09: Run batch, add prefix mechanism

Exercise sheet 9/latticescalar.py

@@ -62,6 +62,7 @@ def main():
 	parser.add_argument('-m', type=int, default=2, help='Number M of sweeps per measurement')
 	parser.add_argument('-o', type=int, default=30, help='Time in seconds between file outputs')
 	parser.add_argument('-f', help='Output filename')
+	parser.add_argument('-p', type=str, default='data_', help='Data output filename prefix')
 	args = parser.parse_args()
 	
 	# perform sanity checks on the arguments
@@ -85,7 +86,7 @@ def main():
 	measurements = args.n or 0
 	if args.f is None:
 		 # construct a filename from the parameters plus a timestamp (to avoid overwriting)
-		 output_filename = "data_l{}_k{}_w{}_d{}_{}.hdf5".format(lamb,kappa,width,delta,time.strftime("%Y%m%d%H%M%S"))
+		 output_filename = "{}l{}_k{}_w{}_d{}_{}.hdf5".format(args.p,lamb,kappa,width,delta,time.strftime("%Y%m%d%H%M%S"))
 	else:
 		 output_filename = args.f