# Python ICE 3

Write a Python function to evaluate \[ s_N=\sum_{n=1}^N (-1)^{n+1}\frac1n \] Obviously it will take one argument, and return one output.

The "final exam" for this course will take place
at 8:00 AM on Tuesday, 12 December. This will be an ordinary
50 minute test. It will be comprehensive, but weighted toward
the latter half of the semester. As always, paper notes will
be permitted, but no electronic devices will be allowed.
A sample exam is available.

A
Solution example is available
for the quiz. The solution to
Test 1 is still available too.

The ultimate assignment is posted.