Hi, I was trying to find a way to set, upon __init__() the parent of a
class to an existing instance. Here is a minimal example of what I'm
trying to do:
class A(object):
def __init__(self, x):
self.x = x
class B(A):
def __init__(self, *args):
if not isinstance(args[0], A):
super(B, self).__init__(args[0])
else:
self = args[0]
self.y = args[1]
b = B(4, 6)
print 'b:', b.x, b.y, type(b)
a = A(7)
c = B(a, 3) # Means: please set c parent's using instance "a"
print 'c:', c.x, c.y, type(c)
This does not work as can be tested. The reason I'm in search for a
solution in this area is that in our project, "A" is not copy-able (it
is written using a boost.python binding to a C++ object that does not
allow copying) - so I can't simply call, inside "B's __init__()", a
copy constructor for A.
Any ideas?
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