[Tutor] exercise (while loop)
Scott W Dunning
scott.w.d at cox.net
Tue Apr 1 03:07:52 CEST 2014
I’m working on a few exercises and I’m a little stuck on this one.
This is what the book has but it just gives me an endless loop.
def square_root(a, eps=1e-6):
while True:
print x
y = (x + a/x) / 2
if abs(y-x) < epsilon:
break
round(square_root(9))
I tweaked it to what I thought was correct but when I test it I get nothing back.
def square_root(a, eps=1e-6):
x = a/2.0
while True:
y = (x + a/x)/2.0
if abs(x - y) < eps:
return y
x = y
round(square_root(9))
The way I tweaked it seems to work, I’m getting the correct answer on the calculator but the interpreter is not returning anything when I check in python.
The books way is just print whatever I use for x, so I don’t understand that at all.
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