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[RaiMan <question169307@xxxxxxxxxxxxxxxxxxxxx>]

Question #169307 on Sikuli changed:
https://answers.launchpad.net/sikuli/+question/169307

    Status: Open => Answered

RaiMan proposed the following answer:
In any case: You cannot start a new observe() inside the handler.

*** So your basic code should be:

def myH(e):
 hover(picture)
 stopObserver()

picture = "your-captured-image.png" # only one capture / multiple use
onAppear(picture, myH)

observe(FOREVER)

*** So if you want this to continue this for ever:

def myH(e):
    hover(picture)
    stopObserver()

picture = "your-captured-image.png" # only one capture / multiple use
onAppear(picture, myH)

while True:
    observe(FOREVER) # this will start observing again, when handler has stopped the observer

But this does not make sense, because I cannot see any action to wait
until the image disappears to start a new observation.

*** do not make another find in the handler
in the handler, you know the match of the onAppear(), so you can use:

def myH(e):
    hover(e.match)
    stopObserver()

(look: http://sikuli.org/docx/region.html#observing-visual-events-
in-a-region)

*** using exists() instead of observe()
for these situations (observing in foreground - script waits) I prefer to use loops and exists()

picture = "your-captured-image.png" # only one capture / multiple use

while True: # run forever
    while not exists(picture, 0): # wait for picture
        wait(1)
    hover(getLastMatch())
    wait(10) # or something else to make picture vanish

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