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ProgressBar - Python and Powershell

Alec Taylor alec.taylor6 at gmail.com
Mon Nov 21 08:08:29 EST 2011 
New thread!

On Mon, Nov 21, 2011 at 11:27 PM,  <Nikunj.Badjatya at emc.com> wrote:
> Hey Thanks. Will do that.
>
> Just a question in general.  Is it possible that we have opened one file in r+ mode ( file1.txt ). We have 2 threads, thread1 will continuously only read the file in a loop. Thread2 will only update the data in the file. Now thread2 has called other script ( written in say Perl/Powershell ) and those scripts are inturn updating ( only writing ) into that file by their own file i/o mechanism.
> Is it possible by any chance? One file being shared between different processes one is updating and other is reading ..? Will this work in practical and what can be the complications ?
>
>
>
> -----Original Message-----
> From: Alec Taylor [mailto:alec.taylor6 at gmail.com]
> Sent: Monday, November 21, 2011 5:23 PM
> To: Badjatya, Nikunj
> Subject: Re: ProgressBar - Python and Powershell
>
> WiX will manage all the progress bar stuff for you.
>
> Just wrap it all in
>
> On Mon, Nov 21, 2011 at 9:44 PM,  <Nikunj.Badjatya at emc.com> wrote:
>> Yes I am executing powershell commands into virtual machines.
>>
>> Will have a look at WiX.
>>
>> But please, Answer my questions:
>>
>>>> My questions are:
>>>>
>>>> 1.       Can I have a better shared mechanism between python and
>>>> powershell.?  As I am using a file here. Reading + writing in python and
>>>> writing only in powershell.  !
>>>>
>>>> 2.       Does this thread mechanism work.? I am yet to implement and test
>>>> it.! :P What can be the possible shortfalls.?
>>
>> Thanks
>> Nikunj
>>
>> -----Original Message-----
>> From: Alec Taylor [mailto:alec.taylor6 at gmail.com]
>> Sent: Monday, November 21, 2011 11:59 AM
>> To: Badjatya, Nikunj
>> Cc: python-list at python.org
>> Subject: Re: ProgressBar - Python and Powershell
>>
>> So you're executing Powershell commands into Virtual Machines?
>>
>> Add this into the installer (probably WiX is your best bet)
>>
>> On Mon, Nov 21, 2011 at 3:40 AM,  <Nikunj.Badjatya at emc.com> wrote:
>>> Thanks for reply.
>>> Python and Powershell are required because the installer would deal in virtual machines ( VMware environment ).
>>> Some prechecks and postconfig are required in both VMware and Windows environment. For dealing with VMware environment powershell has the best bonding. For windows I am  using Python.
>>>
>>> I am new to this field and do not know if there is an alternative available.! Can you please suggest an alternative to Powershell in VM environment. ?
>>>
>>> The current look of the installer is completely command line based.
>>>
>>>
>>> -----Original Message-----
>>> From: Alec Taylor [mailto:alec.taylor6 at gmail.com]
>>> Sent: Sunday, November 20, 2011 7:22 PM
>>> To: Badjatya, Nikunj
>>> Cc: python-list at python.org
>>> Subject: Re: ProgressBar - Python and Powershell
>>>
>>> Why are you writing an installer in Python and Powershell?
>>>
>>> Just write an installer in WiX, NSIS or Inno like the rest of the sane world.
>>>
>>> Alternatively take a look at MakeMSI or the script python uses to
>>> generate there .MSI.
>>>
>>> Anything else is WAY too non-standard to consider.
>>>
>>> On Mon, Nov 21, 2011 at 12:01 AM,  <Nikunj.Badjatya at emc.com> wrote:
>>>> Can anyone throw some light on this please ! ?
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> From: python-list-bounces+nikunj.badjatya=emc.com at python.org
>>>> [mailto:python-list-bounces+nikunj.badjatya=emc.com at python.org] On Behalf Of
>>>> Nikunj.Badjatya at emc.com
>>>> Sent: Thursday, November 17, 2011 4:10 PM
>>>> To: python-list at python.org
>>>> Subject: ProgressBar - Python and Powershell
>>>>
>>>>
>>>>
>>>> Hi All,
>>>>
>>>>
>>>>
>>>> I am using Python 2.7, windows Env.
>>>>
>>>> I have an Installer written in Python(45%) and Powershell(55%) which is used
>>>> to install Virtual Machines at specific locations. It is single threaded.
>>>>
>>>> I am trying to implement a ProgressBar  for this installer. So that the user
>>>> will come to know the progress of the installation.
>>>>
>>>> I am using pypi progressbar module.
>>>>
>>>> The top script is in python which inturns calls powershell scripts using
>>>> subprocess.call() and proceeds with the installation.
>>>>
>>>>
>>>>
>>>> I am taking a shared file between python and powershell, so that diff
>>>> functions can update their %age completion level in to the file. Ex. Func1()
>>>> updates it to 5%,  func2() will add its own 5% to it.. and so on.
>>>>
>>>> At the start of the (main.py) script I am creating a thread whose sole
>>>> purpose would be to keep "READ" a temp file for a new entry in it.
>>>>
>>>> Based on this entry I can have my thread update the progressbar on the
>>>> console.
>>>>
>>>>
>>>>
>>>> My questions are:
>>>>
>>>> 1.       Can I have a better shared mechanism between python and
>>>> powershell.?  As I am using a file here. Reading + writing in python and
>>>> writing only in powershell.  !
>>>>
>>>> 2.       Does this thread mechanism work.? I am yet to implement and test
>>>> it.! :P What can be the possible shortfalls.?
>>>>
>>>>
>>>>
>>>>
>>>> Thanks
>>>>
>>>>
>>>>
>>>> Nikunj
>>>>
>>>> Bangalore - India
>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> http://mail.python.org/mailman/listinfo/python-list
>>>>
>>>
>>
>
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