name of image passed to function

if we are talking about the basic Sikuli usage, image is an image filename as a string.

exit(image + " not found")

Thank you RaiMan for fast answer, but it doesn't work.

I send image to my functions (imported from separate sikuli file) like that:
http://postimg.org/image/7ca9b4dkp/

This visual passing is very helpfull and i would not like to pass image paths, because the readiblity of the code will drop dramatically.

Ok, if you want to do such more sophisticated things, you should be aware, what is behind the image thumbnails in the IDE

- In the first case it is indeed an image file name (no badges)
- in the second case the image was processed with Preview and it is a Pattern now (Pattern("someImage.png").similar())

to let it work in all cases:
exit(str(image) + " not found")

with version 1.1.0 you can see, what code is behind the images:
in the menu View, there is a switch: Show Thumbnails (ctrl/cmd + t)

Thank you RaiMan!

Yes, i want to make complex automated reports, when an image will be not found.
Info about Pattern object type helped!

The output from str(image) is:
P(1444234433282.png) S: 0.7 T: 103,2

But:
image.getFilename() # a Pattern method
outputs absolute path, which is more usefull (the image can be sent automatically to email thanks to that)
i.e.:
/home/user/sikuli/scripts/script.sikuli/1444234433282.png

I understand that, to access getFilename() i need to pass always Pattern object to function.
Can I force that somehow without manually setting each image target offset or similarity level?

rather easy to solve:

# image is either string or Pattern
imageName = image
if isinstance(image, Pattern):
    imageName = image.getFilename()
print "[error] image not found %s" % (imageName)"

thank you!

image name is different then image.getFilename() , which gets the full path. Fortunately i can handle that ;)