1 00:00:00,000 --> 00:00:00,000 Hello guys. 2 00:00:00,000 --> 00:00:03,000 So we are going to continue the discussion with respect to Python. 3 00:00:03,000 --> 00:00:07,000 And in this video we are going to discuss about our next data structure, which is called as tuples. 4 00:00:07,000 --> 00:00:13,000 Already in our previous video we have seen about list and we had written a lot of code. 5 00:00:13,000 --> 00:00:18,000 You know, if you probably I go ahead and show you we had written somewhere around 54 lines of code. 6 00:00:18,000 --> 00:00:20,000 We understood about list comprehension. 7 00:00:20,000 --> 00:00:23,000 We saw different different methods, operations and many more things. 8 00:00:23,000 --> 00:00:27,000 Now, uh, in this session, what all things we are going to discuss. 9 00:00:27,000 --> 00:00:31,000 So I have actually given you the brief outline of the video. 10 00:00:31,000 --> 00:00:35,000 First of all, we are going to understand about tuples, how to create tuples, accessing tuple elements, 11 00:00:35,000 --> 00:00:37,000 tuple operation. 12 00:00:37,000 --> 00:00:40,000 What is this immutable nature of tuples. 13 00:00:40,000 --> 00:00:44,000 And what are some of the, uh tuples common tuple methods that are used. 14 00:00:44,000 --> 00:00:48,000 How to pack and unpack tuples, nested tuples and all these things. 15 00:00:48,000 --> 00:00:51,000 We are going to see with a lot of practical example. 16 00:00:51,000 --> 00:00:57,000 Now before I go ahead, first of all, let me just give you a small definition about tuples. 17 00:00:57,000 --> 00:00:57,000 Right. 18 00:00:57,000 --> 00:01:02,000 So tuples are ordered collection of items that are immutable. 19 00:01:02,000 --> 00:01:02,000 Right. 20 00:01:02,000 --> 00:01:06,000 So we'll understand about this particular meaning which is called as immutable. 21 00:01:06,000 --> 00:01:09,000 If I talk about list it is an ordered collection of items. 22 00:01:09,000 --> 00:01:11,000 And the items can be of any type. 23 00:01:11,000 --> 00:01:13,000 And they are mutable right. 24 00:01:13,000 --> 00:01:16,000 But here it is something like immutable. 25 00:01:16,000 --> 00:01:18,000 They are similar to list, but they are immutable. 26 00:01:18,000 --> 00:01:20,000 Their immutability makes them different. 27 00:01:20,000 --> 00:01:25,000 Now first of all, we'll try to understand how to go ahead and create a tuple. 28 00:01:25,000 --> 00:01:32,000 So for creating a tuple right we have to just use this two empty brackets. 29 00:01:32,000 --> 00:01:34,000 So let me just go ahead and write it over here. 30 00:01:34,000 --> 00:01:36,000 So this is my empty tuple okay. 31 00:01:36,000 --> 00:01:41,000 And just by using this two brackets right I will be able to create it. 32 00:01:41,000 --> 00:01:41,000 Right. 33 00:01:41,000 --> 00:01:48,000 And if I go ahead and display the print, uh, let me first of all print this empty tuple. 34 00:01:48,000 --> 00:01:53,000 And then we will also go ahead and display our type of this particular empty tuple. 35 00:01:54,000 --> 00:01:54,000 Okay. 36 00:01:54,000 --> 00:01:56,000 So here you have this. 37 00:01:56,000 --> 00:02:01,000 If I execute this you can see this is an empty tuple that is getting created in list. 38 00:02:01,000 --> 00:02:02,000 We use two square brackets. 39 00:02:02,000 --> 00:02:05,000 In this we are just using this rounded brackets Right. 40 00:02:05,000 --> 00:02:09,000 And then over here you can see that I'm getting an empty tuple which is completely empty. 41 00:02:09,000 --> 00:02:14,000 And if I go ahead and see the type of empty tuple, it is nothing but tuple itself, right? 42 00:02:14,000 --> 00:02:17,000 Now if I probably consider list right. 43 00:02:17,000 --> 00:02:19,000 So list if I also use like this. 44 00:02:19,000 --> 00:02:20,000 Right. 45 00:02:20,000 --> 00:02:22,000 And if I go ahead and create an empty list. 46 00:02:22,000 --> 00:02:25,000 So I can also use this class directly and create an empty list. 47 00:02:25,000 --> 00:02:28,000 Okay, so this I missed in my previous video. 48 00:02:28,000 --> 00:02:30,000 So I'm just going to show it over here. 49 00:02:30,000 --> 00:02:36,000 And similarly if I want to probably create a tuple let's say this is my tuple, I can actually go ahead 50 00:02:36,000 --> 00:02:40,000 and use the same type of class and create an empty tuple. 51 00:02:40,000 --> 00:02:45,000 So both the ways I'm actually trying to show you so that you understand both these ways. 52 00:02:45,000 --> 00:02:45,000 Right. 53 00:02:45,000 --> 00:02:50,000 So here you can see when I'm seeing the type of this, this will be an list and this will be tuple. 54 00:02:50,000 --> 00:02:51,000 Right. 