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Hey everyone.

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So then we have created the buttons and just the working gift.

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So how we can make them vote like this one basic way.

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So for that one I'm adding a come on here.

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That is going to be C or double and me and D.

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And now we are adding something like show underscore symbol and X and Y relative to to win this one.

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Anita now we need to define that function so define show underscore symbol.

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And with X and Y.

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So what we do here right now is first we will provide this symbol.

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All the symbols that we have created to all the buttons the button that we have created and then we

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will check whether this symbol are equal or not.

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Now one thing I'm again and again think symbol and they are actually text.

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So I need to add here next.

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So first of all I will take to global variables.

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That is a first.

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And do more here that is previous x and previous y the same that we have taken there in the initial

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condition.

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Now we are going to apply this again.

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This one is just whether it is the first card or not.

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And these two if there is a first card then there are the coordinates of that one.

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So now I will provide every button to symbol sorry every button symbol.

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So I will take buttons my library sorted my dictionary that containing all the buttons that I have created.

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And the button symbol is containing all these symbols that I shuffle randomly.

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So what will I do here.

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I will write buttons and first access X and fly so in this way I'm accessing every each of the button.

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Now to access is text I was a straight again square brackets and in them text.

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This is how I can access the text on button and make them equal to here.

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Now you need to pass symbols so buttons symbols and the symbol with every particular accent by I'm getting

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because I am making symbols pop again and again whenever I am making X invite so for each value of x

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and y I'm hoping something.

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So that's how I can add this symbol to any button no symbols are added one more come on.

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You need to add here X and Vi and their bus update underscored ideal tests.

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So this one just updated dusk so David now we are done with creating the buttons with their particular

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symbols.

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What after that.

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Now a second problem here is if they match then developments in and if they don't then again flip or

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not what the Flipboard here I'm referring to.

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So basically the flip or I'm here traveling to is just like if remember the caterpillar how the game

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will be game over.

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I remove the caterpillars or the leaves I just change the color with the same like background.

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Now flipping means I will just remove the dust.

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Sorry to text and then David in the thing.

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So it seems like for people so that so I can flip the buttons old state God's so let's begin the deadman.

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One more thing before that one we need to make sure that whether there's a first card already flipped

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over or this is the first card.

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So if this is the first card then it will stay same light.

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So let me show you this one with matchmaker.

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So if this is the first card then it will remain in this position.

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So this is something I need to take care of.

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And if it is second car then only in that condition it will check that whether that's equal or not so

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two conditions here.

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If this one is first so what will happen in that case.

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So if there is no card already done then this my first card is going to be a previous card for the next.

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So what will I do.

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I will write her previous x equal to x

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and previous y equal to y.

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I think you will get this thing that what I have done here that it is the first card I will make this

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one as the previous because I require this one in the same condition and after that one make first equal

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to False.

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Otherwise the program will again take this one as my first card.

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And again do the same.

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Now first is false.

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Now it will automatically go for the next commander.

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Later on the program again.

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So the second come on I added Elif that whether this is a first card or not.

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Now at this position we are at this particular position right now.

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We have a first card already done and we are going for a second car.

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But one more thing here.

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What if the user just click the card that is already flipped over.

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So what to do at that particular condition so we need to make sure that the user is not clicking the

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previous cart.

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So that's why I have included.

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I live here and have it right here.

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Previous X not equal to X or previous Y Not equal to y.

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So in that condition it will begin so after that one.

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Now we are in this situation that user is clicking any other card except this one.

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So I am clicking these these these or these flights.

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Now I am in the position when I need to check whether the card is same or not.

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So let's check that one.

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So first condition if that is not seen.

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So if buttons for particular X and Y.

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First I will write the previous index and previous y the previous card I have and it's text

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is not equal to the buttons that I have right now.

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So buttons right.

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No I have x y and there next.

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So if this is the condition then what will happen in that case.

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Just a very small time.

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I am not slave for zero point five seconds set so that user cannot see the card.

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That is the next day.

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And what will I do.

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I would just flip them again.

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So buttons of previous entries X and previous y previous fly and their text will became empty string.

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Now this is the same thing like the changing the color of Caterpillar as the background.

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I have just removed the text.

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Now few students are thinking that what if I have removed the text.

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How will I again get the symbol done so for that cronies.

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That's why I have included these four commands in the function because whenever the function sorry button

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is cleared it will again call that one and provide the particular button their particular symbol.

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This is the reason I have not included them here because in that case was the card is flipped over the

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symbol will be go so I hope you understand that thing no.

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Hey I have just taken all them in dictionaries and there I have provided them.

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Now after that when we are done with this one one more here.

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That is extra.

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The current cards so buttons and parsed it exclude my wife and their text.

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And this unequal to an empty string.

