Question

我在Manjaro上使用vs代码ann在这个问题中得到了很多解释，“ VS- CODE errors on manjaro, auto quit, can't open folder

之后

我有以下代码

import cv2
from random import randrange
#load data
trained_face_data = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')

#Choose image
webcam = cv2.VideoCapture(0)

while True:
    successful_frame_read, frame = webcam.read()

    #convert to greyscale
    greyscaled_img = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)


    #detect faces
    face_coordinates = trained_face_data.detectMultiScale(greyscaled_img)

    #Draw a rectangle around the Face
    for (x, y, w, h) in face_coordinates:
        cv2.rectangle(frame, (x,y), (x+w, y+h), (0, 255, 0, 10)
    
    #Display the image with the faces spotted
    cv2.imshow('Face detector', frame)
    key = cv2.waitKey(1)

    #stop if Q is pressed
    if key==81 or key==113:
    break

webcam.release()
print("code completed")

在一开始，我在语法上出现错误

  File "Face_detector.py", line 24
    cv2.imshow('Face detector', frame)
    ^
SyntaxError: invalid syntax

我注释掉了这一行，但是在下一行中出现了相同的错误

  File "Face_detector.py", line 25
    key = cv2.waitKey(1)
    ^
SyntaxError: invalid syntax

所以我继续评论每一行，直到最后现在我出现了EOF错误

 File "Face_detector.py", line 33

                            ^
SyntaxError: unexpected EOF while parsing

我尝试从终端运行脚本，但仍然有完全相同的错误

Here is an image of running the uncommented code from the terminal

Here is an image of running the final commented out code from the terminal

Answer 1

您在此行缺少括号：

#Draw a rectangle around the Face
for (x, y, w, h) in face_coordinates:
    cv2.rectangle(frame, (x,y), (x+w, y+h), (0, 255, 0, 10) # <-- Missing parentheses here

VS代码中的EOF错误（也无法在终端中工作）

1 个答案: