我该如何解决“导入 cv2，导入错误:DLL 加载失败"?在 VsCode 上的 Python 3.7 和 OpenCV 4.1.1 中?

我有一个脚本，可以使用笔记本电脑的网络摄像头检测人脸.一开始，我使用带有 Anaconda 包的 Spyder，它没有为 OpenCV 抛出任何 ImportError，一切都很好.然后我想改变 IDE，因为我只想改变并开始使用 VsCode 但独立于 Anaconda.在对我的代码进行一些改进后，它开始为 OpenCV 抛出这个 ImportError，如下所示:

I have a script which detects a face with the webcam of my laptop. In the beginning, I was using Spyder coming with an Anaconda package and it wasn't throwing any ImportError for OpenCV and everything was perfectly fine. Then I wanted to change IDE as I only wanted a change and started using VsCode but as independent of Anaconda. After some improvements in my code it started to throw this ImportError for OpenCV as shown below:

    File "C:/Users/User/Desktop/SeniorProject/EE 492/lbp/FaceDetection.py", line 7, in <module>
    import cv2

    ImportError: DLL load failed: Belirtilen modül bulunamadı.

Belirtilen modül bulunamadı. 最后一行是我的母语，它说找不到指定的模块.收到此错误消息后，我认为更改 IDE 可能是个好主意并再次切换到 Spyder(在 Anaconda 上).但是我也一直在这个 IDE 上遇到同样的错误.然后我在互联网上搜索并尝试了一切来帮助我解决问题.尝试在 anaconda 上卸载 OpenCV，然后重新安装或尝试以下命令:conda 安装 opencv-pythonconda 安装 opencv-contrib-pythonpip3 安装 opencv-pythonpip3 安装 opencv-contrib-python

Belirtilen modül bulunamadı. on the last line is in my mother-tongue and it says The specified module could not be found. After I got this error message, I thought changing the IDE might be a good idea and switched to Spyder(on Anaconda) again. But I kept getting the same error on this IDE too. Then I searched for the internet and tried everything to help me solve the problem. Tried to uninstall the OpenCV on anaconda and then re-install or tried the following commands: conda install opencv-python conda install opencv-contrib-python pip3 install opencv-python pip3 install opencv-contrib-python

我什至试图复制名为 cv2.cp37-win_amd64.pyd 的文件并将它们都粘贴到 C:\Python34\DLLs 和 C:\Python34\Lib\site-packages 文件夹，但发生了没有变化.我什至尝试过 PyCharm 考虑它可能会有所帮助，但它也没有帮助.我不知道如何解决这个问题.我应该卸载 Anaconda 和 OpenCV 并重新安装吗?或者也许我可以做一些我没有在互联网上遇到过的事情.您的帮助将不胜感激.不管怎么说，还是要谢谢你！我把我的原始代码留在下面:

I even tried to copy the file named cv2.cp37-win_amd64.pyd and paste both to C:\Python34\DLLs and C:\Python34\Lib\site-packages folders but there occurred no change. I even tried PyCharm considering it might help, but no it didn't help either. I don't know how to solve this problem. Shall I uninstall Anaconda and OpenCV and re-install? Or maybe there might be something I can do which I didn't come across on the internet. Your help will be muchly appreciated. Thanks anyway! I leave the original code of mine below:

    import cv2
    import sys
    import numpy as np
    import os
    import scanning as sc


    face_classifier = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')          
    eye_classifier = cv2.CascadeClassifier('haarcascade_eye.xml')
    video_capture = cv2.VideoCapture(0)
    img_counter = 0
    imagePath = r'C:\Users\User\Desktop\SeniorProject\EE 492\lbp\images\testing'
    newPath = r'C:\Users\User\Desktop\SeniorProject\EE 492\lbp\images\testing2'
    location = []

    while True:
       _, frame = video_capture.read()
       im_gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
       k = cv2.waitKey(1) & 0xFF


     #Detect faces, eyes and smiles in input frame
     faces = face_classifier.detectMultiScale(im_gray, scaleFactor = 1.5, minNeighbors = 3, flags = 
        cv2.CASCADE_SCALE_IMAGE, minSize = (30, 30))

     eyes = eye_classifier.detectMultiScale(im_gray, scaleFactor = 1.5, minNeighbors = 3, flags = 
        cv2.CASCADE_SCALE_IMAGE, minSize=(5, 5), maxSize=(10,10))


     # Draw a rectangle around the faces

     for x, y, w, h in faces:
         cv2.rectangle(frame, (x, y), (x+w, y+h), (0, 255, 0), 2)
         location.append([x,y,w,h])

     # Draw a rectangle around the eyes
     for ex, ey, ew, eh in eyes:
         cv2.rectangle(frame, (ex,ey), (ex+ew, ey+eh), (0, 0, 255), 1)


     # Display the resulting frame
     cv2.imshow('Face Detector', frame)

     if k%256 == 27: #ESC pressed
         break
     elif k%256 == 32: #SPACE pressed
         img_counter += 1
         img_name = "FaceDetect_webcam_{}.png".format(img_counter)
         cv2.imwrite(os.path.join(imagePath, img_name), frame)
         print("{} saved!".format(img_name))

   video_capture.release()