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So there we go with that one.

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Now we have the as condition so as is automatically the one in which we have.

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These are same.

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So what will we do in that condition is we will use this visible come on how we will adjust buttons

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of previous x and previous y first previous x previous y.

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No.

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That one day we had previous white and.

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Come on.

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So the square brackets and come on.

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So this is a new way I am using here to access the text and the man because till now we are just writing

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them here inside the buttons when we are declaring.

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But Wendy Button is already clear.

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You can access them by this thing.

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So the command will be disabled so once the command is disabled the button will remain in the same position.

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Now buttons for current x and y and their command.

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So command and that will also be disabled.

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There you go.

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And after that one when this is a second card make the first one equal to.

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So that again the first card will remain in the position when I click that one.

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Otherwise that will again do something like No flipping.

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So there we go with that one but there is one more thing required in our program.

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Like now when you tried to run this one let me have this one one though.

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There we go.

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When we done that one day you get the error and the added you will get in this line that is here.

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We have 42 but if you look at this one then all the things are saying sorry.

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Correct.

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So how to edit we are getting it.

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So there is a very simple concept and a simple answer for this one but little typical to understand

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and what that is like.

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Look at this one.

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Whenever I got any position say zero and zero.

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I got this into a button and it will make command for that particular x and y and it will go to the

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function that is calling this one and it thinks will work but when another command came when I am clicking

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another particular value there.

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And this one is calling the x and y.

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In that case the same X and Y will value will be transferred to that one.

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That's why we are getting here key at 0 0 because the first come on.

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That is 0 0.

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We are getting zero value for x and zero for Y is going to be parsed again and again to that particular

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function because I am clicking the button by using the loops.

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I am just creating the button clicking the button is a different thing.

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So when I click or create all the buttons here then they are created once but the button command will

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work whenever I click them.

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It means that they will always be zero 010 so that something how we can resolve them.

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One answer for this one is don't use loops just provide 24 times these four commands and provide particular

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value for x and y but that will something will make our program too long and it will take a lot of time.

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So how to do that.

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The answer for that one is what I will do here.

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I will add another function to come on I will use to function here one inside of the another what the

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first function will do.

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It will store all the particular values for x and y that I am getting at that particular instant like

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if it is this one is 5 5.

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Then it will first store the values 5 and 5 and then it will call the second function with that particular

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values 5 and 5.

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So I hope you get that one more time seeing again in a very simple way.

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Once the buttons are created the all and having the x and y value zero and zero because creating buttons

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is a different thing and pressing button is a different thing.

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They are not the same but so be sure about that one.

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Now how can I add a different function here.

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So they already met various methods to our particular functions here and call the function inside that

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one.

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What I'm using here is a very simple concept that is known as Lambda Lambda functions.

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This is a very basic concept and we have not got this one in the course it goes.

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This one is very little and did not require much time to understand.

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So this is something I can just write lambda and is used only when I need to declare functions in only

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one line like lambda provided x and y and write the function z is equal to x plus y so there is something

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here we have defined very long functions.

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You cannot define very long functions by using lambda.

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So you can just define functions in line.

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Let me show Dedmon here.

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I'm going to define a lambda function and what that will do.

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It will first take the value of particular X and store this one in x.

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So I'm using the same variable x in x and another valuable y that restored the particular value of y.

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So now I have x and y values stored in particular X and Y then the dot nodes mean what will happen then.

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So in that one it will just call this function shows symbol.

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So I have just righted here something like.

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Define that particular function that will take the values and call this one.

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But there's something we can do here.

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We have to define that function there.

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So to define that function in line we use this thing lambda and then X equal to X Y equals Y.

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Just this very simple thing and I hope you get this thing that what I have done him and then show symbol

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I have called that function.

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Now we are ready with a program.

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We will get the big cards with very small symbols that we have created him.

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Also the symbols here we have created are small.

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We have changed the size of card but we will not get these large symbols of the symbol size same.

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So now when I run this one I will get by output.

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So nothing we have just changed.

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We have just added this line and confuse to read it.

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This will make no sense like what I am doing here.

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I'm just doing X equal to x like worldwide.

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But that's very important.

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Without that one your program will look what.

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Now let's check the walking.

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I go to the first car.

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And it reminds him I click the second one they disappear this one and let me find a match.

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There they go.

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When we go to the match we had the same.

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They are not changing their position so everything is I believe working fine there we go.

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Cesar I think we have this one so we are done with another project here.

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And I hope you understand this wondered how the things are working here how the lambda is working here

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and this is about discipline you can make them all match lifting to this one.

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So this is all about discipline and it's a very little project but contains a lot of topics and lot

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of things that makes your things clear.

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So thanks for watching.

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I would see in the next module.