python - Ensure that process started by COM connection is killed -


i'm automating minitab 17 using python's win32com library, , while of commands execute correctly, can't seem process started minitab process exit when script ends. structure looks like

from myapi import get_data  import pythoncom win32com.client import gencache  def process_data(data):     # in case of threading     pythoncom.coinitialize()     app = gencache.ensuredispatch('mtb.application')     try:         # processing         pass     finally:         # app-specific command supposed close software         app.quit()         # ensure object released         del mtb         # in case of threading         pythoncom.couninitialize()  def main():     data = get_data()     process_data(data)  if __name__ == '__main__':     main()

i don't exceptions raised or error messages printed, mtb.exe process still listed in task manager. more frustrating if run following in ipython session:

>>> win32com.client import gencache >>> app = gencache.ensuredispatch('mtb.application') >>> ^d

the minitab process closed immediately. observe same behavior in normal python interactive session. why process closed correctly when running in interactive session not in standalone script? done differently there isn't being performed in script?

i've tried running process_data in threading.thread , in multiprocessing.process no luck.

edit:

if have script containing nothing but

from win32com.client import gencache app = gencache.ensuredispatch('mtb.application')

then when run see mtb.exe process in task manager, once script exits process killed. instead question why matter if com object declared @ top-level vs. inside function?

i don't have minitab can't verify try forcing shutdown of com server setting app = none after call app.quit? python uses ref counting manage object life cycle, assuming there no other refs app setting none should cause finalized immediately. have seen cause similar issues. should not need weak reference, else going on. following, based on answer, should work: 

def process_data(mtb, data):     try:         mtb.do_something(data)     finally:         mtb.quit()  def main(mtb):     data = get_data()     process_data(mtb, data)  if __name__ == '__main__':     pythoncom.coinitialize()     mtb = gencache.ensuredispatch('mtb.application')     main(mtb)     mtb.quit()     mtb = none     pythoncom.couninitialize()

-

Comments

Post a Comment

Popular posts from this blog

apache - PHP Soap issue while content length is larger -

we have developed soap based webservice post data third party webservice. accepts 4 params. in 1 of parameters accepts xml string no size limit restriction put in place. the webservice works fine in local environment running on php 5.2 , apache2. works content length long 10 mb. in staging server running nginx , php fpm.we have updated max post size , max upload filesize in php.ini , client_max_body param in nginx.conf allow upto 50 mb. but webservice client keeps on loading in staging environment. gives 502 timeout , gives soap error. can me understand issue here?
Read more

asynchronous - Python asyncio task got bad yield -

i confused how play around asyncio module in python 3.4. have searching api search engine, , want each search request run either parallel, or asynchronously, don't have wait 1 search finish start another. here high-level searching api build objects raw search results. search engine using kind of asyncio mechanism, won't bother that. # no asyncio module used here class search(object): ... self.s = some_search_engine() ... def searching(self, *args, **kwargs): ret = {} # raw searching according args , kwargs , build wrapped results ... return ret to try async requests, wrote following test case test how can interact stuff asyncio module. # here testing script @asyncio.coroutine def handle(f, *args, **kwargs): r = yield f(*args, **kwargs) return r s = search() loop = asyncio.get_event_loop() loop.run_until_complete(handle(s.searching, arg1, arg2, ...)) loop.close() by running pytest, return runtimeerror: task got bad yield : {results s...
Read more

javascript - Complete OpenIDConnect auth when requesting via Ajax -

the normal openidconnect server works like: you go a.com/secure-resource you 302 server your browser handles , sends identity server you login there it sends a.com via post you logged in on a.com , a.com/secure-resource on browser. however have scenario i'm trying solve need help. the user logged in on idserver the user logged in on a.com the user not logged in on b.com we need send ajax call web server b.com (from domain a.com ) b.com configured use openidconnect. but because request b.com via ajax, user cannot redirected idserver. (all in response 302 ) we can go ahead , handle 302 via ajax (i'm still not sure whether work, security-wise). but is there scenario in identityserver/openidconnect designed these situations? with identityserver in scenario setup server b.com use bearer token authentication, need use access token provided a.com in headers of ajax call $.ajax({ url: 'http://b.com', headers: { ...
Read more