Python: How to select all mesh objects that has no images assigned in their material?

Question

I wonder if there is a way in script (Python) to select all the objects that does not have any image attached to their UV?

That is: all my objects do have UVs, but only some of them have some actual images assigned to their UV. What I am asking is the way automatically selecting only those object without any image assigned to their UV, as I want to reset UV of such objects afterwards (and I do not want to reset UV for those that actually already have some image assigned to their UV, of course).

Although I am Blender Python script newbie I already know how to select all the objects with Python, I also already know how to parse thru all of them, I just do not know how to select only such ones I described above.

My Python code for selecting all the object and parsing them is this:

for ob in bpy.context.selected_objects:
    bpy.context.view_layer.objects.active = ob

I would say there will be some IF after the FOR loop but have no clue what exactly (just guess), right?

Can anyone show me the functional version of this simple code so that it would select only the objects having no image assigned to their UV, please?

Answer 1

So I finally make it on my own (I made it by combinig and editing several separate posts into one functional code)!

In this case (example) I go thru all the objects in the scene and select all those that do have uvmaps but don't have material with image (which in LEGO model are bricks that do have decorations on them, which was my aim with all of this as I need these to be unselected from the bunch).

All comment lines in the code are mine, so if it has some sort of not exact wording it is because english is not my native language, or simply my Blender/Python terminology is not right but I guess they are still descriptive enough for other newbies like me who has to endure virtual bullying from some moderators here (instead of normal factual answer like this code of mine here that actually do help!), so I hope it would help them a bit:

import bpy

# LOOP THRU ALL OBJECTS IN THE SCENE
for ob in bpy.context.scene.objects:
    
    # IF THIS OBJECT IS A MESH (THAT IS: NO LIGHT, NO CAMERA...)
    if ob.type=='MESH':
    
        # IF THIS OBJECT HAS UVMAP
        if ob.data.uv_layers:
        
            # IF THIS OBJECT HAS ANY MATERIAL
            if ob.active_material:
        
                # LOOP THRU ALL ITS MATERIALS
                for n in ob.active_material.node_tree.nodes:
            
                    # IF THIS MATERIAL CONTAINS IMAGE
                    if n.type=='TEX_IMAGE':
                
                        # DESELECT THIS OBJECT
                        ob.select_set(False)
                
                    # IF THIS MATERIAL CONTAINS NO IMAGE
                    else:
                    
                        # SELECT THIS OBJECT
                        ob.select_set(True)
                
            # IF THIS OBJECT HAS NO MATERIAL
            else:
            
                # SELECT THIS OBJECT
                ob.select_set(True)
            
        # IF THIS OBJECT DOESN'T HAVE UVMAP
        else:
                    
            # SELECT THIS OBJECT
            ob.select_set(True)
        
    # IF THIS OBJECT IS NOT MESH
    else:
                    
        # DESELECT THIS OBJECT
        ob.select_set(False)

EDIT: code slightly updated with suggestions from @lemon and @MartynasŽiemys - thank you for the help, guys!