we begin by assuming that there is some algorithm that can determine if any program terminates when executed on particular input if such an algorithm could be writtenwe could package it up in function def terminates(programinputdata)program and inputdata are both strings returns true if program would halt when run with inputdata as its input of coursei can' actually write the functionbut let' just assume that this function exists using the terminates functionwe can write an interesting program turing py def terminates(programinputdata)program and inputdata are both strings returns true if program would halt when run with inputdata as its input def main()read program from standard input lines [print("type in program (type 'doneto quit"line input(""while line !"done"lines append(lineline input(""testprog "\njoin(linesif program halts on itself as inputgo into an infinite loop if terminates(testprogtestprog)while truepass pass statement does nothing main( have called this program turing in honor of alan turingthe british mathematician considered by many to be the "father of computer science he was the one who first proved that the halting problem could not be solved the first thing turing py does is read in program typed by the user this is accomplished with sentinel loop that accumulates lines in list one at time the join method then concatenates the lines together using newline character ("\ "between them this effectively creates multi-line string representing the program that was typed turing py then calls the terminates function and sends the input program as both the program to test and the input data for the program essentiallythis is test to see if the program read from