OpenCV支持从网络摄像头获取数据，并且默认情况下随附Python包装器，您还需要安装numpyOpenCV Python扩展名（称为cv2）才能工作。从2019开始，您可以使用pip安装这两个库： pip install numpy pip install opencv-python
从使用opencv和python显示网络摄像头Feed复制的示例：
import cv2
cv2.namedWindow("preview")
vc = cv2.VideoCapture(0)
if vc.isOpened(): # try to get the first frame
rval, frame = vc.read()
else:
rval = False
while rval:
cv2.imshow("preview", frame)
rval, frame = vc.read()
key = cv2.waitKey(20)
if key == 27: # exit on ESC
break
cv2.destroyWindow("preview")
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