Dennis Lee Bieber wrote:
>
>
(snip)
> but that may not be desirable if None is a valid value => myA.f(None),
> so...
>
> class A(object):
> def __init__(self, n):
> self.data =n
> def f(self, *arg):
> if len(arg) == 0:
> x = self.data
> else:
> x = arg[0]
> print x
Another solution to this is the use of a 'marker' object and identity test:
_marker = []
class A(object):
def __init__(self, n):
self.data =n
def f(self, x = _marker):
if x is _marker:
x = self.data
print x
--
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])"
--
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