On 2022-07-24 at 19:47:38 -0500,
Khairil Sitanggang <ksi...@gmail.com> wrote:
> Regarding [Peter Otten's] comment : "
> *However, usually object creation and initialization iscombined by allowing
> arguments to the initializer:*" , so which one of the two classes Node1,
> Node2 below is more common in practice? Option 2, I guess.
No. Please use option 1.
Another option would be to expose b as an optional parameter with a
default value:
class Node:
def __init__(self, a, b=0):
self.a = a
self.b = self.calculation() if b == 0 else b
There are other ways to write that particular assignment to b (because
the default is 0), but the relevant concept for right now is that
callers *can* supply a value for b, but that they don't *have* to:
n1 = Node(a) # uses a default value for b
n2 = Node(a, 22) # overrides the default; use 22 instead
Designing APIs can be tricky, and it's not an exact science.
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