WEBVTT 00:01.230 --> 00:02.320 Hello, everyone. 00:02.730 --> 00:11.280 In this particular session, we would learn about creating a new file on how we will be homophily, 00:11.280 --> 00:13.330 how we can write that will file. 00:13.710 --> 00:20.880 So this particular session is completely devoted on the file handling, which we will be doing so that 00:21.210 --> 00:26.070 you get to know how you can open different files right through a file, read from a file, all those 00:26.070 --> 00:26.400 things. 00:27.510 --> 00:34.430 So the very first thing which I would like to show you is this ID, which is final. 00:35.280 --> 00:39.150 It comes along with the Anakonda installation. 00:40.200 --> 00:43.560 If you want, you can install any other IVI. 00:43.770 --> 00:45.630 There is no restrictions. 00:46.080 --> 00:49.760 Most of the IDs look a little different. 00:49.860 --> 00:57.180 Just same kind of things are present in all the IDs you will have on a video which will just allow you 00:57.180 --> 00:59.290 to type something and get them out footer. 00:59.430 --> 01:03.690 So for example, I can see something like print. 01:06.740 --> 01:09.110 One, two, three, and. 01:10.640 --> 01:19.130 I'll put this in quotes and I can simply run this and it will give me an output indispensably. 01:20.820 --> 01:28.980 In case of Python, we can have an interactive look also with what we can do is we can directly use 01:28.980 --> 01:34.240 this console here so you can increase the size, decrease the size of it. 01:34.260 --> 01:35.700 You can do anything like that. 01:36.090 --> 01:43.380 Now, what I am doing is I am using this control console here so I can do something like twenty three 01:44.010 --> 01:46.980 plus ninety eight and it gives me the desired. 01:47.400 --> 01:50.460 I can declare a variable c E is equal to. 01:51.420 --> 02:01.110 Fifty six, I say be is equal to two, and I can see E plus V, so it gives me the output corresponding 02:01.110 --> 02:01.360 good. 02:01.380 --> 02:04.290 So this is how an interactive console works. 02:05.520 --> 02:07.740 Now, let us do one thing. 02:08.010 --> 02:14.430 Let us first of all, create a file and then we will see how we can work with a particular. 02:17.920 --> 02:26.980 So for this particular session, I have needed a folder, so let me dig this file and see this file 02:26.980 --> 02:34.840 to that particular folder directory so I see you and then I will go to that particular folder of mine 02:35.050 --> 02:37.600 and I will say it was like old. 02:40.820 --> 02:41.570 So. 02:47.420 --> 02:52.160 This is the fault of Bichel and inside, by God, I'm creating. 02:53.620 --> 02:54.490 Read. 02:55.880 --> 02:56.710 Right. 02:58.700 --> 03:07.160 Don't fight, don't fight is the extension for any fight and fight which we will be creating so we can 03:07.160 --> 03:13.640 create a file on this file, will actually help us in running the fight. 03:14.570 --> 03:19.880 So let's create this particular faithful's, so I'll see you. 03:20.390 --> 03:22.250 And this file has been created. 03:23.850 --> 03:31.800 Now, what I can do is I can simply go ahead and start writing and creating my file. 03:33.190 --> 03:35.230 So let's get rid of this first. 03:37.020 --> 03:45.120 Now, there are a few important functions and important things which we do, why the Dingle file and 03:45.120 --> 03:46.210 why the go fight? 03:46.770 --> 03:50.640 So the first thing which we will do is we will open the file object. 03:51.210 --> 03:53.470 Now, how do we open a file object? 03:53.820 --> 04:00.530 We will create a file object, see, and I will say open. 04:00.870 --> 04:03.840 This means that I wanted to open a particular file. 04:04.970 --> 04:09.020 Now, when you see when I write open, it gives me two options. 04:10.520 --> 04:16.820 The one first one is saying F, which means it is a function and the second one is key, which means 04:16.820 --> 04:22.130 that I want to create a fuel, I want to use the existing function open. 04:22.880 --> 04:24.360 So I click on this. 04:25.010 --> 04:31.700 Now, if you see it shows me the difference of of Fatmeh Goes, which are presented this particular 04:31.700 --> 04:32.200 function. 04:32.690 --> 04:35.300 So you can see I can provide the five. 04:36.670 --> 04:38.160 I can give them more. 04:39.780 --> 04:40.690 And different other. 