WEBVTT 00:01.280 --> 00:02.280 Hello, everyone. 00:02.570 --> 00:09.680 In this particular session, we would be discussing about follow up on Vinu, so first we need to know 00:09.680 --> 00:13.420 what is actual need of these moves and what are loop's. 00:13.940 --> 00:20.870 So here I have a piece of code where I have created a list of names. 00:21.200 --> 00:25.100 So I have address John Tokyo and Berlin. 00:26.240 --> 00:35.020 Now let's say you want to display the names one by one and we want to say hello, hello. 00:36.070 --> 00:37.370 Hello, hello, Tokyo. 00:37.820 --> 00:40.520 So let's just run this. 00:41.770 --> 00:51.100 So here, if you see the outrage over this entire list and we are taking one index of the list at a 00:51.100 --> 00:59.920 time and then trending this now while doing this entire thing, first of all, I had to type all the 00:59.920 --> 01:02.680 lines of code again and again. 01:03.740 --> 01:08.430 And I have just five lines of code, which I had to write here. 01:08.690 --> 01:16.850 So it was a little simple for me, but let's say instead of these five means, we have five hundred 01:16.850 --> 01:17.320 names. 01:17.630 --> 01:25.160 So in that case, would it be feasible for me to type in Palo and then names again and again? 01:25.160 --> 01:26.240 Five hundred names? 01:26.510 --> 01:26.760 No. 01:26.780 --> 01:27.060 Right. 01:27.200 --> 01:29.160 It would be pretty difficult for us. 01:29.510 --> 01:33.730 So this is where we need four or you. 01:34.990 --> 01:43.840 What this actually helps us in, so here we are able to iterate over a particular object, so that could 01:43.840 --> 01:44.990 be a list. 01:45.520 --> 01:47.110 It could be a string. 01:47.260 --> 01:48.640 It could be range. 01:49.920 --> 01:51.910 I'm and I read on top of it. 01:53.460 --> 02:03.570 And we can use one item out of the entire sequence, one by one on this play or whatever action we want 02:03.570 --> 02:03.900 to do. 02:04.140 --> 02:08.340 So here what we can do is we can trade over the sequence means. 02:08.580 --> 02:15.170 So when we will agree to work, we will get the name Horia first, then we can print it. 02:15.360 --> 02:20.620 Then the next value would be SANZAR, so we can trade on top of it. 02:20.820 --> 02:23.260 So let us see, what is this index for that. 02:23.910 --> 02:27.390 So this index for Falu would be for. 02:28.400 --> 02:29.720 Then we write. 02:33.050 --> 02:34.940 Obviously, you've seen me. 02:36.120 --> 02:42.810 In names, this is the list which I want to I try to wear so I would see names. 02:44.160 --> 02:45.510 Then I give the Colin. 02:46.700 --> 02:56.120 I hit enter and the automatic indentation comes in, so again, just like if as we need to provide information 02:56.120 --> 03:00.600 in for loop also, so we will provide this indentation. 03:00.890 --> 03:04.790 Now, this name is just a very boobage I have created. 03:04.970 --> 03:06.650 I can give it any value. 03:06.650 --> 03:14.410 I can give it IGP or any other name or some name, any kind of variable could be created. 03:14.420 --> 03:18.230 This does not this is just a dummy name so we can give it anything. 03:18.240 --> 03:20.690 So I will use name now. 03:20.720 --> 03:22.670 I will just say print. 03:24.480 --> 03:25.140 And. 03:26.150 --> 03:28.640 I will say hello. 03:29.600 --> 03:30.560 Space. 03:31.500 --> 03:33.120 And I would say name. 03:35.850 --> 03:36.510 And. 03:38.500 --> 03:46.090 One said on this, I get the entire thing again, so instead of writing the lines again and again, 03:46.090 --> 03:50.360 I can do the same thing by just writing a single line of code. 03:50.920 --> 03:53.600 So this is what Falu provides us. 03:54.070 --> 03:56.990 So let us see, what do we have here? 03:57.490 --> 04:04.780 So the for loop, I agree to a sequence of items and runs a statement for each item. 04:05.620 --> 04:12.230 Once the items are exhausted, it stops the loop and runs the next line of code. 04:12.580 --> 04:14.200 So it would stop it. 04:14.200 --> 04:19.000 Would it read over an entire sequence and pick out the items it will best? 04:19.180 --> 04:20.470 That is the sequence. 04:20.480 --> 04:27.730 And so if the sequence is not and B we still have some items, then it will run the statement book and 04:27.730 --> 04:32.290 then go back to the for loop and figure out the next element in the sequence. 04:32.530 --> 04:40.810 It will decide if the sequence is empty, then it will get out of it, otherwise it will keep iterating. 04:40.810 --> 04:41.620 I'm doing this. 04:41.620 --> 04:44.740 We exhaust all the elements which are present in the sequence. 04:45.520 --> 04:49.850 This is how for Loop works and we have seen the syntax for it. 04:50.140 --> 04:53.920 Now let us see what type of values of all look inside. 