WEBVTT

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so what we need to do now is implement the deal_ dealer function now this

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turns out to be very similar to the deal_player function but because

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the players turn has finished by the
time the dealer gets more cards what we

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can do here in this function is we can
add a bit of extra code to check to see

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who is actually won the game because of
course the only check we got at the moment

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is on line 69 to check to see whether
the dealer wins so we need see whether the

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player wins as well we need more details
in addition to that because the moment

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we are only really basically checking to
see at the moment if the players busted if the

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scores greater than 21 could be a situation of
course we're both a dealer and the player got

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cards less than 21 we need to do
that check as well as well as checking

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to see whether the dealer is busted so lets make a start so go up here and start

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typing....

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...and we need to add the score so dealer.....

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....and then we

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want to show that on the screens so.....

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.....and we now need to do some
checking to see whether it's game over

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so what we want to do first is get the players score
again so....

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....so what is the score for the
player currently then would need to do

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some testing here to see who's won or if anyone has won so.....

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....

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....

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...which may already been set on line 76 but we gonna put it

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here anyway just in case we need to
put...

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....so either way the

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dealer is lost in this situation then the
player won so put.....

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.....

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...so we already establish
the both the player and the dealer

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haven't gone busted at this point
because we've done those checks on line 66

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and 68 so we know that they're both
less than 21 so now we are

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doing a test to see whether the dealer
score is greater than the player score

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then we are going to put....

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....can you think what that
last possibility is well the last

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possibilities is a draw we've done everything else we've done all the tests to see whether both the player and the

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dealer had gone bust or whether the
players score or the dealer score is

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greater than 21 or the dealer scorer is less than players score so we have determined that

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the player can win as well and anything
left to do is going to be a draw so......

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....because obviously if both score is the same if it gets to this
point that should be our method so it's

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really quite simple no matter what the
dealers score is if the player went bust

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and the dealer wins so that's the
first condition tested if the players

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not bust the player wins if their score
is higher than the dealer or the dealer

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went bust and obviously we get down
that last else on line 72 any outcome means a draw

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alright so we should have the basis for a
game here so lets run this and see what it does

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so let's see whether it actually works
we are gonna put dealer well will actually do the player first the

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players got an 11 an ace which is
scored 11 which

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is correct for the first ace dealer its got a 10 and according this the player has won

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and we continue on player dealer and its still not quite working at this

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stage but we've got the basis on here its
actually doing some basic calculation

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but obviously we need we still need to
do a bit of work here because when we first

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started it and I'll just run it again player dealer we are getting a message immediately that

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the dealer wins because the score was
greater than the players so its a lil bit

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disconcerting that because that message shouldn't really
be appearing until the dealer has finished

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playing or player has gone bust so it's correct it's actually processing this

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function correctly but we need to
actually put an extra condition in to

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have the game go as far as it can before it actually
showing who wins so I guess it'd be

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more accurate to say that deal is
winning so far this point in time click on

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player again and obviously we got a bit of work here to do still so let's go ahead and continue

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looking at this so one advantage of
creating functions that perform specific

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tasks is that they can be used whenever
you need the functionality that they

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provide and we saw an example of
that with score_hand which we

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used in a number of places which
is pretty handy that we only written that

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code once and we are able to call it multiple
times so in the main program we really

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don't want the dealer to play they turn as their initial cards are dealt we just

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just want them to deal a card and stored
in their hands so what we gonna do is

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make a change their go down to the bottom so after
here after the deal_hand we

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are setting up those entries to be empty

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where we are starting after that we want to put.....so

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the player gets the first card automatically and.....

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....

