new_contents: __author__ = 'atulkanaujia'
  
  from matplotlib import *
  from numpy import *
  import matplotlib.pyplot as plt
  from mpl_toolkits.mplot3d import Axes3D
  
  rcParams['legend.fontsize'] = 10
  
  fig = plt.figure()
  ax = fig.gca(projection='3d')
  theta = linspace(-4*pi, 4*pi,100)
  z = linspace(-2,2,100)
  r = z**2 + 1
  x = r*sin(theta)
  y = r*cos(theta)
  ax.plot(x,y,z,label='parametric curve')
  ax.legend()
  plt.show()
  
subject: test commit 1