04:54.730 --> 04:57.310 So first we will look for a string. 04:58.610 --> 05:01.820 So it does have a spring save for. 05:04.260 --> 05:07.050 I do or see. 05:08.730 --> 05:09.330 Gary. 05:10.640 --> 05:14.570 And let's give any string my. 05:15.760 --> 05:18.250 My name is. 05:19.630 --> 05:20.380 John. 05:21.870 --> 05:25.230 OK, this is the string which I have and. 05:26.130 --> 05:28.280 I would simply say the same thing. 05:32.770 --> 05:33.520 Brent. 05:35.980 --> 05:36.520 Gary. 05:38.010 --> 05:47.820 Plus, let's see anything, let's say one, two, three, OK, so we can run this and it will just stay 05:48.120 --> 05:52.890 and display whatever we wanted related to what each and every character of the string. 05:53.930 --> 06:00.650 Why is it trading on each and every character of the string, as you already know, a string is a sequence 06:00.650 --> 06:01.760 of characters. 06:02.030 --> 06:05.640 That is the reason why it was able to I on top of these. 06:06.130 --> 06:10.820 Now, I can give any number of code of lines here. 06:11.150 --> 06:16.880 I can see friend one plus. 06:17.870 --> 06:24.140 To then it will again do this, I can have another look inside this. 06:25.840 --> 06:27.010 For, let's say. 06:28.550 --> 06:30.530 I am. 06:33.230 --> 06:38.130 Hi, and then we save print. 06:38.780 --> 06:45.620 So if you can see we are nesting the for loop again, so we'll just rent I, I. 06:47.240 --> 06:48.090 Let's see. 06:49.070 --> 06:55.790 So it is printing the character first, the character plus one, two, three. 06:56.150 --> 07:03.140 Then it is printing this three which we have made a before and after that does it reading on top of 07:03.140 --> 07:04.600 the characters in high. 07:04.910 --> 07:06.890 So it does printing etch and then. 07:07.910 --> 07:12.130 So this is how we can it on top of characters of a string. 07:12.530 --> 07:17.610 Now we have already seen how we can iterate on top of elements in the list. 07:17.990 --> 07:22.550 Now let us see how we can I trade on numbers on predefined numbers. 07:22.880 --> 07:24.260 So let us see. 07:25.280 --> 07:28.250 First of all, let me introduce range to you. 07:29.620 --> 07:30.790 So for. 07:33.160 --> 07:36.940 Well, in range. 07:41.530 --> 07:48.470 So I'm running this on range then, and I will simply print the world for you. 07:49.210 --> 07:50.650 So here you see. 07:52.320 --> 08:01.680 The value is being printed, so it is trading on numbers from zero to nine. 08:02.100 --> 08:07.690 So if we give range then so it will go from zero and the split in values. 08:08.040 --> 08:09.150 Now, let us see. 08:09.160 --> 08:13.530 We want to start from let's say. 08:15.390 --> 08:17.940 Twenty and more than. 08:20.930 --> 08:21.920 Twenty five. 08:23.530 --> 08:25.750 Then here it is. 08:26.220 --> 08:33.330 Now, let us say we want to skip a few numbers in between so we can give the step function also here 08:33.340 --> 08:37.210 to simply walk like the slicing, which we have. 08:37.540 --> 08:39.400 So it is simply like slicing. 08:39.790 --> 08:44.940 We give the starting point, then we give the last value minus plus one. 08:45.250 --> 08:46.850 And this is a step function. 08:47.560 --> 08:49.510 This is this. 08:49.510 --> 08:55.960 Now that is one more thing which we need to include, which is including continue. 08:56.140 --> 08:58.570 So let us see how we can continue. 08:58.840 --> 09:02.200 So let us say we are working on. 09:03.520 --> 09:04.320 This particular. 09:05.680 --> 09:15.250 This particular look, now let's do one thing, the letters include a new value here as count. 09:16.640 --> 09:17.450 And. 09:18.620 --> 09:22.580 We made this count as zero and after each law. 09:24.100 --> 09:33.580 We will change the value of pound is equal to pound plus one, so we are increasing the value of pound 09:33.580 --> 09:35.500 after each iteration. 09:36.040 --> 09:38.860 So let us do one thing now after this. 09:41.630 --> 09:44.180 Let us bring county instead of this. 09:45.600 --> 09:51.420 OK, now let's check a condition for an itch, so. 10:03.440 --> 10:09.260 Sound is greater than, say, six. 10:14.780 --> 10:17.270 Then we are doing all. 10:19.650 --> 10:20.330 Continue. 10:23.310 --> 10:31.290 Now, what continue does is that whenever we encounter a condition, whenever we encounter continue, 10:31.830 --> 10:42.510 then it will not run these lines of food and it will simply go back and. 10:43.910 --> 10:46.400 Continue with the vibrations. 10:47.700 --> 10:50.850 Let me do one thing, let me please the council before. 10:51.940 --> 10:52.570 Continue. 11:00.200 --> 11:01.880 So let us run this. 11:04.760 --> 11:08.350 So here what happened is it is trading on the perfect. 11:09.340 --> 11:10.090 So. 11:11.410 --> 11:14.260 It has not increased the volume. 