55 00:02:51,000 --> 00:02:57,000 So you can also use this um uh method in order to create an empty list or tuples. 56 00:02:57,000 --> 00:02:58,000 Okay. 57 00:02:58,000 --> 00:03:00,000 Inside this also I can put up elements. 58 00:03:00,000 --> 00:03:01,000 It is up to us right now. 59 00:03:01,000 --> 00:03:06,000 Let me go ahead and add some elements into this particular tuple okay. 60 00:03:06,000 --> 00:03:09,000 Now how do I add this particular elements. 61 00:03:09,000 --> 00:03:11,000 Uh uh inside this particular tuple. 62 00:03:11,000 --> 00:03:12,000 And uh how to do that. 63 00:03:12,000 --> 00:03:13,000 We'll be seeing a lot of methods. 64 00:03:13,000 --> 00:03:17,000 But here what I'm actually going to do, let me just go ahead and directly create a tuple. 65 00:03:17,000 --> 00:03:21,000 And if I go ahead and write tuple okay. 66 00:03:21,000 --> 00:03:25,000 And here I can actually give a list like 123456 okay. 67 00:03:25,000 --> 00:03:28,000 And now this list will get basically get converted into a tuple. 68 00:03:28,000 --> 00:03:34,000 So if I go ahead and display this numbers here, you can see that I'm actually getting a tuple right. 69 00:03:34,000 --> 00:03:37,000 So that basically means a list can be converted into a tuple. 70 00:03:37,000 --> 00:03:40,000 And even a tuple can be converted in a list. 71 00:03:40,000 --> 00:03:40,000 Right. 72 00:03:40,000 --> 00:03:45,000 So if I go ahead and basically write like this 123456. 73 00:03:45,000 --> 00:03:45,000 Right. 74 00:03:45,000 --> 00:03:48,000 So this is my uh tuple itself. 75 00:03:48,000 --> 00:03:51,000 And now if I go ahead and write list and I close this particular bracket. 76 00:03:51,000 --> 00:03:54,000 So here you'll be able to see that I am able to get a list right. 77 00:03:54,000 --> 00:03:55,000 List of elements. 78 00:03:55,000 --> 00:03:59,000 So both of the ways uh, you can basically do the type conversion okay. 79 00:03:59,000 --> 00:04:05,000 Now as I said, uh, in tuples also you can let's say I'm going to probably go ahead and create my mixed 80 00:04:05,000 --> 00:04:06,000 tuple here. 81 00:04:06,000 --> 00:04:09,000 Also you can use different different data type elements. 82 00:04:09,000 --> 00:04:13,000 Let's say I want to use numerical I want to probably use string. 83 00:04:13,000 --> 00:04:16,000 I want to go ahead and use a floating point number. 84 00:04:16,000 --> 00:04:19,000 I can also go ahead and use my boolean variable. 85 00:04:19,000 --> 00:04:19,000 Right. 86 00:04:19,000 --> 00:04:24,000 So now if I go ahead and print this then also this will get uh created. 87 00:04:24,000 --> 00:04:26,000 The tuple will basically get created. 88 00:04:26,000 --> 00:04:27,000 Okay. 89 00:04:27,000 --> 00:04:32,000 Now this is uh a basic information about tuple, how you can actually create and how you can proceed. 90 00:04:32,000 --> 00:04:33,000 Okay. 91 00:04:33,000 --> 00:04:35,000 Now let me do one thing quickly. 92 00:04:35,000 --> 00:04:40,000 Let me go ahead and explain you about the next thing that we are going to discuss. 93 00:04:40,000 --> 00:04:42,000 It is nothing but accessing tuple elements. 94 00:04:42,000 --> 00:04:43,000 Okay. 95 00:04:43,000 --> 00:04:45,000 Now for accessing tuple elements. 96 00:04:45,000 --> 00:04:48,000 What all things we really need to do that we will be discussing. 97 00:04:48,000 --> 00:04:48,000 Okay. 98 00:04:48,000 --> 00:04:50,000 Like I want to pick up any elements as such. 99 00:04:50,000 --> 00:04:52,000 So right now let me just go ahead and see. 100 00:04:52,000 --> 00:04:53,000 This is my numbers. 101 00:04:53,000 --> 00:04:55,000 Now here you can see that this is in the form of tuples. 102 00:04:55,000 --> 00:04:56,000 I have six elements. 103 00:04:56,000 --> 00:05:00,000 Let's say I go ahead and write numbers of zero okay. 104 00:05:00,000 --> 00:05:04,000 Or let me just go ahead and write it in the land line next line. 105 00:05:04,000 --> 00:05:06,000 So if I go ahead and write numbers of zero. 106 00:05:06,000 --> 00:05:09,000 So here I'll be able to see first element over here. 107 00:05:09,000 --> 00:05:10,000 This is my first zeroth index. 108 00:05:10,000 --> 00:05:12,000 I'm able to see it over here. 109 00:05:12,000 --> 00:05:14,000 Then I have two over here also. 110 00:05:14,000 --> 00:05:16,000 You can see I'm able to pick up this elements right. 111 00:05:16,000 --> 00:05:22,000 Similarly if I go ahead and let's say that I'm just going to print this okay I want to pick up the last 112 00:05:22,000 --> 00:05:23,000 element okay. 113 00:05:23,000 --> 00:05:25,000 Last element. 