Fix sim.extra regex to match Python 2.7.x where x is two digits

[MBradbury]

Fix sim.extra regex to match Python 2.7.x versions where x is two digits. Also support Python 3 and development versions of Python.

I posted this fix to the tinyos.users mailing list, but the post hasn't been approved yet. See the thread at: https://www.millennium.berkeley.edu/pipermail/tinyos-help/2017-January/059055.html

[cire831]

looks like the previous version would only match against Python 2.x something.

the new version looks like it will match any Python x.x.x that probably isn't what is intended.

I'm pretty sure it needs to be something Python 2.x...

[MBradbury]

Actually it was intended. On my fork I added support for Python 3 and thought it would be easier to catch any digit, rather than just 2 or 3.

[cire831]

does it break anything?

[MBradbury]

It doesn't seem to do so. Simulations give different results with the same seed, but they're still deterministic. Had to tweak a few files to replace xrange with range and also modify the swig bindings.

However, I've ended up going back to 2.7 due to slower performance.

In terms of the regex, it should just be more general and haven't seen it break. I've also used it with things like 3.6-dev and pyenv installed versions of python.

[cire831]

okay. I'm okay with going ahead with this. However....

I'm not okay with accepting any version of python which I beleive the patch will do.

I'd suggest you change it to recognize any version of 2.7 (one or two digits) and any version of 3

sound reasonable?

[MBradbury]

Sorry for the long gap, this got lost.

I've pushed a fix so that only Python 2 or Python 3 is matched.

[cire831]

no worries

thanks for making the effort