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1

Is it possible to write a doctest unit test that will check that an exception is raised? For example, if I have a function foo(x) that is supposed to raise an exception if x<0, how would I write the doctest for that?

+11  A: 

Yes. You can do it. The doctest module documentation and Wikipedia has an example of it.

   >>> x
   Traceback (most recent call last):
     ...
   NameError: name 'x' is not defined
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