se.parse_video() while choice!= 5: print("__________________Welcome_________________") print("1.Search by Call Number") print("2.Search by Title") print("3.Search by Subject") print("4.Search by Others") print("5.Exit") print("__________________________________________") choice = input("Please enter your choice:") if choice == 1: search = raw_input("Enter string to search:") se.contains_call_no(search) if se.result_found(): se.display_results() else: print("No match Found") elif choice == 2: search = raw_input("Enter string to search:") se.contains_title(search) if se.result_found(): se.display_results() else: print("No match Found") elif choice == 3: