Face.py

import cv2

cap = cv2.VideoCapture(0)

face_cascade = cv2.CascadeClassifier(
    cv2.data.haarcascades + "haarcascade_frontalface_default.xml")
body_cascade = cv2.CascadeClassifier(
    cv2.data.haarcascades + "haarcascade_fullbody.xml")

while True:
    _, frame = cap.read()

    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
    faces = face_cascade.detectMultiScale(gray, 1.3, 5)

    for (x, y, width, height) in faces:
       cv2.rectangle(frame, (x, y), (x + width, y + height), (255, 0, 0), 3)

    cv2.imshow("Camera", frame)

    if cv2.waitKey(1) == ord('q'):
        break

cap.release()
cv2.destroyAllWindows()