Bob Gailer wrote:
Andre Engels wrote:
Is it possible to define a class in such a way, that if twice an
object is made with the same initialization parameters, the same
object is returned in both cases?
Use a "factory" function, and store a dictionary of instances as a class
property:
class myObj(object):
instances = {}
def __init__(self,a):
# the rest of your code
def makemyObj(a):
if a in myObj.instances:
return myObj.instances[a]
else:
new_instance = myObj(a)
myObj.instances[a] = new_instance
return new_instance
I neglected to show the function call:
a = makemyObj("a")
b = makemyObj("b")
c = makemyObj("a")
a and c will point to the same object
b will be a different object
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