04:41.910 --> 04:45.710 So what I do is there are two important things which I need to hear. 04:46.230 --> 04:50.810 The first thing is the name of the file which I want to open. 04:51.480 --> 04:55.590 So the name of the files see the more one. 04:57.390 --> 05:01.930 Not the I want to create a demo and de. 05:03.880 --> 05:07.610 And I want to open it in a right. 05:08.770 --> 05:14.860 That is, I want to right off right now, there are different modes of operation, so let us read about 05:15.160 --> 05:16.540 different modes forced. 05:20.450 --> 05:28.010 So these are the three types of actions which we can perform when fight, the first action is to open 05:28.010 --> 05:37.060 a file in, read more, read more means that we want to read the fight and then we are leading the fight. 05:37.130 --> 05:45.590 We are not modifying the fight, which means that when I am reading a fight, one of my thinking also 05:45.590 --> 05:49.270 did a fight because we are not making any changes to the fight. 05:49.280 --> 05:52.440 So it will be convenient for both of us. 05:53.300 --> 06:01.590 The second one is W W stands for strike mode is the right. 06:02.240 --> 06:08.690 It means that I want to write a fight, that is, I want to create a new fight. 06:09.350 --> 06:13.000 So I will use W.M. whenever I want to create a new fight. 06:14.830 --> 06:18.260 So that is what we use for writing the fight. 06:18.850 --> 06:27.720 Now, that is the third option of being witches, then we will go right back to pre existing fight. 06:28.120 --> 06:31.030 That is, I don't want to override the five. 06:32.170 --> 06:37.650 I want to add some content to my fight, so that is when the use of pain. 06:38.470 --> 06:46.810 So in this case, when we are trying to write, when we are trying to create a new fight, we will say 06:47.050 --> 06:49.630 w OK, so let's go back. 06:50.440 --> 06:55.690 So this is the fight which I was trying to read and I'll see W. 06:57.240 --> 07:05.910 Which means that I want to light a fire, so I will just run this particular home and when I run this 07:05.910 --> 07:07.740 code, you can see. 07:09.450 --> 07:18.930 Run, and when you run the sport, you don't see anything coming out of you because I have not given 07:18.930 --> 07:22.120 any print statements, that is why I'm not giving any output here. 07:22.560 --> 07:23.930 Let's go back to the follow. 07:24.850 --> 07:32.650 Now, if you go to the folder here, you see that one spying has been created and the deed of Modify 07:32.650 --> 07:36.990 it is also for today and the name is Demo one, and it is a blank slate. 07:37.240 --> 07:39.550 So we have created a blank file here. 07:40.940 --> 07:42.320 Now, let me close this. 07:44.590 --> 07:45.970 And look, we believe this. 07:57.600 --> 07:57.900 OK. 07:57.990 --> 08:01.890 Seems like the file is open in fighting, so let's go back. 08:02.520 --> 08:04.490 Let's do one other thing. 08:05.040 --> 08:08.110 Let's try to read the fight. 08:08.220 --> 08:10.230 OK, so we'll see are. 08:12.070 --> 08:13.510 OK, we'll see. 08:13.800 --> 08:18.820 Ah, and we will change the name to something which is not existing, so we say that more than. 08:20.150 --> 08:22.100 OK, and now we will run this. 08:22.280 --> 08:27.980 So when we run this, you can see that we got this particular error, which is saying that no such file 08:27.980 --> 08:29.210 or directory is formed. 08:29.960 --> 08:37.640 So this means that if you have that file existing Vaillancourt, if the file is not existing and you 08:37.640 --> 08:41.300 run a reed operation, then it will give you an error. 08:41.810 --> 08:48.140 Now, if I again go to the demo to change it to Demo one and I will again read the fighting. 08:48.140 --> 08:50.840 Now in this case, the file is existing. 08:50.840 --> 08:51.720 You can see the demo. 08:51.720 --> 08:53.560 One file is already present here. 08:54.580 --> 08:58.780 So we will run this and now you can see that. 09:02.850 --> 09:05.820 Here you can see that the cell was run. 09:07.200 --> 09:11.380 Now, let us see a few more options which are present here. 09:12.420 --> 09:17.820 So the first option which I have is I can check if the mode in which a file is open. 09:18.300 --> 09:20.160 OK, so how we can do this? 09:20.160 --> 09:21.180 We would save print. 