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 --> 00:00:06,000 And now we are going to see some of the examples already. 4 00:00:06,000 --> 00:00:10,000 In our previous video we saw many topics regarding uh functions. 5 00:00:10,000 --> 00:00:12,000 And uh, there are a lot of advanced topics that are going to come. 6 00:00:12,000 --> 00:00:17,000 But before that I thought, why not create some examples and show you how we can probably solve those. 7 00:00:17,000 --> 00:00:18,000 Right. 8 00:00:18,000 --> 00:00:22,000 So first example over here is that we need to create a function for temperature conversion. 9 00:00:22,000 --> 00:00:27,000 So temperature conversion basically means we need to convert Celsius to Fahrenheit or Fahrenheit to 10 00:00:27,000 --> 00:00:27,000 Celsius. 11 00:00:27,000 --> 00:00:29,000 So how do we define a function? 12 00:00:29,000 --> 00:00:30,000 We'll go ahead and see. 13 00:00:30,000 --> 00:00:32,000 So let's go ahead and see this example. 14 00:00:32,000 --> 00:00:34,000 So first of all I will go ahead and create my function. 15 00:00:34,000 --> 00:00:37,000 Let's say I will write convert underscore temperature. 16 00:00:37,000 --> 00:00:40,000 So this is my function over here. 17 00:00:40,000 --> 00:00:42,000 And here I will give two parameters. 18 00:00:42,000 --> 00:00:46,000 One is temperature and one is the unit that I really want to convert it. 19 00:00:46,000 --> 00:00:52,000 Let's say if I give the unit over here as c, that basically means I need to convert this, uh, this 20 00:00:52,000 --> 00:00:55,000 entire temperature from Celsius to Fahrenheit. 21 00:00:55,000 --> 00:00:56,000 Right? 22 00:00:56,000 --> 00:00:59,000 And if I give the unit as F, right. 23 00:00:59,000 --> 00:01:03,000 So I need to convert the temperature from Fahrenheit to Celsius, right. 24 00:01:03,000 --> 00:01:06,000 So let me just go ahead and give a docstring. 25 00:01:06,000 --> 00:01:07,000 So this function. 26 00:01:09,000 --> 00:01:17,000 Converts temperature between Celsius. 27 00:01:18,000 --> 00:01:20,000 and Fahrenheit. 28 00:01:20,000 --> 00:01:21,000 Okay. 29 00:01:21,000 --> 00:01:27,000 So, uh, this is what is my definition of, uh, this particular function over here. 30 00:01:27,000 --> 00:01:30,000 And, uh, we will go ahead and write our code. 31 00:01:30,000 --> 00:01:30,000 Right. 32 00:01:30,000 --> 00:01:35,000 So here let's say I will go ahead and write if unit is double equal to capital C. 33 00:01:35,000 --> 00:01:36,000 Right. 34 00:01:36,000 --> 00:01:41,000 If I'm giving this particular unit, that basically means I need to convert my temperature from Celsius 35 00:01:41,000 --> 00:01:41,000 to Fahrenheit. 36 00:01:41,000 --> 00:01:47,000 So I'm going to return a temperature multiplied by, and I'll do the operation nine by five. 37 00:01:47,000 --> 00:01:48,000 Okay. 38 00:01:48,000 --> 00:01:51,000 And here let me just give the bracket nine by five. 39 00:01:51,000 --> 00:01:54,000 Uh oh sorry I need to first of all multiply it. 40 00:01:54,000 --> 00:01:57,000 Then I will go ahead and do the addition plus 32. 41 00:01:57,000 --> 00:02:03,000 So this is the formula of converting a Celsius to Fahrenheit with respect to the temperature okay. 42 00:02:03,000 --> 00:02:05,000 So this is the simple formula that we specifically use. 43 00:02:05,000 --> 00:02:13,000 And this in turn will be converting Celsius to Fahrenheit okay. 44 00:02:13,000 --> 00:02:16,000 Foreign Fahrenheit. 45 00:02:16,000 --> 00:02:16,000 Okay. 46 00:02:16,000 --> 00:02:20,000 Then uh, let me go ahead and write Elif. 47 00:02:20,000 --> 00:02:20,000 Okay. 48 00:02:20,000 --> 00:02:24,000 So here we are going to use everything, whatever things you have learned, let's say there are some 49 00:02:24,000 --> 00:02:28,000 examples where I'm going to use dictionaries, some examples where I'm going to use, uh, list and 50 00:02:28,000 --> 00:02:29,000 all. 51 00:02:29,000 --> 00:02:32,000 In this particular case, you can probably see that I'm also using if Elif. 52 00:02:32,000 --> 00:02:33,000 Right. 53 00:02:33,000 --> 00:02:38,000 So if, uh, Elif, the unit is double equal to Fahrenheit. 54 00:02:38,000 --> 00:02:40,000 Okay, then I'm going to basically return. 55 00:02:40,000 --> 00:02:41,000 Okay. 56 00:02:41,000 --> 00:02:48,000 And with for this particular temperature, I need to minus first of all, 32 and then multiply it by 57 00:02:48,000 --> 00:02:49,000 five by nine. 58 00:02:50,000 --> 00:02:50,000 Okay. 59 00:02:50,000 --> 00:02:55,000 And this will basically give us uh, our Fahrenheit to Celsius. 60 00:02:55,000 --> 00:02:55,000 Right. 61 00:02:55,000 --> 00:02:56,000 So this is the formula. 62 00:02:56,000 --> 00:03:02,000 If you go ahead and do the Google search also to convert uh, Celsius to Fahrenheit. 63 00:03:02,000 --> 00:03:04,000 So this is the formula that you usually get. 64 00:03:04,000 --> 00:03:04,000 Okay. 65 00:03:04,000 --> 00:03:07,000 So uh, that's it. 66 00:03:07,000 --> 00:03:08,000 This is what it is right. 67 00:03:08,000 --> 00:03:14,000 And if I don't give any information for our third parameter we need to also handle that. 68 00:03:14,000 --> 00:03:15,000 That is if I'm not giving any unit. 69 00:03:15,000 --> 00:03:17,000 So I will just go ahead and return. 70 00:03:17,000 --> 00:03:18,000 None okay. 71 00:03:18,000 --> 00:03:18,000 Okay. 72 00:03:18,000 --> 00:03:19,000 None. 73 00:03:20,000 --> 00:03:20,000 So done. 74 00:03:20,000 --> 00:03:23,000 So here I'm going to basically use this function. 75 00:03:23,000 --> 00:03:26,000 Now let me go ahead and call this function as convert temperature. 76 00:03:26,000 --> 00:03:32,000 And if I go ahead and write like a value let's say temperature I'm going to give 25. 77 00:03:32,000 --> 00:03:32,000 Right. 