How enable ellipsis when calling Python doctest?

Question

In Python (3.3.2) doctest, ellipsis (...) can match any string. So, for the code below

def foo():     """     >>> foo()     hello ...     """     print("hello world") 

when running doctest it shouldn't raise any error. But

$ python -m doctest foo.py  ********************************************************************** File "./foo.py", line 3, in foo.foo Failed example:     foo() Expected:     hello ... Got:     hello world ********************************************************************** 1 items had failures:    1 of   1 in foo.foo ***Test Failed*** 1 failures. 

What I must do to enable the ellipis? As far as I can tell it is disable by default.

I know that add # doctest: +ELLIPSIS, as in the code below, solve it, but I like to enable ellipsis for all tests.

def foo():     """     >>> foo() # doctest: +ELLIPSIS     hello ...     """     print("hello world") 

Answer 1

You can pass in optionflags to the testmod method, but this requires you to run the module itself instead of the doctest module:

def foo():     """     >>> foo()     hello ...     """     print("hello world")  if __name__ == "__main__":     import doctest     doctest.testmod(verbose=True, optionflags=doctest.ELLIPSIS) 

Output:

$ python foo.py Trying:     foo() Expecting:     hello ... ok 1 items had no tests:     __main__ 1 items passed all tests:    1 tests in __main__.foo 1 tests in 2 items. 1 passed and 0 failed. Test passed.