from matplotlib.pyplot import *
from numpy import linspace, cos, sin
from mpl_toolkits.mplot3d import Axes3D

t = linspace(0,50,200)
x = 5.*cos(t)
y = 5.*sin(t)
z = t/5.

fig = figure(figsize=(4,4))
ax = fig.add_subplot(111,projection='3d')
ax.view_init(30,60)

ax.plot(x,y,z)

ax.set_xlabel(r'x')
ax.set_ylabel(r'y')
ax.set_zlabel(r'z')
ax.set_title(r'Parametric helix: $\left<5\cos(t), 5\sin(t), \frac{t}{5}\right>$',fontsize=11)
fig.savefig("Test.svg",bbox_inches="tight",\
        pad_inches=.15)