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`line 95: LIb = np.empty(int(xlist))`
```c = np.linspace(0.01, 1, 100)
for ratio_beams in c:
s = 1
xlist = np.linspace(3, 16, 14)
ylist = np.linspace(0.01, 1, 100)
n, ratio_shear = np.meshgrid(xlist, ylist)
theta = 60

b = ratio_shear / (2 * s)
d_s = (2 * b * s)
a = b / (np.sin(np.radians(theta)))
d_b = 2 * ratio_beams * s
alpha = 360 / n

r = s/(2*(np.sin((np.pi/n))))
apothem = s / (2 * np.tan(np.radians(180 / n)))

AreaFil = n * (0.25 * np.pi * (d_b ** 2))
AreaElli = (np.pi * a * b) * n

Dc = s * (1 / np.sin((np.pi / n))) + d_b
t = np.sqrt((AreaFil + AreaElli) / 4)

Ic = ((np.pi) / 64) * ((Dc ** 4) - ((Dc - 2 * t) ** 4))

LIb = np.empty(int(xlist))
LIs = np.empty(int(xlist))

for i in xlist:
for i in range(1, (xlist+1)):
if (n % 2) == 0:
LIb[i-1] = abs(r * np.cos(np.radians((alpha / 2)) + (i - 1) * (np.radians(alpha))))
else:
LIb[i-1] = abs(r * np.cos(np.radians((i - 1) * (np.radians(alpha)))))

if (n % 2) == 0:
LIs[i-1] = abs(apothem * np.cos(np.radians((i - 1) * (np.radians(alpha)))))
else:
LIs[i-1] = abs(apothem * np.cos(np.radians((alpha / 2)) + (i - 1) * (np.radians(alpha))))

LIbSum = np.sum((LIb**2))
LIsSum = np.sum((LIs**2))

I1 = (np.pi * (d_b ** 4)) / 64
I2 = ((AreaFil / n) * (LIbSum))
I3 = ((np.pi / 4) * (a ** 2) * (b ** 2))
I4 = ((AreaElli / n) * (LIsSum))

Iz = I1 + I2 + I3 + I4

I_Ratio = (Iz / Ic)

for idx in range(int(ratio_beams)):
X = n #xlist
Y = ratio_shear #ylist
Z = I_Ratio #height, Iz/Ic
plt.contour(X, Y, Z)
plt.savefig(str(idx))```