D:\Maindocument\pycharmDemo\venv\Scripts\python.exe D:/Maindocument/pycharmDemo/opencv_人臉是被.py
Traceback (most recent call last):
  File "D:/Maindocument/pycharmDemo/opencv_人臉是被.py", line 4, in <module>
    import cv2
ModuleNotFoundError: No module named 'cv2'

Process finished with exit code 1

• 在安裝opevncv時會出現 ImportError: No module named cv2 的錯誤，找不到cv2的包。
• 意思是找不到這個模組
• 我們在命令列進行此模組的安裝即可
• pip install opencv-python
• 或者可以在pycharm中進行安裝，file->setings->ProjectLpycharmDemo->Project Interpreter 中找到pip 然後雙擊滑鼠左鍵，會出現一個搜尋框
• 
• 然後點選 Install Package即可