初试摄像头

1. sudo apt-get install python-imaging

1. #！/usr/bin/env python
   
2. #-*- coding: UTF-8 -*-
   
3. 
   
4. import os, signal, subprocess
   
5. 
   
6. strfile1 = "qrcode"
   
7. 
   
8. def erzeugen():
   
9. text=raw_input(u"enter QRCode in: ")
   
10. os.system("qrencode -o "+strfile1+".png '"+text+"'")
    
11. print u"QRCode is in: "+strfile1+".png"
    
12. 
    
13. def lesen():
    
14. zbarcam=subprocess.Popen("zbarcam --raw --nodisplay /dev/video0", stdout=subprocess.PIPE, shell=True, preexec_fn=os.setsid)
    
15. print u"zbarcam start successfully=..."
    
16. i=0
    
17. while i<5:
    
18. ## while True:
    
19. qrcodetext=zbarcam.stdout.readline()
    
20. if qrcodetext！="":
    
21. print qrcodetext
    
22. i=i+1
    
23. ## print u"successfully"
    
24. ## break
    
25. 
    
26. os.killpg(zbarcam.pid, signal.SIGTERM) # close program
    
27. print u"zbarcam stop successfully"
    
28. return u"QRCode: "+qrcodetext

1. #！/usr/bin/env python
   
2. #-*- coding: UTF-8 -*-
   
3. 
   
4. import qrcode
   
5. 
   
6. while (True):
   
7. print u"1: qrcode create"
   
8. print u"2: qrcode identify"
   
9. print u"3: quit"
   
10. select=int(raw_input(u"choose: "))
    
11. if select == 1:
    
12. qrcode.erzeugen()
    
13. elif select == 2:
    
14. result=qrcode.lesen().strip()
    
15. print result
    
16. elif select == 3:
    
17. print u"end..."
    
18. break
    

1. python main.py

小编用的什么摄像头，USB的吗?

是的~

多谢啦！多谢啦！多谢啦！

终端上报错！