import os nr=103 nz=723 minR=5.15 maxR=15.35 minZ=0 maxZ=72.3 outfile=open("dummydev","w") string=str(nr)+" "+str(nz)+" "+str(minR)+" "+str(maxR)+" "+str(minZ)+" "+str(maxZ)+"\n" outfile.write(string) for r in range(nr): for z in range(nz): string="5 5 "+str((r+1)*(z+1)*30)+" "+str((r+1)*(z+1)*75000)+" "+str((r+1)*(z+1)*0.05)+"\n" outfile.write(string) outfile.close()