ModuleNotFoundError: No module named 'tf' in convert_tensorflow.py

[Learner00100]

changed current working directory tf.
and while running below command
python3 ./convert_tensorflow.py --net_type RFB|slim

getting this error
Traceback (most recent call last):
File "/content/Ultra-Light-Fast-Generic-Face-Detector-1MB/tf/convert_tensorflow.py", line 5, in
from tf.backend.utils import load_weight
ModuleNotFoundError: No module named 'tf'

i tried
import tensorflow as tf or changing all tf to tensorflow but getting same error no module named as ....

is convert_tensorflow.py code have any error?
import sys is thier in code, but it is not used anywhere

kindly help me to slove issue

[YilanWang]

I think maybe the code is too old, maybe you can try import tensorflow.campat.v1 as tf