Add operator arguments to console call

Question

I have an operator that I need to hand over arguments. I know that one possibility is to add attributes to the scene and use this but in draw-methods of operators I can modify the arguments passed to the operator directly. So I thought I should be able to do this from the console.

So far I have this operator (as an example):

from bpy.types import Operator
from bpy.props import StringProperty

class ExampleOP(Operator):
    bl_idname = "object.test"
    bl_label = "Is just an example"
    bl_options = {'REGISTER'}

    foo = StringProperty()
    result = StringProperty()

    def invoke(self, context, event):
        return context.window_manager.invoke_props_dialog(self)

    def draw(self, context):
        layout = self.layout
        col = layout.column()

        col.prop_search(self, 'result', context.object.data, 'uv_textures', text="UV Layer")

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

What I want to do is bpy.ops.object.test('INVOKE_DEFAULT', foo="something").

EDIT: It seems to me that the answer only works for *Property()-objects not any object. This gives me a

TpyeError: Convering py args to operator properties: keyword "ev" unrecognized

Note: Please do not post any answers telling me off, to do this in another way. NO, this is exactly what I need, I cannot handle the "print-statement" outwards of the operator and yes, and foo may not always be a StringProperty.

Answer 1

You already added Operator Properties to your operator, which is perfectly fine.

The missing link is how to access the operator property values, which is rather simple (remember it's a python class after all):

print(self.foo)

self refers to the operator instance, which stores the property values.

import bpy
from bpy.types import Operator
from bpy.props import StringProperty

class ExampleOP(Operator):
    bl_idname = "object.test"
    bl_label = "Is just an example"
    bl_options = {'REGISTER'}

    foo = StringProperty()
    result = StringProperty()

    def invoke(self, context, event):
        return context.window_manager.invoke_props_dialog(self)

    def draw(self, context):
        layout = self.layout
        col = layout.column()

        col.prop_search(self, 'result', context.object.data, 'uv_textures', text="UV Layer")

    def execute(self, context):
        print("foo =", self.foo)
        return {'FINISHED'}


def register():
    bpy.utils.register_module(__name__)


def unregister():
    bpy.utils.unregister_module(__name__)


if __name__ == "__main__":
    register()

    bpy.ops.object.test('INVOKE_DEFAULT', foo="bar")