114 00:05:25,000 --> 00:05:29,000 Either you can directly write the index or what I'm actually going to do, I'm just going to use minus 115 00:05:29,000 --> 00:05:30,000 one. 116 00:05:30,000 --> 00:05:30,000 Right. 117 00:05:30,000 --> 00:05:33,000 So I'll be able to get the last elements again. 118 00:05:33,000 --> 00:05:36,000 Uh the indexing will be almost similar like a list. 119 00:05:36,000 --> 00:05:39,000 Even the slicing operation will be also similar, like a list. 120 00:05:39,000 --> 00:05:39,000 Okay. 121 00:05:39,000 --> 00:05:46,000 So let's say, uh, I go ahead and write numbers and here I'll write zero colon four. 122 00:05:46,000 --> 00:05:50,000 That basically means I'll be able to get the element between zero index to the third index. 123 00:05:50,000 --> 00:05:52,000 So same slicing operation whatever things we have actually discussed. 124 00:05:52,000 --> 00:05:58,000 Similarly, if I go ahead and write numbers with double colon right I'll be able to see it. 125 00:05:58,000 --> 00:06:03,000 If I go ahead and write double colon minus one, I'll be able to get the reverse of all the tuple values 126 00:06:03,000 --> 00:06:05,000 right, but the return type will be always tuple. 127 00:06:05,000 --> 00:06:11,000 Okay, so all the indexing and slicing operation that we have actually done with the help of list. 128 00:06:12,000 --> 00:06:14,000 Similarly, you can actually do it with the help of tuples. 129 00:06:14,000 --> 00:06:21,000 Okay then let's go ahead and see tuples operation tuple operations. 130 00:06:21,000 --> 00:06:22,000 Okay. 131 00:06:22,000 --> 00:06:28,000 Now tuple supports various operations like concatenation repetition and slicing okay. 132 00:06:28,000 --> 00:06:30,000 So we'll be discussing about that. 133 00:06:30,000 --> 00:06:33,000 Let's say I have numbers one tuple okay. 134 00:06:33,000 --> 00:06:38,000 And I had also created another tuple which is called as mixed tuple. 135 00:06:38,000 --> 00:06:38,000 Right. 136 00:06:38,000 --> 00:06:41,000 So this were the elements right. 137 00:06:41,000 --> 00:06:45,000 Now what if I just go ahead and write something like this. 138 00:06:45,000 --> 00:06:47,000 Numbers plus mixed tuple okay. 139 00:06:47,000 --> 00:06:51,000 So here in short this is an arithmetic operation. 140 00:06:51,000 --> 00:06:56,000 But since we have two tuples over here I will definitely say this as a concatenation, right? 141 00:06:56,000 --> 00:06:59,000 Concatenation basically means combining two things, right? 142 00:06:59,000 --> 00:07:04,000 So here you'll be able to see I will just go ahead and write concatenation underscore tuple. 143 00:07:04,000 --> 00:07:06,000 And I will just go ahead and concatenate this. 144 00:07:06,000 --> 00:07:14,000 Now if I go ahead and print this concatenation right concatenation tuple, you'll be able to see that 145 00:07:14,000 --> 00:07:15,000 I will be getting something like this. 146 00:07:15,000 --> 00:07:19,000 Now all this tuple both the elements of this particular tuples has been combined. 147 00:07:19,000 --> 00:07:23,000 So I have 1234, five six then one hello world 3.14 and true. 148 00:07:23,000 --> 00:07:27,000 Okay, now uh, let's say that I want to perform some more operations, right? 149 00:07:27,000 --> 00:07:31,000 Let's say I want to go ahead and write something like this, okay. 150 00:07:31,000 --> 00:07:34,000 Or repeated or let me do one thing. 151 00:07:34,000 --> 00:07:36,000 Let me just go ahead and create this. 152 00:07:37,000 --> 00:07:41,000 So I will just go ahead and do okay. 153 00:07:41,000 --> 00:07:43,000 Or I'll take this mixed tuple. 154 00:07:44,000 --> 00:07:44,000 Okay. 155 00:07:44,000 --> 00:07:47,000 And I will just try to multiply with an operation three. 156 00:07:47,000 --> 00:07:49,000 Now see what will happen. 157 00:07:49,000 --> 00:07:52,000 So here you can see mixed tuple had one. 158 00:07:52,000 --> 00:07:53,000 Hello world 3.14 and true. 159 00:07:53,000 --> 00:07:57,000 Now this has got entirely repeated three times right. 160 00:07:57,000 --> 00:08:02,000 So in this kind of multiplication operation what is basically happening is that the entire tuple is 161 00:08:02,000 --> 00:08:04,000 basically getting appended three times. 162 00:08:04,000 --> 00:08:04,000 Right. 163 00:08:05,000 --> 00:08:08,000 So that that is the reason we are basically doing an operation over here. 164 00:08:08,000 --> 00:08:14,000 So, uh, so this is what is something different with respect to the calculation that we do. 165 00:08:14,000 --> 00:08:18,000 Now you may be thinking, Krish, what about if I try to do this with numbers right. 166 00:08:18,000 --> 00:08:20,000 Numbers multiplied by three. 167 00:08:20,000 --> 00:08:22,000 So here also the same thing will happen. 168 00:08:22,000 --> 00:08:24,000 So 123456123456. 