WEBVTT 00:01.170 --> 00:03.780 Let's solve the next set of questions. 00:04.050 --> 00:13.080 So the first question is a set one by adding the items from set to accept the common items. 00:13.770 --> 00:22.580 So we want to update this set one with adding values which are not already present in segment. 00:22.600 --> 00:26.670 That is, we want to add the value 60 and 72. 00:27.480 --> 00:31.050 You can use any function, anything any more than you will. 00:32.640 --> 00:37.590 Next question is rhenium key city to location in the following dictionary? 00:37.980 --> 00:42.660 So in sort of city, we want to change this particular key to location. 00:44.130 --> 00:49.650 The third questions change Brad salary to eighty five on from given by conditioning's. 00:49.680 --> 00:56.040 So this is a python dictionary where we have different employees and for each employee we have the name 00:56.040 --> 00:56.850 and the salary. 00:57.180 --> 01:04.380 So we just want to update the salary of the person Gragg to eighty five hundred instead of sixty five 01:04.380 --> 01:04.740 hundred. 01:05.220 --> 01:12.270 So you can thornes, though, we do try to solve these questions and then we will go through the solutions 01:12.270 --> 01:13.020 one by one. 01:22.260 --> 01:25.590 So let's go ahead and solve the first question. 01:26.760 --> 01:38.160 So here we have set one and set to to simply find out the values which are present in set one and not 01:38.160 --> 01:39.900 present in said two. 01:40.260 --> 01:42.660 We can find out the symmetric difference. 01:42.900 --> 01:45.720 So let's find out the symmetric difference first. 01:46.530 --> 01:50.140 So let's set one down. 01:51.210 --> 01:51.630 Then it 01:58.860 --> 02:01.290 said, let's see what it is. 02:01.680 --> 02:06.210 So it gives me then 20, 60, 70. 02:06.510 --> 02:10.650 So you can see the values 30, 40 and 50 are common between this. 02:10.890 --> 02:15.570 So we are just getting the values 10, 20, 30 and 60, 70 out of it. 02:15.990 --> 02:20.820 Now, if I want to update this particular thing to the set one, 02:23.760 --> 02:28.560 we can simply say don't update. 02:32.010 --> 02:36.510 So this will simply update the values to secure. 02:37.410 --> 02:38.880 So let's print that one. 02:43.050 --> 02:46.530 So here you can see we have the values in simple. 02:47.040 --> 02:51.420 Instead of updating, you could have also done it this way. 02:51.420 --> 02:55.370 Simply find out the symmetric difference and a sign that does it. 02:56.910 --> 02:58.470 You can follow any method. 02:59.190 --> 03:05.790 Submitting the Prince update is an emplace operator, so it will updated then and then you won't need 03:05.790 --> 03:06.870 to reassign it. 03:09.270 --> 03:14.790 The next problem is to rename the key city to location. 03:17.670 --> 03:21.870 So for this, we can simply apply a simple method. 03:21.870 --> 03:25.850 We can simply create a new key in this particular dictionary. 03:25.860 --> 03:26.820 So how do we do that? 03:26.820 --> 03:27.840 We see a sample 03:31.350 --> 03:38.970 and we create a new key that this location and is inside this. 03:38.970 --> 03:42.060 We want to put in the value which is present in Sydney. 03:42.750 --> 03:48.990 So how do we get the value, present density and simultaneously drop this also? 03:49.260 --> 03:57.120 So what you would have done is you could have removed this key itself and then created a new key and 03:57.120 --> 03:58.050 added the value. 03:58.290 --> 04:03.510 Or you can do both operations simultaneously using the WAP operation. 04:03.720 --> 04:08.810 So we can simply assign some value sample. 04:10.110 --> 04:19.080 They thought up and inside this we give the city. 04:19.440 --> 04:27.750 So what happens is we are able to form the value city from the key value per city, and then we are 04:27.750 --> 04:29.510 copying this key from here. 04:29.520 --> 04:34.680 We what has a property of returning the value to us. 04:34.860 --> 04:39.510 So when we return used a pop operation, it will return the value. 04:39.510 --> 04:44.610 And simultaneously, when we are assigning it to the new key, which we are trying to create, which 04:44.610 --> 04:51.330 is location, it is simply adding the globe, the value to this particular key. 04:51.630 --> 04:55.620 And hence, when we print the sample in the queue, 05:00.030 --> 05:02.370 we get the updated value of location. 05:03.810 --> 05:07.110 So you can use this pop operation in this particular month. 05:07.590 --> 05:09.960 And there could have been other solutions also. 05:10.140 --> 05:11.670 You can try any of those. 05:13.650 --> 05:20.490 Next is where we want to simply update the salary of Bragg. 05:21.030 --> 05:28.650 Now, notice here that this is a dictionary and this dictionary has multiple keys. 05:28.950 --> 05:32.670 These multiple keys are in one and two and three. 05:34.380 --> 05:39.360 And each amp has another dictionary as its value. 05:39.570 --> 05:43.680 So let's try to retrieve the value first and then we try to update it. 05:44.070 --> 05:45.780 So let's give these of the. 05:48.690 --> 05:53.900 And we want to get the value of Bragg, which is under three. 05:53.910 --> 05:55.170 So let's get three. 05:59.220 --> 06:00.030 Let's run this. 06:00.540 --> 06:03.330 So we get named Bragg salary. 06:03.480 --> 06:04.590 Sixty five hundred. 06:05.670 --> 06:12.810 Now, inside this further, what I want to do is I want to I don't want to get the name, but I want 06:12.810 --> 06:13.830 to get the salary. 06:14.370 --> 06:17.640 So let's go for that and get the salary of this person. 06:19.890 --> 06:21.110 When we run this, we get to. 06:21.290 --> 06:27.290 Five hundred now you can simply assign the value what you want, those nine to fifty five hundred. 06:28.160 --> 06:35.600 And now when you run these numbers, you can see the value has been updated. 06:37.340 --> 06:45.930 So you can use this method to reassign the values or you can also see what the values are, and I truly 06:46.020 --> 06:51.290 believe you can go inside different data structures to access a particular value also. 06:54.470 --> 06:55.940 That's it for this one. 06:56.180 --> 07:03.440 You have a lot more similar problems present in the practice sessions, which until practice questions 07:03.440 --> 07:05.900 which are present at the end of the module as well. 07:06.320 --> 07:08.180 So you can refer to those also. 07:08.840 --> 07:09.350 Thank you.