09:23.440 --> 09:28.270 And inside Prince, we will see which is the final object. 09:30.210 --> 09:37.050 And with defy logic, we use a lot of freedom and quality attribute, which is more. 09:38.220 --> 09:44.680 So each file object will have some functions and some attributes associated with it. 09:45.240 --> 09:48.590 So the flip side, which is associated is Cold War. 09:48.810 --> 09:51.420 And when I use this particular more. 09:52.930 --> 09:59.290 I can see the mode in which this is running, so let me do one thing, I need a screen here. 10:01.350 --> 10:07.310 I see mode, so this show me that this is the mode in which the file is running. 10:10.240 --> 10:20.500 Let me add a few more lines of code, so this is what the next what we have is readable so we can check 10:20.500 --> 10:24.310 if a file is readable in nature or not, so we can save the. 10:27.660 --> 10:29.680 And this is the function for the book. 10:30.060 --> 10:33.400 Similarly, when James is to read. 10:36.130 --> 10:37.520 Is readable. 10:38.180 --> 10:40.510 OK, next is. 10:44.580 --> 10:47.100 Will change this to Rightmove. 10:57.360 --> 10:59.970 And this would also change to. 11:03.020 --> 11:03.970 Right in the. 11:09.880 --> 11:14.650 So for now, let's run only this much and we'll run this. 11:16.630 --> 11:19.870 So this is giving an error that. 11:20.960 --> 11:24.200 We have this move, this is if not more. 11:34.010 --> 11:36.820 Read, this is read. 11:37.430 --> 11:38.730 Now let's run it again. 11:39.680 --> 11:42.250 So now you can see this is the output which we get. 11:42.740 --> 11:43.770 What is the output? 11:43.790 --> 11:51.560 It says the move is ah, that is the mode in which we open the file that we are opening the file in 11:51.560 --> 11:52.190 the read. 11:53.270 --> 11:56.140 Next, when we are opening the filing, read more. 11:56.170 --> 11:59.410 That means that this file should be readable in nature. 11:59.420 --> 12:00.750 I can easily read this. 12:01.340 --> 12:08.080 So for this it is showing for readability, showing on Sarastro and for you don't rideable. 12:08.090 --> 12:11.870 It is showing false, which means that I can override this file as of now. 12:13.510 --> 12:15.250 OK, now. 12:17.250 --> 12:23.150 Next thing what we can do is next, let us open this file in right now. 12:23.440 --> 12:25.960 OK, this we have seen for more. 12:26.310 --> 12:29.150 So now let's read this in a right more. 12:29.160 --> 12:31.350 So let me just copy this. 12:32.370 --> 12:34.890 And let me comment this also. 12:36.040 --> 12:40.020 So I just commend the South for this here. 12:45.560 --> 12:47.900 And I'll post it here again. 12:50.500 --> 12:53.700 And let me open this file in right now. 12:55.530 --> 13:03.390 So please know that this particular entire thing, this is a comment, this is basically a string, 13:03.390 --> 13:09.230 so it will act as a comment here so you can use this as a common goal. 13:09.660 --> 13:15.340 So when you will be running this particular find, what you can do is you can just remove these goods 13:15.840 --> 13:21.740 and it will change this into a comment on the comment so you can use it that way. 13:23.090 --> 13:26.250 So I'll open this in a right mood, I'm opening this fight in the right. 13:27.290 --> 13:35.000 So now what I'm trying to do here is when I'm opening this violent mood, I want to write something 13:35.000 --> 13:36.180 to this particular file. 13:36.210 --> 13:37.720 So let me write something. 13:38.270 --> 13:45.080 So let's see if you don't write this will actually write to my afine. 13:46.710 --> 13:50.530 So if you don't right, and inside this, what do I want, right? 13:50.550 --> 13:57.960 I want to write a the new line, so I use the passion for new life and I want to write. 13:59.250 --> 13:59.980 Hello. 14:00.880 --> 14:07.620 Well, that should be the first word, hello, world, and I want to give zation again so I won't be 14:07.620 --> 14:08.400 joining the line. 14:10.160 --> 14:11.960 So this is what we have here. 14:11.990 --> 14:15.260 OK, so now what I can do is I can simply run this. 14:16.440 --> 14:23.790 So when I ran this, it gives me the output that the final mode is like readability is false, right? 