On Mon, Oct 25, 2010 at 8:47 AM, chad <cdal...@gmail.com> wrote: > I tried the following... > > > > #!/usr/bin/python > > class foo: > def first(self): > print "Chad " > > def last(self): > print "A " > > x = foo() > y = x.first() > y.last() > > But when I ran it, I got the following... > > [cdal...@localhost oakland]$ ./chain.py > Chad > Traceback (most recent call last): > File "./chain.py", line 12, in ? > y.last() > AttributeError: 'NoneType' object has no attribute 'last' > [cdal...@localhost oakland]$
What you want is this: >>> class Foo(object): ... def first(self): ... print "Chad " ... return self ... def last(self): ... print "A " ... return self ... >>> x = Foo() >>> y = x.first() Chad >>> y.last() A <__main__.Foo object at 0x1011d7ad0> >>> NB: You must return "self" in this case so you can do chained calls. cheers James -- -- James Mills -- -- "Problems are solved by method" -- http://mail.python.org/mailman/listinfo/python-list
