Catch Mantra Error

[elecstorm]

Hi! Is there a way to catch Mantra error in python script?

I want to implement something like this:

hou.hipFile.load(hipPath)
try:
    hou.node("/out/mantra").render((1, 1, 1))
except error:
    #launch manta again or something else...
hou.hipFile.clear()
print "Frame " + str(1) + " was rendered"

Edited September 21, 2015 by elecstorm

[elecstorm]

Ok, I found this way:

    try:
        hou.node("/out/mantra1").render((1,1,1))
    except hou.Error, ex:
        print ex.instanceMessage()

It works in the python shell, I have not tested it with the hython. But I don't understand this exception (I found it somewhere):

except hou.Error, ex

"hou.Error, ex" - It's not definition (because of comma). So, what is it?

Edited September 21, 2015 by elecstorm

[Guest mantragora]

Comma is old way of storing info returned from exception as variable that you can access. Use 'as' instead of comma for future proof way.

[elecstorm]

Comma is old way of storing info returned from exception as variable that you can access. Use 'as' instead of comma for future proof way.

Ok, thank you!

 

I checked script with hython - it works.