new_contents: import numpy as np
  
  #runas import numpy as np; r = np.arange(1000000); rosen(r)
  #pythran export rosen(float[])
  
  def rosen(x):
      t0 = 100 * (x[1:] - x[:-1] ** 2) ** 2
      t1 = (1 - x[:-1]) ** 2
      return np.sum(t0 + t1)
  
subject: Add good code for lazy analysis