Re: Problem in running simple tutorial problems

[Matt Newville <newville@cars.uchicago.edu>]

Hi Jan,

On Mon, Mar 7, 2016 at 7:43 AM, Jan Cedric Hönig <JanHoenig@physik.uni-bonn.de> wrote:

Hi,

I'm planning to use epics, but I"m stuck right at the beginning.
I work on scientific linux 6 so first I start python:
ipython
Python 2.7.5 (default, Jun  5 2014, 14:38:05)

Then I try simple epics commands:
In [1]: import epics
In [2]: p = epics.PV('LargeWaveform')

In [3]: p.connect
Out[3]: <bound method PV.connect of <PV 'LargeWaveform': not connected>>

But I am unable to connect any of my PVs. Am I doing something wrong?

'connect' is a method of a PV.  To run this method, add parens:

   p.connect()

The connection should happen automatically and soon, so that you don't need to explicitly run the connect method, and can just access the data:

   p.get()

You can also checked the value of `p.connected`, which will be True once (and if) the PV is connected.

--Matt