how can I make blurring in one folder?

Question

this coding only works for one image. I want to make blurring for 1 folder but I'm not sure how. Can someone teach me.

import numpy as np
import os.path, sys

face_cascade = cv2.CascadeClassifier("haarcascade_frontalface_alt.xml")

path = r"C:\Users\Asus\Downloads\faceBlurring"
dirs = os.listdir(path)

img = cv2.imread("group.jpg") 

detections = face_cascade.detectMultiScale(img,scaleFactor=1.1,minNeighbors=6)

for face in detections:
        x,y,w,h = face

        img[y:y+h,x:x+w] = cv2.GaussianBlur(img[y:y+h,x:x+w],(15,15),cv2.BORDER_DEFAULT)
        cv2.rectangle(img,(x,y),(x+w,y+h),(255,0,0),2)

        cv2.imshow("output",img)

cv2.waitKey(0)
        
cv2.destroyAllWindows() ```