78 00:03:32,000 --> 00:03:34,000 And this is in Celsius. 79 00:03:34,000 --> 00:03:35,000 Right. 80 00:03:35,000 --> 00:03:38,000 Uh then I'm going to go ahead and print it. 81 00:03:38,000 --> 00:03:38,000 Right. 82 00:03:38,000 --> 00:03:41,000 And I will be basically getting converted. 83 00:03:41,000 --> 00:03:45,000 We are converting this from 29 degree Celsius to Fahrenheit. 84 00:03:45,000 --> 00:03:48,000 The next one that I'm actually going to do is print. 85 00:03:48,000 --> 00:03:48,000 Okay. 86 00:03:48,000 --> 00:03:52,000 Again, I will go ahead and call my convert temperature. 87 00:03:52,000 --> 00:03:56,000 And here I'm actually going to give 77 comma F. 88 00:03:56,000 --> 00:03:57,000 Right. 89 00:03:57,000 --> 00:03:58,000 And this I will be able to get the answer. 90 00:03:58,000 --> 00:04:00,000 Let's see whether it works. 91 00:04:00,000 --> 00:04:07,000 Yes 25 is nothing but 77 of degree Fahrenheit and 77 degree Fahrenheit is nothing but 25 degree Celsius. 92 00:04:07,000 --> 00:04:09,000 So this is how the conversion is done. 93 00:04:09,000 --> 00:04:11,000 And I feel that formula is absolutely right. 94 00:04:11,000 --> 00:04:11,000 What you have. 95 00:04:11,000 --> 00:04:11,000 Right. 96 00:04:12,000 --> 00:04:16,000 Um, and here you can just see based on units we are able to do it. 97 00:04:16,000 --> 00:04:18,000 So this is our first example. 98 00:04:18,000 --> 00:04:23,000 Um, now what I'm actually going to do is that I'm going to show you one more amazing example, which 99 00:04:23,000 --> 00:04:26,000 is called as password strength checker. 100 00:04:26,000 --> 00:04:26,000 Okay. 101 00:04:26,000 --> 00:04:28,000 Now what exactly is this? 102 00:04:28,000 --> 00:04:31,000 Uh, let's say that we are creating our user ID or login. 103 00:04:31,000 --> 00:04:34,000 And over there we specifically give passwords. 104 00:04:34,000 --> 00:04:34,000 Right? 105 00:04:34,000 --> 00:04:38,000 And it is a and most of the people just write password as 12345. 106 00:04:38,000 --> 00:04:41,000 So we need to have a strong password check okay. 107 00:04:41,000 --> 00:04:46,000 So I'll be giving some of the check over here to just uh, making you understand whether it is a weak 108 00:04:46,000 --> 00:04:49,000 password or a true or a, uh, very strong password. 109 00:04:49,000 --> 00:04:50,000 Right. 110 00:04:50,000 --> 00:04:55,000 So first of all, I will go ahead and write my definition is strong password. 111 00:04:55,000 --> 00:05:01,000 So this function will be responsible in checking whether a password is strong or not okay. 112 00:05:02,000 --> 00:05:05,000 So here you can see I will just go ahead and write my docstring. 113 00:05:05,000 --> 00:05:13,000 This function checks if the password is strong or not. 114 00:05:13,000 --> 00:05:13,000 Mm. 115 00:05:14,000 --> 00:05:15,000 Okay. 116 00:05:16,000 --> 00:05:21,000 Now let me go ahead and write let's say first condition that first criteria I want to put with respect 117 00:05:21,000 --> 00:05:22,000 to the password. 118 00:05:22,000 --> 00:05:25,000 My password should be minimum of eight character. 119 00:05:25,000 --> 00:05:25,000 Right. 120 00:05:25,000 --> 00:05:34,000 So I will go ahead and write if length of if length of password is less than eight is less than eight. 121 00:05:34,000 --> 00:05:39,000 So that basically means I'm going to just say, hey, this is a very bad password in short. 122 00:05:39,000 --> 00:05:45,000 So I'll just go and say false because this, uh, function that I'm actually creating is basically checking 123 00:05:45,000 --> 00:05:46,000 whether a password is strong or not. 124 00:05:46,000 --> 00:05:48,000 So right now the password is not strong. 125 00:05:48,000 --> 00:05:49,000 So I'm returning false. 126 00:05:49,000 --> 00:05:52,000 Then let me just go ahead and write another condition. 127 00:05:52,000 --> 00:05:53,000 If not okay. 128 00:05:53,000 --> 00:05:57,000 So if not is one condition if not any okay. 129 00:05:57,000 --> 00:06:02,000 So here we are just going to see whether this character is having any digit or not. 130 00:06:02,000 --> 00:06:03,000 Right. 131 00:06:03,000 --> 00:06:07,000 Whatever character whatever password we are specifically giving whether it is having any digit or not. 132 00:06:07,000 --> 00:06:08,000 Right. 133 00:06:08,000 --> 00:06:14,000 So what I'm actually going to do, if not, is basically like comparing whether there is not present 134 00:06:14,000 --> 00:06:15,000 or not. 135 00:06:15,000 --> 00:06:15,000 Right. 136 00:06:15,000 --> 00:06:16,000 Something like that. 137 00:06:16,000 --> 00:06:20,000 So I will go ahead and use a for loop for character in password. 138 00:06:20,000 --> 00:06:23,000 So we will go ahead and see each and every character. 139 00:06:23,000 --> 00:06:28,000 And here I will just go ahead and see whether this character is having any digit or not. 140 00:06:28,000 --> 00:06:28,000 Okay. 141 00:06:28,000 --> 00:06:33,000 So each digit is a function that is present in every characters or string. 142 00:06:33,000 --> 00:06:34,000 right? 143 00:06:34,000 --> 00:06:39,000 So I'm going to compare for every character in this specific password, whether it is having a digit 144 00:06:39,000 --> 00:06:39,000 or not. 145 00:06:39,000 --> 00:06:40,000 Right. 146 00:06:40,000 --> 00:06:43,000 If there is not any digits right. 147 00:06:43,000 --> 00:06:45,000 So what I will do I will again return false. 148 00:06:45,000 --> 00:06:46,000 Okay. 149 00:06:46,000 --> 00:06:50,000 Please see carefully what kind of condition I'm using. 150 00:06:50,000 --> 00:06:50,000 Right. 151 00:06:50,000 --> 00:06:55,000 So this is just like a any function or an inbuilt function that is present in Python. 