I know how to add a material, and texture in python. I don’t know how to link them to each other, or how to assign them to an object.
Also, how do you access or set the file that an ‘IMAGE’ Texture uses
I dont know how you can assign a texture to a material. But a material can assign to an object like this bpy.context.object[“name of object”].data.materials.append( bpy.data.materials[number or name of material])
creating new material can be done with either a bpy.data.materials.new() or bpy.ops.material.new(). You can create new textures with bpy.ops.texture.new() but it unlike the same operator for materials it does not open a new slot and insert it in there, so you will have to create your slot yourself though i am not aware how you can assigne the slot to the texture.
if you want to find out how you insert the path to the image file do a dir(bpy.context.object[name of the object].active_material.texture_slots[number of texture slot]) and it will present with all available parameters and function you then consult the api doc what each parameter is for. Bare in mind that there is a diffirent set of parameter for a diffirent type of texture, so make sure you set bpy.context.object[name of the object].active_material.texture_slots[number of texture slot].type correctly . It should be in there.