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Subject: Re: How to define a global variable and global array in python script for a widget of Control system studio (CSS) ?
From: Anton Derbenev <aaderbenev@gmail.com>
To: lzf neu <lzfneu@live.com>
Cc: "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Sun, 29 Oct 2017 22:17:13 -0400
Hello Zhefu,

how about using a local PV to store the value? This would also give you the possibility to show it on your page, if needed. You can put local PV as an input for your script, e.g.:

loc://$(DID)_my_x(0)

implying that this possibility didn't change since I last checked...

Anton.

On Sun, Oct 29, 2017 at 10:33 AM, lzf neu <lzfneu@live.com> wrote:

Hi,

 

I want to add up a variable by 1 each time when PV are triggered and print the result in CSS terminal.


I try to define a variable x in python script as the following lines:


from org.csstudio.opibuilder.scriptUtil import PVUtil
x=0
x=x+1
print x


However, the results in CSS terminal are always print 1. And not 2, 3, 4, 5, 6, ....each time that I hope.


I have no idea how to define a global variable and a global array in python script for a widget of Control system studio (CSS), so that I can preserve the data each time.


Any help will be appreciated and thanks in advance !


Zhefu




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答复: How to define a global variable and global array in python script for a widget of Control system studio (CSS) ? lzf neu

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