152 00:06:55,000 --> 00:06:59,000 And we are iterating through each and every characters in that password, and we are seeing whether 153 00:06:59,000 --> 00:07:00,000 it is a digit or not. 154 00:07:00,000 --> 00:07:01,000 Right. 155 00:07:01,000 --> 00:07:05,000 And this is digit is a kind of function that is available in strings. 156 00:07:05,000 --> 00:07:05,000 Okay. 157 00:07:05,000 --> 00:07:07,000 So this is one of the check that I really want to do. 158 00:07:07,000 --> 00:07:08,000 Right. 159 00:07:08,000 --> 00:07:12,000 Then I will also be checking with respect to the password is lower. 160 00:07:12,000 --> 00:07:19,000 If all the characters is lower then also we should return it false saying that hey it is not exactly 161 00:07:19,000 --> 00:07:20,000 a good password, right? 162 00:07:20,000 --> 00:07:21,000 So I will go ahead and write. 163 00:07:21,000 --> 00:07:22,000 If not any. 164 00:07:22,000 --> 00:07:25,000 Again I will go ahead and write my next condition. 165 00:07:25,000 --> 00:07:30,000 And here this time I will say hey for cat and password. 166 00:07:30,000 --> 00:07:32,000 And here I'm going to check. 167 00:07:32,000 --> 00:07:32,000 Right. 168 00:07:32,000 --> 00:07:34,000 And what I have to check over here. 169 00:07:34,000 --> 00:07:37,000 Whether my character is lower. 170 00:07:37,000 --> 00:07:41,000 So low is lower is one of the function that is again present in Python. 171 00:07:41,000 --> 00:07:43,000 Sorry for character in password I have to write. 172 00:07:43,000 --> 00:07:44,000 Okay. 173 00:07:44,000 --> 00:07:49,000 Uh, I'm just checking whether the character is lower or not for all the characters that are present 174 00:07:49,000 --> 00:07:49,000 over there. 175 00:07:49,000 --> 00:07:53,000 And if it is present, I'm just going to return the false. 176 00:07:53,000 --> 00:07:53,000 Okay. 177 00:07:54,000 --> 00:07:56,000 So guys, now we have written the condition still here. 178 00:07:56,000 --> 00:08:00,000 We have also checked, uh, like all the characters should not be lowercase. 179 00:08:00,000 --> 00:08:00,000 Okay. 180 00:08:00,000 --> 00:08:07,000 Now, uh, similarly all the characters should also not be, you know, uppercase, you know, and, 181 00:08:07,000 --> 00:08:09,000 uh, we'll also check for that. 182 00:08:09,000 --> 00:08:09,000 Right. 183 00:08:09,000 --> 00:08:14,000 So here I'm going to write if, if not in if not any. 184 00:08:14,000 --> 00:08:17,000 And this time I will be using cat. 185 00:08:17,000 --> 00:08:19,000 Dot is upper right. 186 00:08:19,000 --> 00:08:25,000 So there are a lot of functions with respect to strings which I can specifically use over here. 187 00:08:25,000 --> 00:08:30,000 And let me just go ahead and write for cat in password okay. 188 00:08:31,000 --> 00:08:36,000 And this we will go ahead and check it out and we'll again write return false. 189 00:08:36,000 --> 00:08:37,000 Okay. 190 00:08:37,000 --> 00:08:38,000 Now this is there. 191 00:08:38,000 --> 00:08:41,000 Now let's think of more things, you know. 192 00:08:41,000 --> 00:08:44,000 Uh, let's see for any special characters. 193 00:08:44,000 --> 00:08:51,000 So for special character, uh, I would like to add many special characters that are probably present, 194 00:08:51,000 --> 00:08:51,000 right. 195 00:08:51,000 --> 00:08:57,000 If not any, let's say in our character, if there is no special character like this, then also I can 196 00:08:57,000 --> 00:09:01,000 say that, hey, this is basically a weak password, right? 197 00:09:01,000 --> 00:09:03,000 At least it should have one upper. 198 00:09:03,000 --> 00:09:08,000 You know, at least it should have one digits, you know, so this kind of condition. 199 00:09:08,000 --> 00:09:11,000 So here I've used all special characters over here for character in password. 200 00:09:11,000 --> 00:09:15,000 And then if it is not present we are just going to return false. 201 00:09:15,000 --> 00:09:20,000 If everything satisfies uh, then we will go ahead and return true. 202 00:09:20,000 --> 00:09:21,000 Okay. 203 00:09:21,000 --> 00:09:23,000 So here all return false are there. 204 00:09:23,000 --> 00:09:25,000 And then here return true is there. 205 00:09:25,000 --> 00:09:25,000 Right. 206 00:09:25,000 --> 00:09:30,000 So if all this condition are false, then, uh, if all this condition does not get satisfied, then 207 00:09:30,000 --> 00:09:31,000 we are just going to return true. 208 00:09:31,000 --> 00:09:36,000 Saying that, hey, this is super amazing password and it is a strong password. 209 00:09:36,000 --> 00:09:38,000 Now let me just go ahead and call the function. 210 00:09:38,000 --> 00:09:41,000 So calling the function over here okay. 211 00:09:41,000 --> 00:09:45,000 And uh let me just give some of the things over here. 212 00:09:45,000 --> 00:09:45,000 Right. 213 00:09:45,000 --> 00:09:51,000 So I'll go ahead and write print ease, underscore strong password. 214 00:09:51,000 --> 00:09:53,000 And let me just give one example. 215 00:09:53,000 --> 00:09:55,000 Let's say I have a capital letter. 216 00:09:55,000 --> 00:09:58,000 And I will write a small letter again a capital letter. 217 00:09:58,000 --> 00:10:00,000 And this is V password okay. 218 00:10:00,000 --> 00:10:05,000 But here you can see that I'm not having any special character or uh, other than that I think everything 219 00:10:05,000 --> 00:10:07,000 is getting satisfied. 220 00:10:07,000 --> 00:10:07,000 Right. 221 00:10:07,000 --> 00:10:08,000 And digit is also not there. 222 00:10:08,000 --> 00:10:11,000 So I should definitely be getting false for this. 223 00:10:11,000 --> 00:10:16,000 One more way is that I can go ahead and print okay is strong password. 224 00:10:16,000 --> 00:10:20,000 And let me just go ahead and use some special characters. 