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OK, in this video, we want to clear our answer box and generate new random numbers.

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So let's go ahead and take a look at this.

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Let's come over to our ad correct function.

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So when we've after we figured out whether or not the answer is correct or not, let's go ahead and

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clear the answer box.

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And to do that, let's see, what did we call the answer box?

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It was ad answer.

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We can do.

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Entry boxes have a function called delete.

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And they take a couple of arguments, the first is zero, and then the second is end.

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Now.

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Think of an entry box and you type into it the things you type into it.

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Kantor treats that as a python list and what's the first item in a python list?

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The first item is zero.

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So whenever you enter into into the entry box, that's the zeroth item of the entry box list.

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So we have to designate we want to delete that.

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Whatever you typed in the box to end.

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Well, let's take this and run it just to make sure that worked.

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So here we have our six plus four equals, let's say 12.

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So 12 is the zeroth item of this entry box, right, boom, incorrect, six plus forest and not 12,

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you idiot.

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And our entry box is now empty again.

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OK, so that was super easy.

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Now we just need to generate new random numbers, and that's fairly easy as well.

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So let's put our code back up and just blow here.

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Let's generate two new random numbers so we already have our random numbers there.

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NUM underscore one and num underscore two down here and there in VARs so we can set them any time we

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want and when we set them they should just auto update because that's what set does.

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So let's go num underscore one.

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Well actually.

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Let's just come down here and copy this again, why type when we can copy and paste?

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So this will generate new random numbers.

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No, I misspoke.

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They won't generate they won't flash up on the screen automatically, we can save this and run it just

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to make sure, but we're gonna have to do a little bit of coding to make that happen.

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I believe what I was thinking when I said that just two minutes ago.

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Yeah.

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So I didn't actually change.

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So we got to we got to update that.

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No big deal.

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So if we come down here and look at our original thing, right.

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This ad flash, that's where we're outputting the random numbers that we generate.

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Remember, we've put as font Helvetica size 30 to here it is and I'm one.

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I'm too right.

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So we can just probably grab this whole thing and copy it and then just come back up to our ad correct

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function where we've generated generated our two new random numbers and we can just redefine that.

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But instead of calling label, we want to update this so we can do our config trick and we don't need

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to put a frame.

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We just need to designate what the text is going to be, which is this.

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OK, so now this will automatically update it, just like we automatically updated these to add correct

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labels earlier.

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So, all right, let's go out and say this and run it.

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Hopefully that made sense breeze past that a little quickly, so one plus three equals one hundred twenty

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three.

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Incorrect.

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Something happened we didn't update.

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So let's see what er add flash is not defined.

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I bet I forgot to make it global.

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So let's come down here.

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You add flash.

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This is the original add flash in our original add function.

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We need to call this a global so that it can work anywhere and underscore flash I guess for flashcard.

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I don't know why we named it that.

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I'm bad at naming things.

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We haven't figured it out like right up here.

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Output answer.

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Correct.

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That's a terrible variable name, but whatever name of anything you want, I'm bad at it.

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OK, so clear.

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And let's run this again and hopefully that should work now.

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So add three plus eight hundred twenty three.

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Boom.

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Incorrect.

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Three plus eight equals eleven, not one hundred twenty three.

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Now we have five plus eight, five plus eight is I think thirteen.

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Correct.

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Five plus eight equals thirteen boom.

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Five plus seven 42 incorrect.

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Five or seven is twelve not forty two and seven.

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Seventeen.

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Correct.

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And now it just works so.

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OK, I think we're pretty much done with our ad function now, we're putting this little thing down

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here at the bottom.

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Maybe that's kind of hokey.

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Maybe we want to make a message box pop up.

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Remember, we talked about message boxes way back.

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Instead of flashing this up on the screen, you could just make it a message box.

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That would be cool.

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I'll leave that to you and see this eight plus six.

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These variables is a little small.

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See if we bought this up to seventy two, what would that look like?

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Do it down here to just playing around at this point.

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Well this might look better.

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Or they might be way too big.

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Oh, I kind of like that, the triple seven eight.

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Yeah, I think that's probably a little bit better takes up more space or whatever, you could also

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create a status bar at the bottom to put the incorrect or correct answer down.

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There might be something you could do.

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Yeah, that might be fun, right?

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Anyway, I'll leave that to you.

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These are just aesthetic things, you can make this look anywhere you want, obviously, and pretty

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cool.

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So, OK, this seems to be working.

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Thirty four.

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Six.

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Yeah.

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I think for now, we'll call this ad function done, now we just need to do these other three, which

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should be pretty easy.

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We could copy and paste a lot of stuff and we'll start to look at that in the next video.