l = range(int(1E9))

[ElChino]

Mark Lawrence wrote:

> You might find this useful then in you haven't already seen it
> https://docs.python.org/3/howto/pyporting.html

The main reason I haven't switched to Python3 (from 2.7.4/MSVC),
is fear of a major breakage. How can I be certain that even if
I install to different directories, the Python2 and Python3 won't
step on each other toes. And what about all the .pyd I have around?
Do they need an update?

I'm barely familiar with virtualenv BTW; not sure another
confusing factor in the equation would be a good idea. Or
lessen my fear.