169 00:08:24,000 --> 00:08:25,000 And 123456. 170 00:08:25,000 --> 00:08:31,000 You may be thinking, Krish, wasn't it like you have to probably multiply all these numbers that also 171 00:08:31,000 --> 00:08:35,000 we can do it, but we have to iterate it inside this particular tuple, get each element and then perform 172 00:08:35,000 --> 00:08:36,000 numerical operation. 173 00:08:36,000 --> 00:08:37,000 Okay. 174 00:08:37,000 --> 00:08:42,000 But right now with respect to generic concatenation and this kind of operation here you can see that 175 00:08:42,000 --> 00:08:47,000 three times n number of times based on this multiplication that we are doing that many number of times 176 00:08:47,000 --> 00:08:51,000 this tuple will get element are appended with respect to the element. 177 00:08:51,000 --> 00:08:51,000 Okay. 178 00:08:52,000 --> 00:08:54,000 So these are some of the basic operations. 179 00:08:54,000 --> 00:09:00,000 Now let's go ahead and discuss about immutable nature of tuples. 180 00:09:00,000 --> 00:09:00,000 Okay. 181 00:09:00,000 --> 00:09:03,000 This is important of tuples. 182 00:09:04,000 --> 00:09:09,000 Now in the immutable immutable nature of tuples you need to understand one thing. 183 00:09:09,000 --> 00:09:13,000 And that is the first point that we have already learned right. 184 00:09:13,000 --> 00:09:15,000 Tuples are immutable. 185 00:09:15,000 --> 00:09:16,000 Okay. 186 00:09:16,000 --> 00:09:19,000 Meaning the elements cannot be changed once assigned. 187 00:09:19,000 --> 00:09:23,000 Okay, let's say that I go ahead and create my list and I go ahead and write one, two, three, four, 188 00:09:23,000 --> 00:09:24,000 five. 189 00:09:24,000 --> 00:09:24,000 Right. 190 00:09:24,000 --> 00:09:26,000 Now let me do one thing. 191 00:09:26,000 --> 00:09:27,000 List of zero. 192 00:09:28,000 --> 00:09:34,000 Or if I go ahead and print this specific list, uh, I will be okay. 193 00:09:34,000 --> 00:09:35,000 There is an error. 194 00:09:35,000 --> 00:09:36,000 Don't worry. 195 00:09:36,000 --> 00:09:39,000 Okay, so here you can see I'll be getting this specific element. 196 00:09:39,000 --> 00:09:41,000 Now let's see this okay. 197 00:09:41,000 --> 00:09:46,000 Now what I will do I will go ahead and take the first index and replace with it. 198 00:09:46,000 --> 00:09:47,000 Crush okay. 199 00:09:48,000 --> 00:09:49,000 Now I'll go ahead and print the list. 200 00:09:49,000 --> 00:09:51,000 Now see what will happen. 201 00:09:51,000 --> 00:09:53,000 So here we are changing the element. 202 00:09:53,000 --> 00:09:58,000 And this second index or this first index element has got replaced with crush. 203 00:09:58,000 --> 00:10:01,000 So this basically means uh list are mutable. 204 00:10:01,000 --> 00:10:04,000 That basically means the element can be changed once assigned. 205 00:10:04,000 --> 00:10:10,000 Now similar operation if I try to do with the same numbers that we had, write in the form of tuple. 206 00:10:10,000 --> 00:10:13,000 If I go ahead and say hey, number of one, what is the number of one two? 207 00:10:13,000 --> 00:10:17,000 If I try to assign some value, let's say I try to assign a value called as Krish. 208 00:10:17,000 --> 00:10:22,000 Here it says that hey tuple object does not support item assignment. 209 00:10:22,000 --> 00:10:26,000 And this is what immutable immutability comes into picture. 210 00:10:27,000 --> 00:10:28,000 Tuples are immutable. 211 00:10:28,000 --> 00:10:30,000 The elements cannot be changed once assigned. 212 00:10:30,000 --> 00:10:35,000 Okay So here you can actually see what I exactly mean to say. 213 00:10:35,000 --> 00:10:35,000 Right. 214 00:10:35,000 --> 00:10:37,000 And this is very much important. 215 00:10:37,000 --> 00:10:41,000 That basically means once you have defined a tuple you cannot change the element inside that okay. 216 00:10:41,000 --> 00:10:45,000 Once it is assigned there are ways how you can do it. 217 00:10:45,000 --> 00:10:50,000 First of all, you can take the tuple, convert into a list, and then change the element and then finally 218 00:10:50,000 --> 00:10:52,000 convert back again to the tuple if you want. 219 00:10:52,000 --> 00:10:57,000 Okay, that is how you can actually do okay, But by default, uh, you'll be seeing that tuples are 220 00:10:57,000 --> 00:10:58,000 immutable. 221 00:10:58,000 --> 00:10:59,000 Perfect. 222 00:10:59,000 --> 00:11:00,000 So till here we have understood. 223 00:11:00,000 --> 00:11:04,000 Now let's go ahead and discuss about tuple methods okay. 224 00:11:04,000 --> 00:11:10,000 And now in this tuple methods uh we will be seeing uh two important methods in tuple. 