14:23.820 --> 14:24.540 Well, it's true. 14:24.570 --> 14:29.370 Now, let's go back to the file again and let's see what happened to a file. 14:30.270 --> 14:31.380 So this is a file. 14:32.430 --> 14:34.950 And I opened this file on. 14:37.370 --> 14:39.240 Nothing really happened to it. 14:40.920 --> 14:43.050 Let's go back and see what happened here. 14:43.560 --> 14:47.270 This is them on board the floor right now. 14:48.150 --> 14:52.490 We have written to this file, but we have not seen that changes. 14:52.500 --> 14:53.820 When will this change? 14:53.820 --> 14:56.560 We see when we close the fight. 14:56.670 --> 14:58.120 So we will close the final. 14:58.530 --> 15:03.730 OK, so we can see if you don't close, this will close my fight. 15:04.200 --> 15:06.040 So what we do, we open the fight. 15:06.070 --> 15:07.500 So what is the process? 15:07.830 --> 15:08.850 The process is. 15:12.480 --> 15:18.600 You will open a file that is the first step, second step, you will write in the file and third step 15:18.600 --> 15:19.710 you will close the fight. 15:20.220 --> 15:22.590 These are the three steps that you will be having. 15:23.470 --> 15:25.110 So let me run this now. 15:26.820 --> 15:34.410 And I'll go back, I'm here again, I will go to this, and now it is showing see, it is also showing 15:34.410 --> 15:38.420 the slashing that is next line, which I have given them. 15:39.000 --> 15:39.870 Now I bouba. 15:42.490 --> 15:44.710 So this is our fight. 15:45.070 --> 15:48.640 So now what we will do is we have returned to this fight. 15:48.850 --> 15:52.630 Now here I am able to write only one line now like this. 15:52.630 --> 15:54.370 I want to write multiple lines. 15:54.370 --> 15:58.240 What I can do is I can give more accurate, Heidi. 15:59.440 --> 16:02.410 This is Second-line. 16:07.510 --> 16:10.720 This is called lying. 16:12.150 --> 16:13.800 And I can run this. 16:15.810 --> 16:25.740 And I think that and this will run I go back to my demo when I close this and go back to this folder, 16:26.580 --> 16:30.160 and here you can see that the line has been updated. 16:30.870 --> 16:34.890 So what we have done is we have successfully written the word fight. 16:36.390 --> 16:40.830 They have successfully turned into a fire, but still there is something missing. 16:41.340 --> 16:46.110 I am able to write to my fire, but I'm able to write to that fire only once. 16:47.200 --> 16:50.170 If I tried to write on top of it again. 16:52.080 --> 16:56.750 See, we tried this again, I do another I tried. 17:00.270 --> 17:01.290 And I see. 17:05.990 --> 17:07.400 Hello again. 17:09.680 --> 17:12.680 And I did give us a potato here again. 17:13.980 --> 17:20.160 And you give a lot of thought and give us slashing, so this will show that I have changed the line 17:20.160 --> 17:23.430 again, so now I will again see a shift in the. 17:25.660 --> 17:27.550 And I go back to my follow. 17:28.600 --> 17:34.420 Inside with that, I go to them will one, and you can see that it has five. 17:35.570 --> 17:43.430 OK, so I can simply use the right function to write different lines of code to my vehicle. 17:43.920 --> 17:46.630 OK, now let's try some more thing. 17:48.360 --> 17:53.980 Now, let me go back now, I have done this, I have done this once. 17:54.240 --> 17:57.590 Now, if let me make some changes, OK? 17:59.100 --> 18:00.990 Now, after running this. 18:03.650 --> 18:05.590 Let me comment this out again. 18:07.960 --> 18:09.490 Let me get my daughter. 18:15.630 --> 18:16.050 OK. 18:19.250 --> 18:22.940 I open this file, I have done this illegally, Ecuador three. 18:25.100 --> 18:27.050 And I'll read something else here. 18:27.350 --> 18:29.500 So now this time, let's write. 18:32.460 --> 18:36.120 Adding new lines. 18:37.660 --> 18:41.620 So let us see, does it I've new line here to are all fine. 18:43.080 --> 18:53.130 So let's save this, let's run this and we go back, we go to this, and now what we have written earlier 18:53.130 --> 18:54.850 has completely gone away. 18:55.770 --> 18:57.630 So we have lost what we had. 18:57.630 --> 19:00.690 But again, so this is what right does. 19:01.290 --> 19:10.080 Right will allow you to make changes to the fight, but it will also override the fire when you know 19:10.080 --> 19:11.260 the same thing again. 19:11.940 --> 19:17.880 So if I want to write the will file again and again after one thread is closed, then what I will have 19:17.880 --> 19:25.500 to do is I even have to obtain the Google fight so I can operate on my file like this. 19:25.500 --> 19:29.190 I will have to open to my file to do it again and again. 