Databases
StackOverflow2013
Postsdbo
POKeyboardInterrupt does not work in multi threading python
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POKeyboardInterrupt does not work in multi threading python
    primarykey
    data
    text
    <p>I am trying to do multi threading to check the network connection. My code is:</p> <pre><code>exitFlag = 0 lst_doxygen=[] lst_sphinx=[] class myThread (threading.Thread): def __init__(self, counter): threading.Thread.__init__(self) self.counter=counter def run(self): print "Starting thread" link_urls(self.counter) def link_urls(delay): global lst_doxygen global lst_sphinx global exitFlag while exitFlag==0: try: if network_connection() is True: try: links = lxml.html.parse(gr.prefs().get_string('grc', 'doxygen_base_uri', '').split(',')[1]+"annotated.html").xpath("//a/@href") for url in links: lst_doxygen.append(url) links = lxml.html.parse(gr.prefs().get_string('grc', 'sphinx_base_uri', '').split(',')[1]+"genindex.html").xpath("//a/@href") for url in links: lst_sphinx.append(url) exitFlag=1 except IOError, AttributeError: pass time.sleep(delay) print "my" except KeyboardInterrupt: exitFlag=1 def network_connection(): network=False try: response = urllib2.urlopen("http://google.com", None, 2.5) network=True except urllib2.URLError, e: pass return network </code></pre> <p>I have set a flag to stop the thread inside while loop. I also want to exit the thread by pressing Ctrl-C. So I have used try-except but thread is still working and does not exit. If I try to use </p> <pre><code>if KeyboardInterrupt: exitFlag=1 </code></pre> <p>instead of try-except, thread just works for first time execution of while loop and then exist. p.s. I have created the instance of myThread class in another module.</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USuser2460869
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COcan you show the code where you create the instances of the threads? By the way, "if KeyboardInterrupt" will always return True, this is not the way you catch an exception. To catch the CTRL-C, it is better to use signal, see http://docs.python.org/2/library/signal.html
      singulars
      1. POKeyboardInterrupt does not work in multi threading python
      1. USConan Li
    2. COThat module is very long one that runs a software application. I just use these two lines to create instances:thread1 = myThread(2) thread1.start()
      singulars
      1. POKeyboardInterrupt does not work in multi threading python
      1. USuser2460869
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload