Would it be possible to make generators pickle-able?  I
mean, currently the internal state is saved in some
way.  Would it be possible to make pickle handle them?

Put another way, if generators had a __getnewargs__
function that returned some data (say a tuple of module
name, function name, locals/globals dicts and some code
dependent location data) and then allow:

  generator.__new__(statedata)

to reconstruct it (or something more elegant).