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Re: set environmental variable from python

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  Re: set environmental variable from python Artur Bercik <vbubbly21@gmail.com> - 2014-10-31 11:03 +0900
    Re: set environmental variable from python Rustom Mody <rustompmody@gmail.com> - 2014-10-30 19:45 -0700

#79989 — Re: set environmental variable from python

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Dear Dave Angel

Thanks for your answer.

I am using Python 2.7

I want to set it permanently.
I have to set several variables so it would be easier if I could set them
from Python.

Hearing the solution.

On Fri, Oct 31, 2014 at 10:50 AM, Dave Angel <davea@davea.name> wrote:

> On 10/30/2014 09:22 PM, Artur Bercik wrote:
>
>> I have to set environmental variable in my windows PC as follows:
>>
>> variable name: GISBASE
>>
>> value: C:\GRASS-64
>>
>> Is it possible to set it from python?
>>
>
> Which Python?  I'll have to assume 3.x
>
>
>> import sys
>>
>> sys.path.append("C:\\GRASS-64")
>>
>> But how to give variable name? I have to set both the variable name and
>> value.
>>
>>
> sys.path has nothing to do with an environment variable of GISBASE.
>
> Instead you could look up os.environ at:
>
>       https://docs.python.org/3/library/os.html
>
> Also see os.getenv and os.setenv.
>
>
>
> Note that it's not necessarily supported.  But I believe it is for a
> standard build on Windows.
>
> Next question is what you hope to achieve by setting such a variable. You
> do realize that it will vanish again when your python process ends?  So if
> you're just planning to use it in your own code, I'd recommend finding
> another method of saving the name & value.
>
> The only value I can see is if you plan to create a subprocess from your
> Python code.
>
> --
> DaveA
> --
> https://mail.python.org/mailman/listinfo/python-list
>

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#79995

On Friday, October 31, 2014 7:33:43 AM UTC+5:30, Artur Bercik wrote:
> Dear Dave Angel
> 
> 
> Thanks for your answer.
> 
> 
> I am using Python 2.7
> 
> 
> I want to set it permanently.
> I have to set several variables so it would be easier if I could set them from Python.

regedit is scriptable
http://support.microsoft.com/kb/310516

[Be careful though! Follow the precautions like backing up the registry
before messing around]

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