225 00:11:10,000 --> 00:11:12,000 So let's go ahead and uh see this. 226 00:11:12,000 --> 00:11:14,000 So let's say this is my tuple number. 227 00:11:15,000 --> 00:11:22,000 Uh so one of the, one of the example that I would like to show you, or one of the method that is commonly 228 00:11:22,000 --> 00:11:23,000 used with people. 229 00:11:23,000 --> 00:11:25,000 And there are only two methods that we specifically use. 230 00:11:25,000 --> 00:11:26,000 Okay. 231 00:11:26,000 --> 00:11:28,000 Numbers dot count. 232 00:11:28,000 --> 00:11:28,000 Okay. 233 00:11:28,000 --> 00:11:33,000 Let's say I want to count how many number of times one is present okay. 234 00:11:33,000 --> 00:11:34,000 So let me just go ahead and see this. 235 00:11:34,000 --> 00:11:36,000 And it is only present one time. 236 00:11:36,000 --> 00:11:39,000 Let me just go ahead and make a code over here. 237 00:11:39,000 --> 00:11:40,000 And let me just display the numbers. 238 00:11:40,000 --> 00:11:42,000 I have 123456 okay. 239 00:11:42,000 --> 00:11:49,000 So this count function is like it'll just try to count how many number of times the element. 240 00:11:49,000 --> 00:11:52,000 The element that I have given over here is present in the specific tuple. 241 00:11:53,000 --> 00:11:57,000 The next thing is that I will go ahead and print uh numbers. 242 00:11:57,000 --> 00:11:58,000 Dot. 243 00:11:58,000 --> 00:12:02,000 Let me just go ahead and do one function which is called as index. 244 00:12:02,000 --> 00:12:05,000 Now let's say I want to understand what is the element present in the index. 245 00:12:05,000 --> 00:12:06,000 Third. 246 00:12:06,000 --> 00:12:06,000 Right. 247 00:12:06,000 --> 00:12:11,000 And if I go ahead and execute here, you can see that in the third index 0123. 248 00:12:11,000 --> 00:12:12,000 Right. 249 00:12:12,000 --> 00:12:14,000 Or sorry what is the element like. 250 00:12:14,000 --> 00:12:17,000 Uh what uh where is this third element present. 251 00:12:17,000 --> 00:12:19,000 Like in which index this third element is present. 252 00:12:19,000 --> 00:12:20,000 Right. 253 00:12:20,000 --> 00:12:21,000 Or this three is present. 254 00:12:21,000 --> 00:12:23,000 Uh, again let me repeat it. 255 00:12:23,000 --> 00:12:25,000 Um, numbers dot index. 256 00:12:25,000 --> 00:12:26,000 Index is a function over here. 257 00:12:26,000 --> 00:12:33,000 And with respect to index, what it does is that it returns the first index of the value, okay. 258 00:12:33,000 --> 00:12:37,000 Whatever value I'm actually giving you, it is just going to return the index of that value. 259 00:12:37,000 --> 00:12:39,000 So here you can see 012. 260 00:12:39,000 --> 00:12:42,000 So three is basically present in the second index okay. 261 00:12:42,000 --> 00:12:48,000 So I hope you have got this two methods easily and you have understood it. 262 00:12:48,000 --> 00:12:49,000 One is count and one is index. 263 00:12:49,000 --> 00:12:53,000 And these are the two common methods that are specifically used with tuples. 264 00:12:53,000 --> 00:12:54,000 Okay. 265 00:12:54,000 --> 00:12:58,000 Now now let me talk about one amazing thing okay. 266 00:12:58,000 --> 00:13:04,000 And that is basically called as packing and unpacking tuple okay. 267 00:13:04,000 --> 00:13:06,000 Packing and unpacking tuple. 268 00:13:06,000 --> 00:13:12,000 Again this will be really handy whenever you are developing projects, whenever you are writing the 269 00:13:12,000 --> 00:13:12,000 code. 270 00:13:12,000 --> 00:13:12,000 Right. 271 00:13:12,000 --> 00:13:17,000 So let me just go ahead and write packed underscore tuple is equal to and I will define the elements 272 00:13:17,000 --> 00:13:19,000 like this one comma. 273 00:13:19,000 --> 00:13:21,000 And let's say this is my string. 274 00:13:21,000 --> 00:13:23,000 So this will be like hello. 275 00:13:23,000 --> 00:13:26,000 Then I have 3.14 okay. 276 00:13:26,000 --> 00:13:31,000 And I will just go ahead and print my packed underscore tuple. 277 00:13:31,000 --> 00:13:34,000 Now once I do this here you'll be able to see that I'm able to get it. 278 00:13:34,000 --> 00:13:41,000 Now whenever I define the numbers in this way like comma separated right by default, what it is going 279 00:13:41,000 --> 00:13:45,000 to do is that whatever number of elements that I have given, it is going to pack them in a tuple itself, 280 00:13:45,000 --> 00:13:46,000 right? 281 00:13:46,000 --> 00:13:49,000 So that is the reason we say it as we are packing a tuple whenever we give this. 282 00:13:50,000 --> 00:13:53,000 Now how do we unpack a tuple. 283 00:13:53,000 --> 00:13:56,000 So this is with respect to packing okay packing. 