225 00:10:20,000 --> 00:10:26,000 So I will go ahead and write str and let me just go ahead and use uh zero over here. 226 00:10:26,000 --> 00:10:27,000 Okay. 227 00:10:27,000 --> 00:10:33,000 And I will be using ng capital P w d and let me use one special character like exclamation. 228 00:10:33,000 --> 00:10:34,000 Okay. 229 00:10:34,000 --> 00:10:39,000 Now let's see whether both of them I think this should basically be giving me false, and this should 230 00:10:39,000 --> 00:10:40,000 be giving me true. 231 00:10:40,000 --> 00:10:45,000 Okay, so now if I execute this here, you can see since I do not have a digit or a special character, 232 00:10:45,000 --> 00:10:48,000 I'm actually getting false here. 233 00:10:48,000 --> 00:10:52,000 I have both uh, a digit and a special character. 234 00:10:52,000 --> 00:10:56,000 So and that is the reason I am also having a capital letter over here. 235 00:10:56,000 --> 00:10:57,000 So that is the reason I'm getting true. 236 00:10:57,000 --> 00:11:02,000 So this is one amazing example with respect to password strength checker. 237 00:11:02,000 --> 00:11:07,000 Just with the help of one function, we are able to do this kind of, uh, validation and we are able 238 00:11:07,000 --> 00:11:08,000 to execute it. 239 00:11:08,000 --> 00:11:09,000 Okay. 240 00:11:09,000 --> 00:11:13,000 Now uh, let's go with the third example. 241 00:11:13,000 --> 00:11:19,000 Now this specific example, I have actually selected, uh, just to make sure to show you like, uh, 242 00:11:19,000 --> 00:11:21,000 how in the real world application this can be used. 243 00:11:21,000 --> 00:11:26,000 So calculate the total cost of items in a shopping cart. 244 00:11:26,000 --> 00:11:28,000 So here we are going to define a function. 245 00:11:28,000 --> 00:11:34,000 So I will go ahead and write def calculate underscore total underscore cost. 246 00:11:35,000 --> 00:11:37,000 And here I'm going to give my cart okay. 247 00:11:37,000 --> 00:11:43,000 Now this cart will basically be having a lot of uh you know items over there. 248 00:11:43,000 --> 00:11:46,000 And we can also give in the form of dictionary. 249 00:11:46,000 --> 00:11:52,000 So right now I'm just going to do pass because first of all I'll see what kind of data I have okay. 250 00:11:52,000 --> 00:11:56,000 So let's just go ahead and show you some of the example with respect to card data. 251 00:11:56,000 --> 00:11:59,000 And since we have already learned about dictionary. 252 00:11:59,000 --> 00:12:03,000 So we will go ahead and write cart is equal to and we'll create a list. 253 00:12:03,000 --> 00:12:05,000 And this will be a list of dictionaries okay. 254 00:12:05,000 --> 00:12:13,000 So let's say my first item is something like with key value pairs like name is equal to uh let's say 255 00:12:13,000 --> 00:12:14,000 I have Apple. 256 00:12:15,000 --> 00:12:15,000 Okay. 257 00:12:15,000 --> 00:12:21,000 Then I have price which is equal to 0.5. 258 00:12:22,000 --> 00:12:25,000 Then I have specifically quantity okay. 259 00:12:26,000 --> 00:12:29,000 And this quantity will be equal to four. 260 00:12:29,000 --> 00:12:29,000 Okay. 261 00:12:30,000 --> 00:12:34,000 Uh now I will go ahead and create my next, uh example. 262 00:12:34,000 --> 00:12:39,000 And let's say this point $5 I will written like that, right? 263 00:12:39,000 --> 00:12:40,000 Obviously. 264 00:12:40,000 --> 00:12:43,000 So here let me just go ahead and and name should be banana. 265 00:12:43,000 --> 00:12:44,000 Okay. 266 00:12:44,000 --> 00:12:46,000 Price will be point $3. 267 00:12:46,000 --> 00:12:50,000 Let's say quantity I'll say six six bananas. 268 00:12:50,000 --> 00:12:51,000 This is the price. 269 00:12:51,000 --> 00:12:56,000 And let me just go ahead and again add one more item over here. 270 00:12:56,000 --> 00:12:56,000 Right. 271 00:12:58,000 --> 00:13:01,000 Now let me just go ahead and write one more like orange. 272 00:13:01,000 --> 00:13:02,000 Okay. 273 00:13:02,000 --> 00:13:07,000 The price will be 0.7 and quantity I can write as three. 274 00:13:07,000 --> 00:13:08,000 Okay. 275 00:13:08,000 --> 00:13:10,000 So this is my cart okay. 276 00:13:10,000 --> 00:13:16,000 With respect to all the items that I have, then I will just go ahead and write my function over here. 277 00:13:16,000 --> 00:13:18,000 So let me just go ahead and create a temporary variable. 278 00:13:18,000 --> 00:13:20,000 Total cost is equal to zero. 279 00:13:20,000 --> 00:13:22,000 Now all I have to do is that I have to explore. 280 00:13:22,000 --> 00:13:25,000 I have to probably go through this each and every cart. 281 00:13:25,000 --> 00:13:28,000 Uh, take the price. 282 00:13:28,000 --> 00:13:28,000 Okay. 283 00:13:28,000 --> 00:13:32,000 And see, uh, this price is basically for one quantity. 284 00:13:32,000 --> 00:13:33,000 Okay. 285 00:13:33,000 --> 00:13:37,000 So we will go ahead and multiply with this many number of quantities okay. 286 00:13:37,000 --> 00:13:40,000 And again we have to retrieve the data from this particular dictionary. 287 00:13:40,000 --> 00:13:42,000 And then we will be doing the total sum okay. 288 00:13:42,000 --> 00:13:46,000 So now let me just go ahead and write and write from item in cart. 289 00:13:46,000 --> 00:13:48,000 So I will go ahead and explore this okay. 290 00:13:49,000 --> 00:13:50,000 So I will just go ahead and write. 291 00:13:50,000 --> 00:13:55,000 Total cost is equal to or plus equal to okay. 292 00:13:55,000 --> 00:13:58,000 So just like an increment operation where we are adding something. 293 00:13:58,000 --> 00:14:02,000 Then here I'm going to write item of price okay. 294 00:14:02,000 --> 00:14:03,000 Item of price. 