19:30.110 --> 19:39.920 OK, so let us try to do that, but first, let's discuss about another concept which is presented by. 19:41.130 --> 19:44.610 So we closed this file again and we go back. 19:47.100 --> 19:49.350 So you can see that it has been defeated. 19:49.680 --> 19:53.220 Now let us see one more concept that would destroy planes. 19:53.700 --> 19:57.230 So we aim for the first function, which we have is right on. 19:57.330 --> 19:59.780 The function that we have is right lines. 20:01.090 --> 20:02.290 So let's get this. 20:05.610 --> 20:11.970 So what will happen, they will try to fight this, right will again try to define. 20:13.080 --> 20:16.200 Now, this is the next one, left and right lines. 20:19.900 --> 20:21.720 So now this will guidelines. 20:22.090 --> 20:28.210 So what I can do is I can add more detailed work, so there has to be an. 20:28.900 --> 20:30.460 So this is right lines. 20:32.950 --> 20:36.260 And I have a lot of data here, so let's see what happens now. 20:36.670 --> 20:38.560 And let me add another red line. 20:38.560 --> 20:40.730 So let me give the straight lines only. 20:43.100 --> 20:45.990 OK, and now let's run and see what happened. 20:46.070 --> 20:50.900 So I say control, as I say, finger to run this and I go back to. 20:51.930 --> 20:59.580 My file again, and you can see that it has done what I have instructed to do, I have got Diavik new 20:59.580 --> 21:03.330 lines, I've got the HelloWallet, I've got the next one. 21:03.870 --> 21:04.950 So I've got all the. 21:06.860 --> 21:08.840 Data, which I have, I did my flight. 21:10.140 --> 21:22.830 Now, let's go ahead and try to think on how we can I think from let us say we have some kind of a breather 21:22.890 --> 21:23.690 or legacy. 21:23.700 --> 21:27.120 We have some other stories point. 21:27.720 --> 21:32.460 We do not always have details given to it by the streams. 21:33.420 --> 21:39.010 We may have the day the in a particular list or some other data structure. 21:39.360 --> 21:42.060 So for that, we can use right lines. 21:43.360 --> 21:49.960 OK, so let us get this, so let me get my stuff if you don't open. 21:51.560 --> 21:53.540 And I know this. 21:54.700 --> 21:55.910 And I was. 21:57.220 --> 22:00.100 Go beyond a common diable one. 22:01.280 --> 22:03.260 And look and see if we're going to open. 22:07.390 --> 22:09.520 Now, this time, what I want to do is. 22:10.710 --> 22:13.650 I want to create something, so let's say my. 22:15.710 --> 22:16.370 Data. 22:17.950 --> 22:20.270 And in my data, I have. 22:20.290 --> 22:28.690 Let me give a list, so let's give a list of different strings so we can work this one, we need two 22:28.690 --> 22:29.620 different strings. 22:34.500 --> 22:36.000 So we have this. 22:37.730 --> 22:38.190 And. 22:40.010 --> 22:42.370 That's hippopotami here. 22:44.300 --> 22:45.680 Will my here? 22:48.110 --> 22:49.460 So we have one. 22:51.300 --> 22:51.720 Do. 22:52.740 --> 22:54.450 And three strings in this one. 22:56.090 --> 22:58.910 Now, latest news. 23:01.770 --> 23:06.330 Another thing, so let us use don't, right, straightforward. 23:09.070 --> 23:11.630 Let's see if we can do this with effort, all right. 23:14.570 --> 23:16.440 And we give my daughter. 23:20.410 --> 23:22.690 OK, and we are doing it for post. 23:27.400 --> 23:28.930 Now, I will run this. 23:30.190 --> 23:36.200 So here you get an error saying that the argument must be string model. 23:37.060 --> 23:43.720 So this means that when I use it for Lord right, it is expecting a string and it will not work on the 23:44.020 --> 23:44.560 list. 23:44.710 --> 23:47.040 So now let us try the same thing. 23:48.190 --> 23:51.340 With a four door, bright lights. 24:06.320 --> 24:08.510 OK, now let me run this. 24:11.480 --> 24:12.980 So let me get back. 24:14.560 --> 24:15.730 Openly one. 24:17.110 --> 24:21.700 And here you can see that it has taken the data from the list and did it way. 24:22.840 --> 24:29.230 So now you can you know, if you think that is the first thing that we have three modes, the first 24:29.230 --> 24:31.880 mode is read, then right then up. 24:31.900 --> 24:36.190 And we have two more modes that is read. 24:36.190 --> 24:37.270 Vanity, right. 