284 00:13:56,000 --> 00:13:58,000 But how do we unpack it. 285 00:13:58,000 --> 00:14:02,000 So unpacking a tuple and how do we do it. 286 00:14:02,000 --> 00:14:06,000 So here we know that there are three elements inside this tuple. 287 00:14:06,000 --> 00:14:08,000 Let's say I have four elements of five elements. 288 00:14:08,000 --> 00:14:10,000 Let's say in this case there are three elements. 289 00:14:10,000 --> 00:14:12,000 So I am just going to create three variable. 290 00:14:12,000 --> 00:14:14,000 Let's say a b c is equal to. 291 00:14:14,000 --> 00:14:19,000 And here what I'm actually going to do I'm going to use the same PAC tuple okay. 292 00:14:19,000 --> 00:14:24,000 Now what will happen if I go ahead and print a. 293 00:14:24,000 --> 00:14:24,000 Okay. 294 00:14:24,000 --> 00:14:27,000 And let me just go ahead and print B. 295 00:14:27,000 --> 00:14:31,000 And similarly let me just go ahead and print C. 296 00:14:31,000 --> 00:14:33,000 So here you can see one hello. 297 00:14:33,000 --> 00:14:34,000 And 3.14 right. 298 00:14:34,000 --> 00:14:36,000 So you are able to see this. 299 00:14:36,000 --> 00:14:41,000 And this is nothing but it is called as unpacking a tuple right now. 300 00:14:41,000 --> 00:14:46,000 Uh there is also some very important things, uh, that you really need to understand. 301 00:14:46,000 --> 00:14:47,000 Okay. 302 00:14:47,000 --> 00:14:51,000 Uh, with respect to unpacking, we can also use star. 303 00:14:51,000 --> 00:14:51,000 Okay. 304 00:14:51,000 --> 00:14:55,000 So let's say unpacking with star okay. 305 00:14:55,000 --> 00:14:59,000 And this is something new that you will be able to see as new new Python version will be coming. 306 00:14:59,000 --> 00:15:01,000 Some of the amazing features. 307 00:15:01,000 --> 00:15:07,000 So let's say I have a numbers and in these numbers I define a tuple one, two, three, four, five 308 00:15:07,000 --> 00:15:08,000 okay and six. 309 00:15:08,000 --> 00:15:09,000 Okay. 310 00:15:09,000 --> 00:15:11,000 Now let me do one thing. 311 00:15:11,000 --> 00:15:14,000 I will create one variable like this. 312 00:15:14,000 --> 00:15:15,000 And I'll use star. 313 00:15:16,000 --> 00:15:20,000 Let's say star will be middle and my third variable will be last. 314 00:15:20,000 --> 00:15:24,000 Okay, now why I'm creating this, you'll be able to understand. 315 00:15:24,000 --> 00:15:28,000 Now see if I go ahead and display the number, or I'm just going to assign this particular numbers over 316 00:15:28,000 --> 00:15:28,000 here. 317 00:15:28,000 --> 00:15:31,000 Now let me just go ahead and print first. 318 00:15:31,000 --> 00:15:36,000 Then I will go ahead and print middle okay. 319 00:15:36,000 --> 00:15:40,000 Sorry I'll remove the star over here I'll not require star. 320 00:15:40,000 --> 00:15:46,000 And then finally I will print the last element Okay, now see what will happen. 321 00:15:46,000 --> 00:15:47,000 Over here. 322 00:15:47,000 --> 00:15:52,000 I know six elements are there, but I'm just using three variables just to unpack. 323 00:15:52,000 --> 00:15:55,000 And I'm unpacking with one star I'm using in the middle variable. 324 00:15:55,000 --> 00:15:56,000 One star. 325 00:15:56,000 --> 00:15:56,000 Okay. 326 00:15:56,000 --> 00:15:58,000 Now see what will be the output okay. 327 00:15:58,000 --> 00:16:00,000 So the first one has given me one. 328 00:16:00,000 --> 00:16:01,000 This is fine. 329 00:16:01,000 --> 00:16:03,000 Now the middle star what it has done right. 330 00:16:03,000 --> 00:16:04,000 The star middle. 331 00:16:04,000 --> 00:16:07,000 It has taken all the remaining elements till the last element. 332 00:16:07,000 --> 00:16:09,000 See C23, four, five. 333 00:16:09,000 --> 00:16:12,000 And the last number is basically giving you the sixth. 334 00:16:12,000 --> 00:16:12,000 Right. 335 00:16:12,000 --> 00:16:19,000 So what the star does is that from wherever you are probably starting right till the last element, 336 00:16:19,000 --> 00:16:22,000 right before that last element, all the elements will be picked up. 337 00:16:22,000 --> 00:16:22,000 Okay. 338 00:16:22,000 --> 00:16:24,000 So this was about unpacking. 339 00:16:24,000 --> 00:16:29,000 Three variants have actually shown you packing unpacking a tuple and pack unpacking with a star. 340 00:16:29,000 --> 00:16:30,000 Okay. 341 00:16:30,000 --> 00:16:36,000 Uh, let me just go ahead and create more cells so that you'll be able to, uh, will be able to execute 342 00:16:36,000 --> 00:16:37,000 more code. 343 00:16:37,000 --> 00:16:37,000 Okay. 344 00:16:37,000 --> 00:16:43,000 Now let's go ahead and see some example for next tuples. 345 00:16:43,000 --> 00:16:43,000 Okay. 346 00:16:44,000 --> 00:16:47,000 Tuples inside a tuple is basically called as nested tuples. 