File record separators.

[HMS Surprise]

Thanks folks. Was unaware of enumerate , still have a lot to learn
about python.

Sorry for the poorly phrased request, but you gathered the gist of it.
My wonderment is how to write the following 2 lines and make sure they
are saved as separate records or lines so that I pull in only one at a
time with readline(?).

['a', 'b'], ['c','d']]
[['a', 'b'], ['c','d'], ['e','f']]

Would like to use pickle but it is apparently unavailable in the
package I am using, Jython 2.2.