Question

Hi, I'm working on problem set 4 problem 4. How do I get my loop to keep running unless it is between epsilon and -epsilon?

Answer 1

while minus epsilon < something < epsilon:
keep doing stuff

http://docs.python.org/tutorial/introduction.html#first-steps-towards-programming
http://docs.python.org/reference/compound_stmts.html#while

Answer 2

Wouldn't it be more accurate to say : while something >epsilon or something <-epsilon:?
That's how I solved it anyway.
while -epsilon > something > epsilon: runs but always gives me the first guess.

Answer 3

You are right, I think bwCA made a slight mistake while typing. His test should be:
while abs(something) > epsilon: keep doing stuff
The idea is to continue until we have a value close enough to the exact solution.

Answer 4

Thanks, that's exactly what I was looking for.