347 00:16:47,000 --> 00:16:50,000 List inside a list is also called as nested list. 348 00:16:50,000 --> 00:16:56,000 So let's say if I go ahead and write like this, uh I can go ahead and create any number of list inside 349 00:16:56,000 --> 00:16:57,000 a list. 350 00:16:57,000 --> 00:16:57,000 Okay. 351 00:16:57,000 --> 00:17:00,000 Let's say I have elements like one, two, three, four. 352 00:17:00,000 --> 00:17:04,000 Here I have, um, six comma, seven comma, eight comma nine. 353 00:17:04,000 --> 00:17:08,000 And let's say I have one comma, one comma. 354 00:17:08,000 --> 00:17:11,000 Hello, comma. 355 00:17:11,000 --> 00:17:15,000 Uh, hello, comma 3.14 comma. 356 00:17:16,000 --> 00:17:19,000 Uh, see. 357 00:17:19,000 --> 00:17:19,000 Okay. 358 00:17:19,000 --> 00:17:21,000 Now this is what this is. 359 00:17:21,000 --> 00:17:23,000 List inside a list. 360 00:17:23,000 --> 00:17:23,000 Right. 361 00:17:23,000 --> 00:17:27,000 So here is an example of nested list okay. 362 00:17:27,000 --> 00:17:31,000 Because see I do not take in the previous session of list. 363 00:17:31,000 --> 00:17:34,000 The reason is only that whenever is the right opportunity right. 364 00:17:34,000 --> 00:17:36,000 We should include this topic over there. 365 00:17:36,000 --> 00:17:36,000 Right. 366 00:17:36,000 --> 00:17:39,000 And that is how you'll be able to understand all the other topics itself. 367 00:17:39,000 --> 00:17:40,000 Right? 368 00:17:40,000 --> 00:17:45,000 Because whatever operations we specifically do in list, similarly, only, uh, we also do it uh, 369 00:17:45,000 --> 00:17:48,000 in tuple also with respect to accessing the elements. 370 00:17:48,000 --> 00:17:50,000 And the difference is immutability and mutability. 371 00:17:50,000 --> 00:17:54,000 Right now let me just go ahead and write list of zero. 372 00:17:55,000 --> 00:17:58,000 Now list of zero basically means what this is my zeroth index. 373 00:17:58,000 --> 00:17:59,000 This is my first index. 374 00:17:59,000 --> 00:18:01,000 This is my second index okay. 375 00:18:01,000 --> 00:18:06,000 So if I'm writing list of zero you will be able to see that I am able to get one, two, three, four. 376 00:18:06,000 --> 00:18:09,000 But let's say that I want to pick up third element. 377 00:18:09,000 --> 00:18:13,000 Now to pick up third element, what I really need to do, I have to use another index. 378 00:18:13,000 --> 00:18:17,000 And this time this will be nothing but zero one, two. 379 00:18:17,000 --> 00:18:19,000 So this will basically belong to my second index. 380 00:18:19,000 --> 00:18:19,000 Right. 381 00:18:19,000 --> 00:18:23,000 So here you can probably see that I am able to get the third element right. 382 00:18:23,000 --> 00:18:26,000 So this is some common example right. 383 00:18:26,000 --> 00:18:32,000 Let's say I want to also use slicing operation I want to get the elements between one till four okay. 384 00:18:32,000 --> 00:18:35,000 So I can also go ahead and write like this zero colon. 385 00:18:35,000 --> 00:18:38,000 Sorry zero colon three okay. 386 00:18:38,000 --> 00:18:39,000 If I go ahead and write it. 387 00:18:39,000 --> 00:18:41,000 So see I am able to get 123. 388 00:18:41,000 --> 00:18:45,000 So slicing operation can also be applied in nested list okay. 389 00:18:45,000 --> 00:18:47,000 List within a list okay. 390 00:18:47,000 --> 00:18:49,000 Uh and it is not like only you need to have a list. 391 00:18:49,000 --> 00:18:51,000 You can also have tuples. 392 00:18:51,000 --> 00:18:52,000 You can also have multiple things. 393 00:18:52,000 --> 00:18:52,000 Right. 394 00:18:52,000 --> 00:18:57,000 So let's say I am going to probably go ahead and define this as tuple okay. 395 00:18:57,000 --> 00:18:59,000 Tuple okay. 396 00:18:59,000 --> 00:19:06,000 Or let me just show you in another example so that this code remains and I'll paste it over here okay. 397 00:19:06,000 --> 00:19:07,000 And let me do one thing. 398 00:19:07,000 --> 00:19:09,000 And here you have this. 399 00:19:10,000 --> 00:19:12,000 And here you have this okay. 400 00:19:12,000 --> 00:19:18,000 Now if I'm executing this let's say I want to probably get from my second index 012 okay. 401 00:19:18,000 --> 00:19:19,000 Second index. 402 00:19:19,000 --> 00:19:22,000 And let's say I want all the elements between zero to third index. 403 00:19:22,000 --> 00:19:24,000 So here I'll be able to get one hello world and 3.14. 404 00:19:24,000 --> 00:19:27,000 So inside a list also you can have tuples okay. 405 00:19:27,000 --> 00:19:29,000 It is up to you however you want to create. 406 00:19:29,000 --> 00:19:34,000 But whenever we talk about nested tuples uh let me just give you one basic example. 