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..so what we want to deal player again so we want to deal first basically the player is gonna get two cards which

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is how blackjack works and the dealer
is going to have one and if we run that

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again lets see what that looks like so its definitely getting better now we haven't got any initial scores showing up we got the

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correctly showing the player score to be 13 we got a problem here though the

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dealer score is showing 0 for some
reason so it could be a bug or something

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that we've introduced here because the dealer score should be

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calculated and it should actually initially
be 9 so its getting better but its still not

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correct yet because the person playing the
game has to click the button for each of

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the dealers cards and once we clicked it
then incorrectly does the score but it didn't do

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that initially but we wouldn't
ordinarily want that to happen the

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computer should really play the part of
the dealer and all the player should do is

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click their own button for more cards or
click dealer button once they want to stick

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so the deal_dealer function
that's called when the dealers

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button is clicked will need to score
the dealer's hand which only has a

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single card to begin with and then
automatically keep dealing more cards until

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the dealer score is greater than or equal
to 17 or the dealer goes bust and once

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that has happen the score are then check and
the results are displayed so let's go back

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and make a change to the code for that on deal_dealer function so we

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got the dealer score calculated correctly so
what we gonna do is I'm going to temporarily

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cut that because we're gonna put that
back on some code in a minute so the dealer

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score so its calculated at first then
what we want to do is put.....

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....

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...so in other
words basically what a dealer score is 0 or less

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than 17 and remember we establish the
rules that if scores less than seventeen

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the dealer would
automatically grab another card and that is what

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we do with that code

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and then the other thing we need to do is after we've
appended we then calculate the score again so come back

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down here will copy this bit of code put that in
there and then we actually show the score

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on the screens so basically what
happened is we got to deal_dealer

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it should automatically keep dealing
cards for us until it gets to score of

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17 or higher and obviously it could still bust and
then the rest of the code will be executed

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on line 67 down and we can establish
whether there's been a win or a loss and

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the reason on line 61 were actually
calculating the score there is we are

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dealing with the the score for the card
that's initially dealt when we first

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start because you saw that when I ran this the previous time the dealer score

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showing a 0 so that's why we are calculating that score first and then were actually

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adding the score each time another cards dealt
so looking down the code we've got the

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code down here so we got deal_player which draws the player card deal_hand

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.append which actually called the dealer_card function to

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deal the first card of the dealer and then we deal the card for the player again

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so what should happen now is that
we'll see two cards for the player and

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two cards or more for the dealer
depending on what the score was so lets try running

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then see what happens

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so now when we click dealer you notice how it went through and automatically selected the extra cards so

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what basically won the game at that point and we got
no play again button at the moments so we need to

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stop and start again and run again you can
see the dealer has got 18 compared to 9

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now its still not really working correctly
because what we really need to do is

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change this run it again so basically its the
wrong button that I'm actually pressing so we got the score

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their players got a score of 19 at the
moment so if we want another card we

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click on player to get another card and obviously we didn't get a bust we got to 21 so the dealer now when we click

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the dealer button once and it's going right
through and finish the dealer shot and

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that's really the point I was making the
player wins because we've got to

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seventeen you remember the score has to be less than 17 otherwise it would keep

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dealing another card so we got to 17 at that
point we actually won so will try it

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again ok we got a score of 16 we are gonna click on player
again to get another card and obviously

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we've gone bust so we gone over 21 so the
dealer has correctly won their so

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that's good that's also working run it
again

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just run it a few more times to make sure
it's working correctly

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we got a score of 14 lets click on trying another
card we get to 20 which is good so let's

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now click on dealer and see what the
dealer does the dealer got to 25 and the dealer

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busts so player wins

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ok try it again and see what I hope we can
get a draw here just to confirm that's

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working as well so player got a score of 14 player I've busted the dealer wins that's correct

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ok score of 17 I'm gonna hold on that so click on dealer and
the dealer wins with a score of 21 so I'll

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try one more time to see whether we can
happen to get a draw but you can see all the other are working

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now so run that one more time

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with a bit of luck will get the score being equal so
we got a score 15 I'm gonna stick to that

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so I'm just going to click on a dealer and
the player wins because the dealer bust so

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I won't do that but basically the code
should work for the draw we've seen all

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the other scenarios what seems to be
working correctly which is great so the

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programs now playing a
reasonable game of blackjack and all the

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dealing is being taken care of by the
computer so it's a bit annoying having

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to close the window and run the program
again though for a new game and I think

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it's about time for challenges so will
talk about that and also talked about

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will also go through one more time about some
global variables comments that you might find

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interesting and then work on a challenge
and the challenges is gonna be for

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you to come up with a new game button start
a new game so we don't have to stop and

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start the game each time like you've
seen me do so we will look at doing that in the

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next video