Peter Otten wrote:
Jason Scheirer wrote:
On Jun 8, 9:37 am, Peter Otten <__pete...@web.de> wrote:
Ross Williamson wrote:
Hi Everyone,
Just a quick question - Is it possible to assign class variables in
the __init__() - i.e. somthing like:
def __init__(self,self.source = "test", self.length = 1)
rather than
def __init__(self,source = "test", length = 1):
No. If you are just lazy, try
import sys
def update_self():
... d = sys._getframe(1)
... d = d.f_locals
... self = d.pop("self")
... for k, v in d.iteritems():
... setattr(self, k, v)
...>>> class A(object):
... def __init__(self, source="test", length=1):
... update_self()
... def __repr__(self):
... return "A(source=%r, length=%r)" % (self.source,
self.length)
...>>> A()
A(source='test', length=1)>>> A(length=42)
A(source='test', length=42)
Personally, I prefer explicit assignments inside __init__().
Peter
Or more simply
def __init__(self, source = "test", length = 1):
for (k, v) in locals().iteritems():
if k != 'self':
setattr(self, k, v)
The idea was that you put update_self() into a module ready for reuse...
Peter
still
def __init__(self, source="test", length=1):
self.source = source
self.length = length
is the way to go. OP's original idea is a bad idea :).
Could be a problem with hundreds of parameters, but who write
constructors with hundreds of parameters ?
JM
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