在python中导入VLC模块时出现属性错误 [英] Attribute error when importing VLC module in python
问题描述
当我尝试运行此代码时:
When i try to run this code :
import cv2
import vlc
cam = cv2.VideoCapture(0)
m = vlc.MediaPlayer('D:\faith-42201.mp3')
fd = cv2.CascadeClassifier(r'C:\Users\Shivani Khare\AppData\Local\Programs\Python\Python37-32\Lib\site-packages\cv2\data\haarcascade_frontalface_alt.xml')
m.play()
flag=1
m.audio_set_volume(100)
while(True):
r,i = cam.read()
#i[0:10,:,:]=255
#for adding rows
j = cv2.cvtColor(i,cv2.COLOR_BGR2GRAY)
face = fd.detectMultiScale(j,1.3,7)
for (x,y,w,h) in face:
cv2.rectangle(i,(x,y),(x+w,y+h),(0,0,0),-1)
t = w*h
m.audio_set_volume(100-int(t/500))
l = len(face)
if(l>0):
m.play()
flag = 0
elif(flag==0):
m.pause()
flag = 1
print("no of faces are : ",len(face),face)
cv2.imshow('image1',i)
k = cv2.waitKey(5)
print(k)
if(k==27):
cv2.destroyAllWindows()
break
我一直收到此错误:
回溯(最近通话最近一次):
Traceback (most recent call last):
文件"C:\ Users \ Shivani Khare \ AppData \ Local \ Programs \ Python \ Python36 \ hi.py",第5行,在m = vlc.MediaPlayer('D:\ faith-42201.mp3')新建中的文件"C:\ Users \ Shivani Khare \ AppData \ Local \ Programs \ Python \ Python36 \ lib \ site-packages \ vlc.py",第3184行o.set_media(instance.media_new(* args))在Media_new中的文件"C:\ Users \ Shivani Khare \ AppData \ Local \ Programs \ Python \ Python36 \ lib \ site-packages \ vlc.py",行1788m._instance =自我AttributeError:'NoneType'对象没有属性'_instance'
File "C:\Users\Shivani Khare\AppData\Local\Programs\Python\Python36\hi.py", line 5, in m = vlc.MediaPlayer('D:\faith-42201.mp3') File "C:\Users\Shivani Khare\AppData\Local\Programs\Python\Python36\lib\site-packages\vlc.py", line 3184, in new o.set_media(instance.media_new(*args)) File "C:\Users\Shivani Khare\AppData\Local\Programs\Python\Python36\lib\site-packages\vlc.py", line 1788, in media_new m._instance = self AttributeError: 'NoneType' object has no attribute '_instance'
请帮助
推荐答案
您正在第5行的MediaPlayer构造函数中传递一个列表,但它需要一个字符串(参考:
You're passing a list in MediaPlayer constructor in line#5, but it expects a string(ref: https://linuxconfig.org/how-to-play-audio-with-vlc-in-python).
尝试进行此更改:
m = vlc.MediaPlayer('D:\faith-42201.mp3')
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