python - raise ConnectionError in python2.7 -

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i want raise connectionerror (a python 3 subclass) when program fails connect local service. i'm using python2.7. testing out though, looks have import module working:

>>> raise connectionerror("test") traceback (most recent call last):   file "<stdin>", line 1, in <module> nameerror: name 'connectionerror' not defined

how can raise type of exception?

connectionerror not exist in python 2, can see the python 2 documentation. can of course create own subclass of oserror (and call connectionerror if want), no such thing built in.


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