# Aplica user 0 a todos y Fakea los que comienzan
def borrar_mat_tex_imag(lista, test=True):
    if not test:

        for mat in bpy.data.materials:
            mat.user_clear()
            for i in lista:
                if mat.name.startswith(i):
                    mat.use_fake_user = True

        for tex in bpy.data.textures:
            tex.user_clear()
            for i in lista:
                if tex.name.startswith(i):
                    tex.use_fake_user = True

        for img in bpy.data.images:
            img.user_clear()
            for i in lista:
                if img.name.startswith(i):
                    img.use_fake_user = True
    else:
        print('No hay modo no-test')

borrar_mat_tex_imag(['vega', 'env', 'video', 'osd', 'item'], True)