295 00:14:03,000 --> 00:14:11,000 So this for every item of price we are just going to multiply with the item of quantity okay. 296 00:14:11,000 --> 00:14:14,000 So let me just go ahead and write it down. 297 00:14:14,000 --> 00:14:16,000 Then I'll be getting my total cost. 298 00:14:16,000 --> 00:14:19,000 Uh, then I can go ahead and return the total cost. 299 00:14:19,000 --> 00:14:25,000 So this function is just going to multiply the price with respect to all the quantity for each and every 300 00:14:25,000 --> 00:14:26,000 item. 301 00:14:26,000 --> 00:14:28,000 Now quickly let me just go ahead and call the function. 302 00:14:28,000 --> 00:14:33,000 So here I'm going to write calling the function okay. 303 00:14:33,000 --> 00:14:39,000 And here I will write total underscore cost is equal to calculate total cost. 304 00:14:39,000 --> 00:14:42,000 And here I'm going to give my data as cart. 305 00:14:42,000 --> 00:14:45,000 Now let's go ahead and execute it I'll press shift enter. 306 00:14:46,000 --> 00:14:48,000 And here uh okay. 307 00:14:48,000 --> 00:14:52,000 Let me just go ahead and print this total cost because we have not displayed anything. 308 00:14:52,000 --> 00:14:55,000 Now here you can see 5.889. 309 00:14:55,000 --> 00:14:59,000 So this is my total cost right. 310 00:14:59,000 --> 00:15:02,000 With respect to all the items that I have actually bought okay. 311 00:15:02,000 --> 00:15:07,000 And this is amazing I'm able to see the total cost of my entire cart. 312 00:15:07,000 --> 00:15:10,000 So here we have just created a function which is taking that cart. 313 00:15:10,000 --> 00:15:12,000 Items and cart can be given as a dictionary. 314 00:15:12,000 --> 00:15:14,000 List whatever things you really want. 315 00:15:14,000 --> 00:15:17,000 Then we'll iterate through each and everything and we'll calculate the cost. 316 00:15:18,000 --> 00:15:18,000 Perfect. 317 00:15:18,000 --> 00:15:21,000 Uh, let's go ahead and see one more example. 318 00:15:21,000 --> 00:15:26,000 Uh, this time, what we are basically going to do over here is that we are going to check or we are 319 00:15:26,000 --> 00:15:31,000 going to create a function which will be checking if a string is palindrome. 320 00:15:31,000 --> 00:15:33,000 Now what does palindrome basically mean? 321 00:15:33,000 --> 00:15:38,000 So if you just want to understand about palindrome, write some of the examples. 322 00:15:38,000 --> 00:15:40,000 Let's say if I use this string a b a. 323 00:15:40,000 --> 00:15:44,000 If you read it from the front direction it is a b a. 324 00:15:44,000 --> 00:15:48,000 If you read it from the backward direction, it is again a b a only right? 325 00:15:48,000 --> 00:15:50,000 So from front and back both are same. 326 00:15:50,000 --> 00:15:51,000 Okay. 327 00:15:51,000 --> 00:15:56,000 So we are going to basically write a function which will be able to do the check for any string from 328 00:15:56,000 --> 00:16:01,000 whether from the front it is equal and from the back it is equal with respect to the characters that 329 00:16:01,000 --> 00:16:01,000 we have. 330 00:16:01,000 --> 00:16:02,000 It should be same. 331 00:16:02,000 --> 00:16:03,000 Okay. 332 00:16:03,000 --> 00:16:05,000 So here, uh, let us go ahead and define a function. 333 00:16:05,000 --> 00:16:08,000 So I'm going to write is underscore palindrome. 334 00:16:08,000 --> 00:16:11,000 So I'll just go ahead and write. 335 00:16:11,000 --> 00:16:13,000 My function is underscore palindrome. 336 00:16:13,000 --> 00:16:16,000 And here I'm going to give my string okay. 337 00:16:16,000 --> 00:16:16,000 Okay. 338 00:16:16,000 --> 00:16:23,000 Now the best way to do is that whatever string I write right between all the spaces. 339 00:16:23,000 --> 00:16:24,000 First of all, I should remove it. 340 00:16:25,000 --> 00:16:26,000 So I'll take the string. 341 00:16:26,000 --> 00:16:30,000 I'll write s dot lower because I have to also do the lowering of all the characters. 342 00:16:30,000 --> 00:16:33,000 And let me just replace all the empty string. 343 00:16:34,000 --> 00:16:34,000 Okay. 344 00:16:34,000 --> 00:16:36,000 With a string. 345 00:16:36,000 --> 00:16:36,000 Right? 346 00:16:36,000 --> 00:16:39,000 With like I should just remove that empty spaces. 347 00:16:40,000 --> 00:16:47,000 Now the best way to do this is that I hope everybody knows in string we have, uh, discussed about, 348 00:16:47,000 --> 00:16:49,000 uh, you know, slicing operations and all. 349 00:16:49,000 --> 00:16:51,000 So I will just go ahead and right. 350 00:16:51,000 --> 00:16:51,000 Colon. 351 00:16:51,000 --> 00:16:53,000 Colon minus one. 352 00:16:53,000 --> 00:16:53,000 Okay. 353 00:16:53,000 --> 00:16:58,000 Now, if this string is, uh, if I'm. 354 00:16:58,000 --> 00:17:02,000 See, this is what I'm getting the reverse of a string, right? 355 00:17:02,000 --> 00:17:06,000 If I'm writing this particular code, I just need to compare this with my s, right? 356 00:17:06,000 --> 00:17:11,000 So if I go ahead and write s double equal to, this will either give true or false. 357 00:17:11,000 --> 00:17:15,000 This is basically the reverse of this specific string itself, right? 358 00:17:15,000 --> 00:17:19,000 So if both of them are equal then we can definitely say that it is a palindrome. 359 00:17:19,000 --> 00:17:24,000 Now let us go ahead and see here uh I will go ahead and call this palindrome. 360 00:17:24,000 --> 00:17:26,000 Now I in in Google. 361 00:17:26,000 --> 00:17:29,000 Also you can search for different different uh text. 362 00:17:29,000 --> 00:17:30,000 Right. 363 00:17:30,000 --> 00:17:39,000 So I will use a sentence which is called as a man a plan a canal Panama. 364 00:17:39,000 --> 00:17:40,000 Okay. 365 00:17:40,000 --> 00:17:42,000 Now if you read from here. 366 00:17:42,000 --> 00:17:42,000 Right. 367 00:17:42,000 --> 00:17:45,000 And if you read from the reverse, it is almost same. 368 00:17:45,000 --> 00:17:46,000 See a man. 369 00:17:46,000 --> 00:17:46,000 Right. 