Using python3 to solve the problem

Part II: A Pac-Man Puzzler (10 points) Pac-Man is a video game character who normally eats dots, power pellets, and the occasional ghost. Recently, he's fallen on hard times and has been reduced to (mainly) eating letters of the alphabet. Pac-Man can eat most letters of the alphabet, but he is unable to digest any of the characters in the word 'GHOST" (uppercase OR lowercase). When he reaches one of these characters in a string, he loses his appetite and stops eating Your ob is to complete the paan function, which traces Pac Man's progress through a string of uppercase and lowercase letters (with no spaces, digits, or symbols) and prints out the final state of the string. Use underscores (_) to represent consumed characters and a less-than sign (