Berthold Höllmann wrote:
> Saving the following code to a file and running the code through
> python does not give the expected error. disableling the "@decor" line
> leads to the expected error message. Is this a bug or an overseen
> feature?
Neither, I'd say. Just an unfortunate interaction between doctest and
function decoration. For the most common case where one function is wrapped
by another, Python 2.5 has grown a "meta-decorator"
>>> import functools
>>> def deco(f):
... @functools.wraps(f)
... def g():
... f()
... return g
...
>>> @deco
... def f():
... "yadda yadda"
...
>>> f.__doc__
'yadda yadda'
but with callable objects you're on your own, I think.
I came up with:
def register_doctest(name, doc):
global __test__
if doc:
try:
__test__
except NameError:
__test__ = {name: doc}
else:
if name in __test__:
raise ValueError("name clash")
__test__[name] = doc
class decor(object):
def __init__(self, f):
self.f = f
register_doctest(f.__name__, f.__doc__)
def __call__(self, *args, **kw):
return self.f(*args, **kw)
@decor
def f(a, b):
"""
>>> f(1,2)
False
>>> f(2,2)
False
"""
return a == b
import doctest
doctest.testmod()
Peter
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