"Alex Hall" <mehg...@gmail.com> wrote
class c(object):
def __init__(self, arg1, arg2):
self.arg1=arg1
self.arg2=arg2
def doSomething(self, arg3=self.arg1):
...
The above results in an error that "name 'self' is not defined". Why
can I not set the default values of a method's arguments to class
vars
like that? Thanks!
Because they are not class vars they are instance vars.
self.arg1 does not exist until after an instance has been
created and they have been set by __init__. At the time
the class is defined self.arg1 does not exist.
You could do
class c(object):
defArg = 42
def __init__(self, arg1, arg2):
self.arg1=arg1
def doSomething(self, arg3=defArg):
...
HTH,
--
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk
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