python - Unable to kill Flask server launched by Popen on Ubuntu -


What I'm trying to achieve is the lesser requirement. # run PYE import requests import time from subprocess import Popen, PIPE server = popon ("./exp.py", stdout = PIPE, stderr = PIPE, shell = True) Time.sleep (1) res = requests.get ("http: // localhost: 1234 /") res.status_code == 200 server.kill () server.terminate () res = requests.get ("http: // Localhost: 1234 / ") Print

and the actual server script. < On order (): see DEF (): make_response ("") return if __name__ == "__main__": app.run (host = "localhost", port = 1234) line i python run.py Run From Shell: 

  (t) Khushon @ Fubini: / tmp $ ps aux | Grep app Khushan 21452 0.6 0.4 16416 9992 points / 2s 03:50 0:00 dragon ./app.py Yeukhon 21471 0.0 0.0 4384 804 points / 2s + 03:51 0:00 grep --color = auto app   
 is still hanging there. I have to hit it with the command line In fact, the last line of  run.py  Tells that the server was still alive (200 was returned)  
 I tried to kill with  os.kill (server) .pid, signal.SIGTERM)  and  os.kill (server.pid, signal.SIGKILL) < / Code> but none works  
 Normally  kill  will work, but I do not really know why it can not get the signal. I'm sure somehow refuses to shut down the flask.  
 What options do I have?  
 Strangely, my script works perfectly well on Mac OSX (I'm on 10.8.5, Mountain Lion). So far, I have tested on two Ubuntu 12.04 machines and they have the same behavior. I'm running Python 2.7.3 on my Mac OSX and Python 2.7.2 on both Mac OSX.  
  Correction : I have only one option to use. But I do not want to and yes, I have to launch one using Popen.  
 
 
 
  shell = true , the command is run by subshell.  
  server = popon ("./exp.py", stdout = PIPE, stderr = PIPE, shell = true)   
  server Terminate  will kill subsealand, but the web server will not be killed.  
 
 How to verify this? Try  print server.pid  after the  PP  call, and compare it with  ps  output.

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