370 00:17:46,000 --> 00:17:49,000 So if it is starting from a man. 371 00:17:49,000 --> 00:17:54,000 So here also from backwards, if I read a man is over here right. 372 00:17:54,000 --> 00:17:55,000 Then again a plan. 373 00:17:55,000 --> 00:17:58,000 So A is over here and plan is still here, right? 374 00:17:58,000 --> 00:18:01,000 So I if you read this particular sentence, it is reverse. 375 00:18:01,000 --> 00:18:02,000 Again it is almost same. 376 00:18:02,000 --> 00:18:03,000 Right. 377 00:18:03,000 --> 00:18:04,000 So let's go ahead and print this. 378 00:18:04,000 --> 00:18:09,000 And next one I will just go ahead and take one sentence which is not palindrome. 379 00:18:09,000 --> 00:18:11,000 So let me just go ahead and write hello. 380 00:18:11,000 --> 00:18:17,000 So in hello case I don't have the same sentence from forward or backward right. 381 00:18:17,000 --> 00:18:17,000 It is not equal. 382 00:18:17,000 --> 00:18:21,000 So first one should be giving me true and second one should be giving me false. 383 00:18:21,000 --> 00:18:22,000 So here you can see it is true. 384 00:18:22,000 --> 00:18:24,000 And the second one is basically false. 385 00:18:24,000 --> 00:18:28,000 So this is one amazing example with respect to palindrome. 386 00:18:28,000 --> 00:18:34,000 And just by using this string operation slicing operation how easily you are able to do it. 387 00:18:34,000 --> 00:18:35,000 Okay. 388 00:18:35,000 --> 00:18:40,000 Now the next example that we are basically going to see is something called as factorial of a number 389 00:18:40,000 --> 00:18:41,000 using recursion. 390 00:18:41,000 --> 00:18:42,000 Now what is recursion? 391 00:18:42,000 --> 00:18:44,000 Recursion is nothing but I. 392 00:18:44,000 --> 00:18:49,000 If I create a function, that function inside, the body of that function will be called again and again. 393 00:18:49,000 --> 00:18:53,000 Okay, and if I talk about factorials, let's say I want to calculate five factorial. 394 00:18:53,000 --> 00:18:59,000 So it is nothing but five into four into three into two into one. 395 00:18:59,000 --> 00:18:59,000 Right. 396 00:18:59,000 --> 00:19:02,000 So this basically is the operation of any factorials. 397 00:19:02,000 --> 00:19:03,000 Right. 398 00:19:03,000 --> 00:19:06,000 So I have to write a function which will be factorial. 399 00:19:06,000 --> 00:19:09,000 And let's say I have given I want the factorial for five. 400 00:19:09,000 --> 00:19:09,000 Right. 401 00:19:09,000 --> 00:19:16,000 So first condition will be that if n is equal to zero right then what I need to do, I just need to 402 00:19:16,000 --> 00:19:17,000 return one. 403 00:19:17,000 --> 00:19:17,000 Right. 404 00:19:17,000 --> 00:19:20,000 Because five into four into three into one right. 405 00:19:20,000 --> 00:19:21,000 So three into two into one. 406 00:19:21,000 --> 00:19:22,000 It should be like that. 407 00:19:22,000 --> 00:19:24,000 If I'm starting from five it should end till one. 408 00:19:24,000 --> 00:19:28,000 So if n becomes zero I need to just return one okay. 409 00:19:28,000 --> 00:19:36,000 Else I will go ahead and just use one simple return n multiplied by factorial n minus one. 410 00:19:36,000 --> 00:19:37,000 Right. 411 00:19:37,000 --> 00:19:41,000 So here I am calling this particular function right. 412 00:19:41,000 --> 00:19:43,000 So initially if I give five right. 413 00:19:43,000 --> 00:19:44,000 So what will happen. 414 00:19:44,000 --> 00:19:45,000 This condition will become false. 415 00:19:45,000 --> 00:19:49,000 So it will just go ahead and write five multiplied by factorial of four. 416 00:19:49,000 --> 00:19:51,000 Then again factorial of four. 417 00:19:51,000 --> 00:19:56,000 When it is called it will be four into factorial of three, then three into factorial of two, then 418 00:19:56,000 --> 00:19:59,000 two into factorial of one, then one into factorial of zero. 419 00:19:59,000 --> 00:20:02,000 When zero comes, return one, so it will be multiplied by one, right? 420 00:20:02,000 --> 00:20:06,000 So now if I just go ahead and call the function, it will be nothing. 421 00:20:06,000 --> 00:20:10,000 But I can just go ahead and write factorial with respect to phi. 422 00:20:10,000 --> 00:20:13,000 And here you can see this is my output. 423 00:20:13,000 --> 00:20:16,000 If I want factorial for six this is the output. 424 00:20:16,000 --> 00:20:18,000 Here you can see that I am able to get it right. 425 00:20:18,000 --> 00:20:20,000 And this is what is called as recursion. 426 00:20:20,000 --> 00:20:24,000 In recursion inside a function you are calling the same function. 427 00:20:24,000 --> 00:20:27,000 Unless and until based on this condition it will keep on executing. 428 00:20:27,000 --> 00:20:28,000 Okay. 429 00:20:29,000 --> 00:20:34,000 Uh, so there are two more examples of function to read a file and count the frequency of the word. 430 00:20:34,000 --> 00:20:39,000 Okay, I know I have not discussed much about file operation yet. 431 00:20:39,000 --> 00:20:44,000 Okay, but I really want to show you like, let's say that I have one file over here. 432 00:20:44,000 --> 00:20:47,000 Sample text I have written two line of code. 433 00:20:47,000 --> 00:20:48,000 Hello, world. 434 00:20:48,000 --> 00:20:48,000 How are you? 435 00:20:48,000 --> 00:20:49,000 My name is Krish. 436 00:20:49,000 --> 00:20:50,000 Okay. 437 00:20:50,000 --> 00:20:55,000 Uh, as we go ahead, we'll be discussing more about, uh, reading file and doing file operation. 