How to execute "gksudo umount VirtualDVD"

[Demosthenes Koptsis]

The code is ok, i need to provide the absolute path to umount.

     def umount(self):
         '''unmounts VirtualDVD'''
         #get virtualdvd folder
         home = QtCore.QDir.homePath()
         vpath = home + "/VirtualDVD"

         cmd = 'gksudo umount ' + vpath
         subprocess.Popen(str(cmd), shell=True, stdout=subprocess.PIPE)

This is strange, in terminal "gksudo umount VirtualDVD" worked fine but 
not from code...

 From code i have to "gksudo umount /home/user/VirtualDVD"

Thanks all for your help.


Regards,

Dim


On 10/29/2016 01:22 AM, Wildman via Python-list wrote:
> On Fri, 28 Oct 2016 17:19:17 -0500, Wildman wrote:
>
>> On Fri, 28 Oct 2016 11:05:17 +0300, Demosthenes Koptsis wrote:
>>
>>> Yes it was pasted wrong...
>>>
>>>       def umount(self):
>>>           '''unmounts VirtualDVD'''
>>>           cmd = 'gksudo umount VirtualDVD'
>>>           proc = subprocess.Popen(str(cmd), shell=True,
>>> stdout=subprocess.PIPE).stdout.read()
>>>           print proc
>>>
>>> it fails silently.... the gksudo runs correctly. I can input the password.
>>>
>>> But the umount does nothing. I keep have mounted the VirtualDVD folder.
>>>
>>>
>>> On 10/28/2016 12:54 AM, Ian Kelly wrote:
>>>> On Thu, Oct 27, 2016 at 3:30 PM, Demosthenes Koptsis
>>>> <demosthenesk at gmail.com> wrote:
>>>>> I want to execute the command "gksudo umount VirtualDVD"
>>>>>
>>>>> My code is this but it fails:
>>>>>
>>>>> def umount(self):
>>>>>       '''unmounts VirtualDVD''' cmd ='gksudo umount VirtualDVD' proc =
>>>>> subprocess.Popen(str(cmd),shell=True,stdout=subprocess.PIPE).stdout.read()
>>>>>       print proc
>>>> It looks like your code pasted incorrectly.
>>>>
>>>>> It pops up the gksudo dialog, and then fails. But i don't get any stdout or
>>>>> stderror.
>>>> Fails how? Is there an error? Does it hang? Does nothing happen at all?
>>>>
>>>> My initial thought is that you might want to try using
>>>> Popen.communicate instead of stdout.read in case you're getting
>>>> deadlocked. See the big red warning below
>>>> https://docs.python.org/3/library/subprocess.html#subprocess.Popen.stdout
>> Try this:
>>
>>      def umount(self):
>>          '''unmounts VirtualDVD'''
>>          cmd = ["gksudo", "umount", VirtualDVD]
>                                                 ^
>
>
>>          p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE)
>>          proc = p.communicate()
>>          print proc
> Oops!
>