How to catch - 'NoneType' object has no attribute 'something'

Question

I Know what the error:

AttributeError: 'NoneType' object has no attribute 'something'

means, but what I cannot figure out is how to catch it. Basically i want to check to see if my object is created or not.

I want to do something like this:

try:
    test = self.myObject.values()
except:
    print "Error happened"

But every time I do I get:

AttributeError: 'NoneType' object has no attribute 'values'

Can someone tell me how to catch this?

Answer 1

you can use the hasattr(object, name) method which returns True or False. If you try to access an attribute which does not exist you will always receive an exception. https://docs.python.org/2/library/functions.html#hasattr

If you still wish to catch the exception then simply do a try/catch block with exception type 'AttributeError'