438 00:20:55,000 --> 00:21:00,000 But here I just want to give you an example, like how we can create a function to this do this task 439 00:21:00,000 --> 00:21:01,000 okay. 440 00:21:01,000 --> 00:21:02,000 So first of all what I'll do. 441 00:21:02,000 --> 00:21:08,000 Uh, so my task is very simple over here I will try to read a file and count the frequency of each word. 442 00:21:08,000 --> 00:21:08,000 Right. 443 00:21:08,000 --> 00:21:10,000 So how many times each word is present? 444 00:21:10,000 --> 00:21:11,000 Okay. 445 00:21:11,000 --> 00:21:18,000 So quickly we will go ahead and write definition count underscore word underscore frequency okay. 446 00:21:19,000 --> 00:21:22,000 And now I'm just going to give my file path. 447 00:21:23,000 --> 00:21:27,000 Uh the best way to read file path is by using with open function. 448 00:21:27,000 --> 00:21:32,000 Open function is there in Python where you can specifically use and open any kind of file. 449 00:21:33,000 --> 00:21:35,000 So I will go ahead and write word underscore count. 450 00:21:35,000 --> 00:21:38,000 And I know that since I need to count the frequency of each word. 451 00:21:38,000 --> 00:21:40,000 So I need a dictionary over here. 452 00:21:40,000 --> 00:21:42,000 So this will be an empty dictionary. 453 00:21:42,000 --> 00:21:47,000 Now I'll go ahead and write with open my file underscore path. 454 00:21:47,000 --> 00:21:50,000 And this will open in my read mode okay. 455 00:21:50,000 --> 00:21:53,000 So for read mode I will give it in string okay. 456 00:21:53,000 --> 00:21:58,000 And there is also like write mode and all which will be discussing as we go ahead in the upcoming sessions. 457 00:21:58,000 --> 00:22:01,000 And then we will go ahead and write as file. 458 00:22:01,000 --> 00:22:04,000 Then we will go ahead and write for line in file. 459 00:22:04,000 --> 00:22:04,000 Okay. 460 00:22:05,000 --> 00:22:11,000 And we are just going to write words is equal to line dot split okay. 461 00:22:12,000 --> 00:22:13,000 Line dot split. 462 00:22:13,000 --> 00:22:17,000 So we are splitting it based on new line characters. 463 00:22:17,000 --> 00:22:22,000 We are uh going through this particular file right with respect to that. 464 00:22:22,000 --> 00:22:27,000 Okay, now, once I get the words right, once we by using this particular line of code, we will be 465 00:22:27,000 --> 00:22:33,000 getting words because every space it will try to calculate it will split it and it will retrieve all 466 00:22:33,000 --> 00:22:34,000 these words. 467 00:22:34,000 --> 00:22:35,000 Okay. 468 00:22:35,000 --> 00:22:40,000 Now once we get the words, what I will do is that I will go ahead and write for words in word. 469 00:22:40,000 --> 00:22:41,000 Okay. 470 00:22:41,000 --> 00:22:48,000 And here I'm going to basically write word is equal to word dot lower. 471 00:22:48,000 --> 00:22:49,000 Okay. 472 00:22:49,000 --> 00:22:50,000 So I'm going to do the lower operation. 473 00:22:50,000 --> 00:22:55,000 First of all I really need to make small uh for all the words. 474 00:22:55,000 --> 00:22:55,000 Okay. 475 00:22:55,000 --> 00:23:01,000 Then uh, let's say I want to probably do dot strip operation. 476 00:23:01,000 --> 00:23:02,000 Okay. 477 00:23:02,000 --> 00:23:05,000 And if you don't know about dot strip, uh, you'll be able to understand. 478 00:23:05,000 --> 00:23:12,000 Whenever I give any specific words, it should be able to split based on any kind of characters because 479 00:23:12,000 --> 00:23:13,000 I need each and every word. 480 00:23:13,000 --> 00:23:19,000 So I'll be using some special characters like colon slash, exclamation, everything. 481 00:23:19,000 --> 00:23:22,000 I'll be using this even, um, like it should. 482 00:23:22,000 --> 00:23:24,000 It should also split h e also separately. 483 00:23:24,000 --> 00:23:24,000 Right. 484 00:23:24,000 --> 00:23:26,000 So that is the reason I've given this also. 485 00:23:26,000 --> 00:23:29,000 And if there is exclamation everything, I'll try to strip it. 486 00:23:29,000 --> 00:23:31,000 And uh, I will try to get the word okay. 487 00:23:31,000 --> 00:23:37,000 Then I will just go ahead and write word of count and I will take that specific word. 488 00:23:37,000 --> 00:23:38,000 Okay. 489 00:23:38,000 --> 00:23:39,000 Please focus on the logic. 490 00:23:39,000 --> 00:23:40,000 Okay? 491 00:23:40,000 --> 00:23:41,000 Logic is super important. 492 00:23:41,000 --> 00:23:44,000 And logic, you become better when you keep on practicing. 493 00:23:44,000 --> 00:23:48,000 Then I'm going to write word underscore count dot get. 494 00:23:48,000 --> 00:23:55,000 And here I'm going to write word comma zero okay word comma zero. 495 00:23:55,000 --> 00:23:59,000 And then we are going to add it with one okay. 496 00:23:59,000 --> 00:24:06,000 So I'm using this get function which is available in the in the dictionary as I have already shown you. 497 00:24:06,000 --> 00:24:08,000 And I'll go and search for this specific word. 498 00:24:08,000 --> 00:24:09,000 Okay. 499 00:24:09,000 --> 00:24:12,000 Uh, if it is not present then the value will be assigned to zero. 500 00:24:12,000 --> 00:24:14,000 Otherwise we are just going to increment with one. 501 00:24:14,000 --> 00:24:21,000 And we have already seen Dot get in our previous, uh videos when we discussed about dictionaries. 502 00:24:21,000 --> 00:24:24,000 And finally when once it does it, I'm just going to return my word count. 503 00:24:24,000 --> 00:24:29,000 I need it needs to be with respect to this particular width, right in the same line. 504 00:24:29,000 --> 00:24:33,000 Now let me just go ahead and call the function here. 505 00:24:33,000 --> 00:24:36,000 First of all I need to give my file path okay. 506 00:24:36,000 --> 00:24:37,000 File path is very simple. 507 00:24:37,000 --> 00:24:40,000 In the same working location I have sample dot txt file. 508 00:24:40,000 --> 00:24:42,000 So this is the same file. 509 00:24:42,000 --> 00:24:46,000 It is present in my uh same folder location that is functions. 