Skip and Pass

skip will skip the example completely while pass will execute it normally but it will not check the output.

See the difference between those two in these Python examples:

>>> def f():
...    print("Choosing a random number...")
...    return 42

>>> a = 1
>>> a = f() # this assignment will not be executed # byexample: +skip

>>> a
1

>>> a = f() # execute the code but ignore the output # byexample: +pass

>>> a
42

>>> a = f() # the output is not ignored so we must check for it
Choosing a random number...

See how to use -skip to support clean ups.