11:17.180 --> 11:21.020 Now, let me put it above that if condition. 11:26.830 --> 11:30.070 And let us keep it till three for convenience. 11:32.720 --> 11:41.880 So it is printing and then it is having volume zero down, volumes one, this is two, this is three. 11:42.200 --> 11:44.630 So when the pound value is three. 11:46.240 --> 11:54.150 This is here, the ground value becomes three, so it will check that its value is greater than three, 11:54.580 --> 11:56.030 then it will continue. 11:56.290 --> 11:58.930 So it is not printing high after this. 12:00.730 --> 12:06.580 Now, let's say they don't want to bring these values, also, we just want to break the loop and come 12:06.580 --> 12:10.180 out of it once the value of golf is greater than three. 12:10.390 --> 12:16.660 So instead of writing continue, we can simply write, break and dig the new. 12:17.620 --> 12:22.030 So here it has written for us. 12:26.270 --> 12:35.180 Now, let us discuss about why you saw the difference between four and why was that in case of violence? 12:35.330 --> 12:43.760 We are tripping on top of an entire sequence, but in case of violence, we see why and devalue the 12:43.760 --> 12:44.920 particular conditions. 12:44.960 --> 12:49.690 The account is less than five. 12:51.200 --> 12:55.010 Then he wanted to do something, then we wanted to. 12:55.990 --> 12:56.700 Brent. 12:58.320 --> 12:59.670 The value of count. 13:00.830 --> 13:05.240 And after opening day, we wanted to update the value of ground. 13:11.650 --> 13:15.980 Let me we sure initialize the value of found. 13:18.610 --> 13:20.730 So here. 13:21.720 --> 13:29.390 We are running this, so it will start with ground value as it evaluates the value of so here the value 13:29.400 --> 13:30.780 found is less than five. 13:31.110 --> 13:36.990 It brings the value of ground and updates the value of found to and then again, it goes back. 13:36.990 --> 13:44.310 It checks that the value of gold is less than five and it keeps doing that until the account value is 13:44.310 --> 13:45.240 equal to five. 13:45.660 --> 13:47.940 So this is what value looks like. 13:48.300 --> 13:50.200 The index is just the same. 13:50.580 --> 13:52.100 So we see why. 13:52.410 --> 13:58.250 Then we give the condition and then we give the colon and we give the indentation. 13:58.680 --> 14:04.620 Similarly for for loop the give for the give the items on which we want to intrude upon. 14:04.980 --> 14:13.590 We give the sequence, then we give the sequence details that it is a range or if it is a particular 14:13.590 --> 14:18.360 list of characters or if it is a list, it says. 14:19.680 --> 14:29.400 So this is how life works now, apart from this vital condition, we can also have white ants in other 14:29.400 --> 14:30.050 languages. 14:30.060 --> 14:34.110 We do not have the option of else, but could increase survival. 14:34.140 --> 14:35.820 We also have violence. 14:36.210 --> 14:38.010 So let us look at the. 14:40.490 --> 14:49.700 So for Vilo, it repeatedly executed a bluff of food indefinitely a number of times and until the human 14:49.700 --> 14:51.110 condition becomes false. 14:51.290 --> 14:55.550 So here we were checking the condition that this count is less than five. 14:55.550 --> 14:59.390 And once the condition becomes false, it comes out of the way. 14:59.400 --> 15:06.730 You now, invitingly, can add an optional clause after the end of the view. 15:07.070 --> 15:12.830 So we can add as fills the code inside the as clause would always run. 15:12.840 --> 15:23.000 But after the you finish execution, the one situation when it will not run is if the loop exits after 15:23.000 --> 15:23.470 a break. 15:23.480 --> 15:24.200 Stay tuned. 15:24.770 --> 15:29.740 So let us go back to let us add is the mission. 15:30.440 --> 15:34.480 So is why golf is less than five. 15:35.240 --> 15:42.020 It will bring this, it will update the calendar and then the goal is not less than fine. 15:42.530 --> 15:43.580 It will print. 15:53.610 --> 15:54.930 The very influential. 15:58.560 --> 16:08.970 So this so it initially ran the ground, it didn't run from zero before that, and after that it will 16:08.970 --> 16:09.990 run the S.T.. 16:12.160 --> 16:15.260 Let us make the value of count is equal to five. 16:15.280 --> 16:22.660 So in this situation, the count will be equal to five, so the condition will not satisfy and this 16:22.660 --> 16:24.250 will never become to equal that. 16:24.260 --> 16:25.210 It'd be false. 16:25.690 --> 16:27.540 So let us try this one. 16:27.790 --> 16:29.990 So here the number is greater than five. 16:30.010 --> 16:31.960 The value runs. 16:32.230 --> 16:34.140 It is a false condition. 16:34.150 --> 16:38.020 So it does not run this be supported by Tehran and its condition. 16:38.710 --> 16:41.470 So this is what VIU is.