[Jeff Melvaine] > I note that I can write expressions like "1 << 100" and the result is stored > as a long integer, which means it is stored as an integer of arbitrary > length. I may need to use a large number of these, and am interested to > know whether the storage efficiency of long integers is in danger of > breaking my code if I use too many. Would I do better to write a class that > defines bitwise operations on arrays of integers, each integer being assumed > to contain at most 32 bits?
Both array() objects and long integers are equally space efficient. In contrast, a list of integers takes up a lot of space (the list is stored as an array of pointers to individual integer objects). Raymond -- http://mail.python.org/mailman/listinfo/python-list