text: import numpy as np
  
  ttmbond = 10
  daywalk = np.arange(0,30)
  dtm = ttmbond - daywalk/252 
  
  curve_list = [0.083,0.25,0.5,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15]
  
  pos1= np.ones((len(daywalk+1),len(column_list)))
  pos2 = pos*curve_list
  
  pos3 = pos2 <= dtm