import data.py using massive amounts of memory

[GHUM]

> Note that once it has made the .pyc file the subsequent runs take even
> less memory than the cpickle import.

Could that be the compiler compiling?

Without knowing to much details about that process, but from 2.4 to
2.5 the compiler was totally exchanged, <whatever> to AST.
That would explain the drop from 8Meg -> 2.2 Meg.

Harald