text: 
  # coding: utf-8
  
  # In[1]:
  
  import pyximport; pyximport.install()
  import numpy as np
  import h5py
  import time
  import turbulence
  
  def run_generator(N = 256, index=3.0/2.0, seed=0x4d3d3d3):
      vel2 = turbulence.Turbulence_Generator((N,N,N),
               index, 1, N**3, [0.0,0.0,0.0], [1.0/N, 1.0/N, 1.0/N],
               seed)
      with h5py.File("vel_init.h5",'w') as h:
          h.create_dataset('velocity_dataset',data=vel2)
  