[hajile]

Memory leaks appear in BOTH (specifically, any data structure that accidentally keeps references to stuff will leak memory in python). The biggest difference is that Python won't create the particularly bad/dangerous memory leaks (eg, use after free).

[Jtsummers]

Use after free is not a consequence of memory leaks. A memory leak is, specifically, memory which is still allocated but not referenced. Use after free errors can't happen if you don't free the memory.