On May 9, 5:49 pm, [EMAIL PROTECTED] wrote: > Thanks for the insights. I solved the problem as follows: I created a > new class method called cleanUp, which resets NStocks to an empty list > and N1 to 0. Works like a charm - it's the first time I've used a > class method, and I immediately see its utility. Thanks again > > class Stock(object): > NStocks = [] #Class variables > N1 = 0 > > @classmethod > def cleanUp(cls): > Stocks.NStocks = [] > Stocks.N1 = 0 > > def simulation(N, par1, par2, idList, returnHistoryDir): > > Stock.cleanUp() > results = ...... > print results.
class A: b= 0 A.b a= A() a.b a.b+= 1 a.b A.b A.b=20 a.b A.b a1= A() a1.b a.b A.b a1.b+=10 a1.b a.b A.b It looks like an instance gets its own copy of A's dictionary upon creation, and -can- no longer affect A's dictionary, though both can be changed elsewhere. Doesn't seem prudent to -obscure- a class by an instance, but if that's not what goes on, then I'm missing something. -- http://mail.python.org/mailman/listinfo/python-list