Look it up! clear solution for Humpty Dumpty Form by nickie - python coding challenges

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Look it up! solution in Clear category for Humpty Dumpty Form by nickie

from math import sqrt, pi, asin, atanh

# http://en.wikipedia.org/wiki/Spheroid
def checkio(c, a):
    a, c = a/2, c/2
    if c < a:   # oblate
        e = sqrt(1-(c/a)**2)
        s = 2 * pi * a**2 * (1 + (1 - e**2) / e * atanh(e))
    elif c > a: # prolate
        e = sqrt(1-(a/c)**2)
        s = 2 * pi * a**2 * (1 + c / a / e * asin(e))
    else:       # sphere
        s = 4 * pi * a**2
    v = 4 * pi / 3 * a**2 * c
    return [round(v, 2), round(s, 2)]

Feb. 6, 2014

Comments:

bryukh on Feb. 6, 2014, 10:31 p.m.
Sometime you use spaces around operators, sometime - not. And imho, it is not necessary to replace the names of the arguments for the clear solution.

nickie on Feb. 6, 2014, 10:40 p.m.
Right. I tend to use spaces when the formula looks too complicated otherwise. I changed the names to c and a to correspond to the Wikipedia page. Then realized that these were the radii while you're giving the diameters, but I forgot to put the old names back. Lines 4 and 5 should be: <pre class='brush: python'>def checkio(height, width): a, c = width/2, height/2 </pre>

bryukh on Feb. 6, 2014, 11 p.m.
Got it.

Cjkjvfnby on Feb. 9, 2014, 4:25 p.m.
I suggest to add spaces around - in line 7 and 10. In other places I used same style.

Alf_ on Feb. 11, 2014, 4:40 a.m.
<pre class='brush: python'>a, c = a/2, c/2 </pre> I don't like to change the meaning of variables. But probably in the very beginning of the functions it is ok

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