Re: Python Script call from Button press, module not found

[Matt Newville via Tech-talk <tech-talk at aps.anl.gov>]

Hi Michael, 

For completeness, something like this would be a "more minimal" example:

import time

import numpy
import epics

needs_calc = False

def onButtonPush(pvname, value, **kws):
    needs_calc = (value = 1)

button_pv = epics.PV('Button:bo', callback=onButtonPush)

image_pv = epics.PV('AreaDetector:image1:ArrayData')

while True:
    time.sleep(0.025)
    if needs_calc:
        needs_calc = False
        button_pv.put(0)
        print("Do real calculation here ", numpy.sum(image_pv.get())

--Matt