510 00:24:46,000 --> 00:24:49,000 So I'm just going to go ahead and call this. 511 00:24:49,000 --> 00:24:57,000 Then I'm going to use word underscore frequency is equal to count underscore word underscore frequency. 512 00:24:57,000 --> 00:25:01,000 And then I'm just going to give the file path okay. 513 00:25:01,000 --> 00:25:03,000 So this will basically be my file path. 514 00:25:03,000 --> 00:25:09,000 Now after this I will just go ahead and print the word frequency I see each and every thing is done. 515 00:25:09,000 --> 00:25:14,000 Let me execute and always make sure guys the indentation is the main key thing many people may face. 516 00:25:14,000 --> 00:25:20,000 Problem if your indentation is not correct okay, so now if I go ahead and execute it uh cannot access 517 00:25:20,000 --> 00:25:23,000 local variable word where it is not associated with a value. 518 00:25:23,000 --> 00:25:27,000 So uh let's see where is the error. 519 00:25:27,000 --> 00:25:31,000 So what frequency of word uh frequency of file path. 520 00:25:32,000 --> 00:25:37,000 Um, if I'm going inside this particular function inside this, it is going to forwards. 521 00:25:37,000 --> 00:25:38,000 Inward. 522 00:25:38,000 --> 00:25:38,000 Okay. 523 00:25:38,000 --> 00:25:39,000 Uh, okay. 524 00:25:39,000 --> 00:25:40,000 It should be opposite. 525 00:25:40,000 --> 00:25:41,000 Okay. 526 00:25:41,000 --> 00:25:44,000 So I'll just go ahead and write this because I have to access words. 527 00:25:44,000 --> 00:25:46,000 So here you can see hello is present. 528 00:25:46,000 --> 00:25:47,000 One word is present. 529 00:25:47,000 --> 00:25:49,000 Everything is present one okay. 530 00:25:49,000 --> 00:25:52,000 So let me just go ahead and save it and let me write again. 531 00:25:52,000 --> 00:25:54,000 Crush okay. 532 00:25:54,000 --> 00:25:56,000 So crush is present two times. 533 00:25:56,000 --> 00:25:59,000 So if I go ahead and execute I should be getting crush two times. 534 00:25:59,000 --> 00:26:05,000 So here is crush Okay, a simple example of a function to read a file and count the frequency of each 535 00:26:05,000 --> 00:26:05,000 word. 536 00:26:05,000 --> 00:26:09,000 So here we have taken a sample file and we have read it uh in the read mode. 537 00:26:09,000 --> 00:26:11,000 And we have counted each and every word. 538 00:26:11,000 --> 00:26:12,000 Amazing function again. 539 00:26:12,000 --> 00:26:15,000 And I hope you are learning many things out of it. 540 00:26:15,000 --> 00:26:18,000 Okay, more about the file operations we will be discussing. 541 00:26:18,000 --> 00:26:22,000 There is a separate section that will be coming up as we go ahead. 542 00:26:23,000 --> 00:26:24,000 Now. 543 00:26:24,000 --> 00:26:25,000 final task. 544 00:26:25,000 --> 00:26:26,000 This is for you. 545 00:26:27,000 --> 00:26:29,000 Um, anyhow, I'll be giving you the code. 546 00:26:29,000 --> 00:26:32,000 Okay, so here the question is very simple. 547 00:26:32,000 --> 00:26:34,000 You need to validate the email address. 548 00:26:34,000 --> 00:26:35,000 Okay. 549 00:26:35,000 --> 00:26:41,000 So let's say that you are there is a subscription uh, emails that you really want to get from a company. 550 00:26:41,000 --> 00:26:46,000 Let's say there is a page and people will go ahead and write any email and just click on start subscription, 551 00:26:46,000 --> 00:26:49,000 right if they want the free materials or anything as such. 552 00:26:49,000 --> 00:26:53,000 Uh, now the problem is that someone may not put a valid email address. 553 00:26:53,000 --> 00:26:56,000 So we also need to do the valid email check. 554 00:26:56,000 --> 00:27:00,000 So for this I will already give you this particular code okay. 555 00:27:00,000 --> 00:27:06,000 And you can go ahead and try it out and just try to understand it here I've used every special characters 556 00:27:06,000 --> 00:27:06,000 okay. 557 00:27:06,000 --> 00:27:09,000 It should it should be matching this pattern. 558 00:27:09,000 --> 00:27:09,000 Right. 559 00:27:09,000 --> 00:27:16,000 Like let's say one of my email address is some username at the rate it can be gmail.com. 560 00:27:16,000 --> 00:27:16,000 Right. 561 00:27:16,000 --> 00:27:19,000 So similarly this is my first regular expression right. 562 00:27:19,000 --> 00:27:26,000 It can be between A to Z capital E to z 0 to 9 plus uh then again add the rate will be there. 563 00:27:26,000 --> 00:27:27,000 Again you can have Gmail. 564 00:27:27,000 --> 00:27:28,000 You can have Hotmail. 565 00:27:28,000 --> 00:27:30,000 You can have Yahoo anything as such. 566 00:27:30,000 --> 00:27:32,000 And then finally.com. 567 00:27:32,000 --> 00:27:32,000 Right. 568 00:27:32,000 --> 00:27:38,000 So this will be the entire, uh, matching uh for the regular expression I will talk more about. 569 00:27:38,000 --> 00:27:40,000 Regular expression, uh, as I go ahead. 570 00:27:40,000 --> 00:27:44,000 Now, if I go ahead and check this, you will be able to see it here. 571 00:27:44,000 --> 00:27:46,000 You can see this is my true email. 572 00:27:46,000 --> 00:27:47,000 Um, this is a valid email. 573 00:27:47,000 --> 00:27:48,000 This is not a valid email. 574 00:27:48,000 --> 00:27:50,000 So just go through this and check it out. 575 00:27:50,000 --> 00:27:55,000 Uh, the reason why I'm including some new, new things so that you get excited by just seeing all this 576 00:27:55,000 --> 00:27:56,000 kind of application. 577 00:27:56,000 --> 00:27:59,000 So I hope, uh, you like this particular video. 578 00:27:59,000 --> 00:28:01,000 Uh, this was it from my side. 579 00:28:01,000 --> 00:28:02,000 I will see you on the next video. 580 00:28:02,000 --> 00:28:03,000 Thank you.