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All right. So make sure you've given it a good go before you come over here,

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because I'm about to reveal the solution. In terms of step 4, here

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I've got a forked copy of the code. And if I scroll down to

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to-do number one, this is pretty simple.

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It just tells us to create a new variable called lives

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and this variable is going to be the one that's going to keep track of the

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number of lives the user has left. And to start off,

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it's going to be equal to six. Now we move on to to-do number two.

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And it tells us that if the guess is not a letter in the chosen word,

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then we have to reduce the number of lives by one.

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Now it might be really tempting to put this as an else statement here,

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because if the letter is equal to guess,

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then well obviously it matches. Well then else, that means it doesn't match.

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But check out what happens here if I just print a simple statement.

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So now if I hit run and we take a look on the right side,

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you can see that if I guess a,

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then you can see that we get 'no match' printed five times,

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and that should show you that this is actually not where we want to write the

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code for to-do number two,

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because remember to-do number two says if the guessed letter is not a letter in

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the chosen word, then we should reduce the lives by one. But actually in fact,

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what's happening here is it's looping through the entire word length,

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and for each of the letters in that chosen word,

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if the letter doesn't match the guess,

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then it's going to trigger this else statement.

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This is not what we want because in this case

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a does in fact match a letter in the word baboon,

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but we're getting no match being called five times.

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So instead, we wanna write it outside of the for loop,

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so at the same indentation level,

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and the hint is that the to-do is actually at the same level as where your

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answer code needs to go. So here,

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we're going to write an if statement and we're going to check if the guess is

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not in the chosen word.

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And basically this does a separate check.

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It goes through this entire word and checks

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if the guessed letter exists in there at all.

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And if this is true,

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then we're going to reduce the number of lives by one, so -= 1.

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Now, if at this stage

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after we've taken a life away and the number of lives goes down to zero, well

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then the game should stop and it should print "You lose."

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So let's add another if statement in here that checks whether if the number of

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lives is equals to, double equal to, zero.

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And if this is the case, then we should exit the game. And remember to do that

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we need to exit the while loop.

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And the while loop is dependent on this variable end_of_game

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which starts out being false. And when we want to exit the game,

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when it is in fact the end of the game, we switch it to true. Like,

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for example, in this case, when the user has won. So here,

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when the lives is equal to zero, we can say, end_of_game = True,

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and we're going to print "You lose."

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So that's all that's needed to tackle to-do number two.

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So now let's run our code again.

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And you can see that if I keep guessing the wrong letter six times,

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then eventually I exit out of my while loop.

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You can see my prompt showing up again.

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And this means that we've now come out of the game and it's told us that we've

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lost.

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So now all we have to do is tackle to-do number three.

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We have to print the ASCII art from the list called stages

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that corresponds to the current number of lives the user has remaining. Now,

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luckily for you,

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I've arranged each of these pictures in descending order of lives.

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So when you have a full six lives,

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the image at index six is the starting image.

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And when you have no lives,

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so the image at index zero is the one where the hangman is fully drawn.

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So all we have to do down here is to simply just the print

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the stages,

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and corresponding to the current number of lives.

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So we put lives inside the square brackets.

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And now if we run the code again and we keep guessing,

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you can see that we're going through our hangman picture until we are fully

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drawn and we lose and it's the end of the game.

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Have a quick review of the solution

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and if you want to see this code that I've written,

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then as always, head over to the course resources,

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and you'll find a link to Day-7-Hangman-4-End

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and you'll be able to see all the code that I've written in there, including,

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um, helpful things like a print statement that you can activate,

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which just shows you the current position,

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the current letter and the letter that's being guessed.

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So you can see as the loop is going on

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what's actually happening and it'll make it easier for you to debug any problems

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in your code. So if you had any problems in the code that you wrote,

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this is a really useful line to be able to help you debug what's gone wrong.

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Hopefully you manage to do thi okay,

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and once you've had a quick review and you're happy with everything that's been

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covered in this lesson,

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then head over to the next lesson and we're going to complete the final step,

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step five of our hangman project.