407 00:19:34,000 --> 00:19:34,000 Here. 408 00:19:34,000 --> 00:19:36,000 We are just going to create tuples inside a tuple. 409 00:19:36,000 --> 00:19:39,000 So I have 123ABC true false okay. 410 00:19:39,000 --> 00:19:41,000 So these are my tuples over here. 411 00:19:41,000 --> 00:19:44,000 Now we will try to access the elements. 412 00:19:45,000 --> 00:19:47,000 Access the elements. 413 00:19:48,000 --> 00:19:52,000 Access the elements inside a tuple. 414 00:19:52,000 --> 00:19:53,000 Okay. 415 00:19:53,000 --> 00:20:00,000 Now let me just go ahead and write print nested underscore tuple of zero. 416 00:20:00,000 --> 00:20:03,000 So if I go ahead and execute it I'm able to get 123 okay. 417 00:20:03,000 --> 00:20:07,000 If I want to just pick up C let's let's consider that I want to just go ahead and pick up C. 418 00:20:07,000 --> 00:20:13,000 Then how do I write I'll go ahead and write print nested underscore tuple. 419 00:20:14,000 --> 00:20:19,000 And here I'm going to specifically write uh zeroth uh first index. 420 00:20:19,000 --> 00:20:19,000 Right. 421 00:20:19,000 --> 00:20:21,000 First index will basically get me all the elements over here. 422 00:20:21,000 --> 00:20:23,000 And this will be my second index. 423 00:20:23,000 --> 00:20:23,000 Right. 424 00:20:23,000 --> 00:20:27,000 So here if I go ahead and execute it I'm able to get C right. 425 00:20:28,000 --> 00:20:32,000 I can also iterate through this nested tuples right by using a for loop. 426 00:20:32,000 --> 00:20:40,000 So iterating iterating over nested tuples. 427 00:20:40,000 --> 00:20:40,000 Okay. 428 00:20:41,000 --> 00:20:49,000 And here you'll be able to see for sub underscore tuple in nested underscore tuple. 429 00:20:49,000 --> 00:20:52,000 Okay I'll first of all go to the nested tuple. 430 00:20:52,000 --> 00:20:57,000 And then I will take the item item in the sub tuple. 431 00:20:58,000 --> 00:21:00,000 And let me just go ahead and print it. 432 00:21:00,000 --> 00:21:01,000 Let's print the item one by one. 433 00:21:01,000 --> 00:21:02,000 Right. 434 00:21:02,000 --> 00:21:08,000 So print item and here I'm just going to write end is equal to with a blank statement. 435 00:21:08,000 --> 00:21:14,000 So that whenever it is printing it should print um along with this blank a new line also. 436 00:21:14,000 --> 00:21:18,000 So now if I go ahead and execute see first tuple is basically getting printed one, two, three a, 437 00:21:18,000 --> 00:21:20,000 b, c and then true and false. 438 00:21:20,000 --> 00:21:22,000 So that is what I have right. 439 00:21:22,000 --> 00:21:28,000 So this was example with respect to uh tuples we have seen different different operations. 440 00:21:28,000 --> 00:21:30,000 We have seen about packing and packing. 441 00:21:31,000 --> 00:21:32,000 Uh we have seen the inbuilt methods. 442 00:21:32,000 --> 00:21:35,000 We have seen why do we get an error. 443 00:21:35,000 --> 00:21:36,000 What is mutable immutability. 444 00:21:37,000 --> 00:21:38,000 Everything we have actually seen. 445 00:21:38,000 --> 00:21:41,000 And we have also seen some of the examples with respect to uh, list. 446 00:21:41,000 --> 00:21:42,000 Right. 447 00:21:42,000 --> 00:21:50,000 But overall if you probably see like tuples are a kind of data structure, again, it will be specifically 448 00:21:50,000 --> 00:21:55,000 used when you do some kind of data analysis and all, uh, some or the other way, whenever you are 449 00:21:55,000 --> 00:21:59,000 writing the code and all, you will be using this tuple extensively. 450 00:21:59,000 --> 00:22:01,000 Now let me do one thing. 451 00:22:01,000 --> 00:22:06,000 Let me go ahead and finally write the conclusion so that you have this conclusion in mind where all 452 00:22:06,000 --> 00:22:12,000 tuples are tuples are versatile and very useful in various in many real world scenarios where an immutable 453 00:22:12,000 --> 00:22:14,000 and ordered collection of items is required. 454 00:22:14,000 --> 00:22:19,000 They are commonly used in data structure, function arguments, and return values as dictionary keys. 455 00:22:19,000 --> 00:22:23,000 Understanding how to leverage tuples effectively can improve the efficiency and readability of your 456 00:22:23,000 --> 00:22:26,000 Python codes, so I hope you like this particular video. 457 00:22:26,000 --> 00:22:28,000 This was it for my side. 458 00:22:28,000 --> 00:22:31,000 I will see you all in the next video, where we will be learning about the next data structure that 459 00:22:31,000 --> 00:22:32,000 is called as sets. 460 00:22:33,000 --> 00:22:33,000 Thank you. 461 00:22:33,000 --> 00:22:34,000 Take care. 462 00:22:34,000 --> 00:22:34,000 Bye bye.