os.walk() ignore few directories and subdirectories under them - python-3.x

Question

I have a a top level directory and then few subdirectories underneath it which in turn have few subdirectories and files.
the tree view looks like this:-
treeview
├── abc
│ ├── pqr
│ │ ├── 1
│ │ ├── 2
│ │ └── 3
│ └── sty
└── xyz
Now I want my script to ignore walking into "abc" and "1"(this is a directory and not a file).
I have come up with the below script:-
import os
import shutil
files_to_keep = []
files_grandlist = []
dirs_to_keep = []
dirs_grandlist = []
rootpath="./treeview"
exclude = ['./treeview/abc', './treeview/abc/pqr/1']
exclude_temp = set(['abc','1'])
for path in exclude:
for root, dirs, files in os.walk(path):
dirs[:] = [d for d in dirs if d not in exclude_temp]
dirs_to_keep.append(root)
print("================dirs to keep======")
for i in dirs_to_keep:
print(i)
for root, dirs, files in os.walk(rootpath):
dirs_grandlist.append(root)
print("===============grandlist==========")
for i in dirs_grandlist:
print(i)
print("filter============================")
for i in list(set(dirs_grandlist)^set(dirs_to_keep)):
print(i)
This gives me output like below when run:
================dirs to keep======
./treeview/abc
./treeview/abc/pqr
./treeview/abc/pqr/2
./treeview/abc/pqr/3
./treeview/abc/sty
./treeview/abc/pqr/1
===============grandlist==========
./treeview
./treeview/abc
./treeview/abc/pqr
./treeview/abc/pqr/1
./treeview/abc/pqr/2
./treeview/abc/pqr/3
./treeview/abc/sty
./treeview/xyz
filter============================
./treeview
./treeview/xyz
The idea is to capture a list of directories/subdirectories under treeview top level directory and then capture the same information for a list of excluded directories.
the output under "filter============================" line should give me a list of directories which I want to remove from the filesystem.
Appreciate any help here.