> It won't be very good documenation any more but nothing stops you
>
> from examining the result in the next doctest and making yourself
>
> happy about it.
>
>
>
> >>> x = input("indeterminate:")
>
> >>> result = "'{}'".format(x))
>
> >>> result.startswith("'") and result.endswith("'")
>
> True
>
Hi Neil, thanks for the hint, but this won't work.
The problem is that the function displays some output informing you of what
steps are being performed (some of which are displayed by a 3rd party function
that I don't control).
This output "interferes" with the output that should be checked by doctest.
For example, you can check that the following doctest would fail:
.. doctest:: example_fake
>>> def myfun(x,verbose):
... print "random output"
... return x
>>> myfun(10)
10
When you run make doctest the test fails with this message:
File "tutorial.rst", line 11, in example_fake
Failed example:
myfun(10)
Expected:
10
Got:
random output
10
In this case (imagine that "random output" is really random, therefore I can
not easily filter it, if not ignoring several lines. This would be quite easy
if ellipsis and line continuation wouldn't have the same sequence of
characters, but unfortunately this is not the case.
The method you proposed still is not applicable, because I have no way to use
startswith() and endswith()...
The following code could do what I want if I could ignore the output...
>>> def myfun(x,verbose):
... print "random output"
... return x
>>> result = myfun(10) #should ignore the output here!
>>> print result
10
fails with this message:
File "tutorial.rst", line 11, in example_fake
Failed example:
result = myfun(10)
Expected nothing
Got:
random output
(line 11 contains: >>> result = myfun(10))
A SKIP directive is not feasible either:
.. doctest:: example_fake
>>> def myfun(x):
... print "random output"
... return x
>>> result = myfun(10) # doctest: +SKIP
>>> result
10
fails with this error message:
File "tutorial.rst", line 12, in example_fake
Failed example:
result
Exception raised:
Traceback (most recent call last):
File "/usr/lib/python2.7/doctest.py", line 1289, in __run
compileflags, 1) in test.globs
File "<doctest example_fake[2]>", line 1, in <module>
result
NameError: name 'result' is not defined
As you can see is not that I want something too weird, is just that sometimes
you can't control what the function display and ignoring the output is a
reasonable way to implement a doctest.
Hope these examples helped to understand better what my problem is.
Thanks all of you guys for the hints, suggestions and best practices :)
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