be the
# class name, but blender doesn't care either way.
class SwitchToCursorMove(bpy.types.Operator):
    """Test of crusor move"""
    
    bl_idname = "object.switch_to_cursor_move"  # < needs to be something.something
    bl_label = "Switch"

    @classmethod
    def poll(cls, context):
        # 'is not None' is redundant for poll.
       # it automatically evaluates to True if it isn't None (False)
        return context.active_object

    def execute(self, context):
        Zplus(context)
        return {'FINISHED'}

# add keys to this list. this helps blender keep track 
# of them until the addon at some point is unregistered.
addon_keymaps = []

def register():
    bpy.utils.register_class(SwitchToCursorMove)
    keymapname = 'Mesh'  # for edit-mode use 'Mesh'
    wm = bpy.context.window_manager
    kc = wm.keyconfigs
    km = kc.addon.keymaps.get(keymapname)  # < simpler to assign like this since km functions like dictionaries.
    if not km:
        km = kc.addon.keymaps.new(name=keymapname, space_type='VIEW_3D')    
        
    # keymap items are by convention shortened to kmi
    kmi = km.keymap_items.new(SwitchToCursorMove.bl_idname, 'NUMPAD_ASTERIX', 'PRESS', ctrl = True, head = True)

    addon_keymaps.append((km, kmi))  # < km, kmi are added as a tuple of two to the list. note the double parentheses.
    
def unregister():
    bpy.types.VIEW3D_MT_object.remove(menu_func)
    bpy.utils.unregister_module(__name__)
    bpy.utils.unregister_class(SwitchToCursorMove)

    #  now we can conveniently use a single for loop to access them both.
    for km, kmi in addon_keymaps:
        km.remove(kmi)
    addon_keymaps.clear()

if __name__ == "__main__":
    register()
2 Likes
4

Thank you so much