24:37.270 --> 24:40.600 Vanity and the appen vanity. 24:40.780 --> 24:46.820 So these virginities ones, these are basically for some other data, talk to some of the fight. 24:47.470 --> 24:53.110 So in case you have to explain, you can simply use a read, write nothing. 24:53.410 --> 25:01.080 But in case you are working on some other file, you can you should use a right vanity and like a read 25:01.100 --> 25:01.560 binary. 25:01.690 --> 25:06.550 So instead of writing on, you will be writing or B the. 25:08.270 --> 25:11.250 So this is what we can do out of it. 25:11.570 --> 25:17.140 The next thing is let's use a law to write this. 25:17.330 --> 25:24.170 So what we can do is we can simply use a loop to write the data using the right option. 25:24.350 --> 25:27.320 So what we can do is instead of doing this entire thing. 25:35.390 --> 25:39.050 We can just do something like this. 25:42.670 --> 25:43.360 And. 25:44.630 --> 25:57.860 Instead of doing this, you can say you can get this, you can save for lying in my data. 26:02.590 --> 26:03.820 If all right. 26:05.090 --> 26:05.540 Nine. 26:08.150 --> 26:15.530 Now, what this does is it will be played on top of my data, the list, and it will write the data 26:15.530 --> 26:18.620 to my file line by line for them, one line by line. 26:19.050 --> 26:24.260 OK, so let me use if I do them so that you don't get confused which file we are writing. 26:24.260 --> 26:27.290 And also I just see this and run this. 26:27.650 --> 26:28.570 I get back. 26:28.700 --> 26:29.330 This is my. 26:29.780 --> 26:32.930 This is then what do I hear the data has been. 26:35.620 --> 26:38.950 Right now, the next thing which we have. 26:40.360 --> 26:50.260 Is the use of the Abang property, though, so a penguin just walking the same way. 26:50.590 --> 26:52.890 So let me get back here. 26:54.830 --> 26:55.910 Get this. 27:00.650 --> 27:01.970 Flows this. 27:06.110 --> 27:14.630 But this year and inside them, we'll go and change it to a fan and I'll add something more to it so 27:14.630 --> 27:17.600 that you'll get to know where we have changed. 27:18.140 --> 27:25.000 So I'll add one more string using a pen now. 27:25.700 --> 27:28.150 So this will show that we are using a pen here. 27:29.190 --> 27:30.500 So we are writing to it. 27:32.450 --> 27:35.900 And then just run this and I'll go back. 27:36.880 --> 27:38.170 This is my Nemoto. 27:39.590 --> 27:48.410 So you can see this, it has been delayed just along with it, so it has added the data to the file, 27:48.410 --> 27:50.040 which was already existing. 27:50.600 --> 27:53.380 Everything is remains just the same. 27:53.870 --> 27:54.890 You can use. 27:54.890 --> 28:02.220 Right, and write lines in the same way, the way we were using it with the like five. 28:05.380 --> 28:10.730 Now, below, what we have done is writing to a fire or a pending bullfight. 28:11.650 --> 28:17.350 Now, these are a few things which you will be doing once you have read the data, inworld on the data. 28:17.680 --> 28:21.160 So the very first thing that you will be doing is reading the fight. 28:21.490 --> 28:25.030 So let us see how we can actually read from the fight. 28:26.190 --> 28:36.360 So to read from a file, we have three functions, which will be the first function will be read next, 28:36.360 --> 28:41.070 will be read in line and the third one will be read the lines. 28:42.270 --> 28:48.020 OK, so this is the demo to files, and you can see this is the data which is already present here. 28:48.060 --> 28:49.830 I just put in a you. 28:51.400 --> 29:00.160 And I see this fight and I close this one, I go by and this is the actual base where I was. 29:00.970 --> 29:02.890 Now I coming this. 29:04.150 --> 29:09.520 Well, the people I know, again, I will read my later. 29:10.440 --> 29:17.160 So how can I be my little also for reading the dialogue to open the filing read, so I say. 29:19.040 --> 29:20.470 I don't need this now. 29:22.280 --> 29:23.660 So you get rid of this. 29:24.160 --> 29:26.340 Now I want to read the data. 29:26.780 --> 29:30.260 So what I will do is I get rid of this also for now. 29:32.320 --> 29:38.130 So we will simply read it for me and I will not give anything here. 29:39.460 --> 29:39.910 OK. 29:39.940 --> 29:41.140 And then I was losing. 29:42.440 --> 29:44.960 Now I want to bring those. 29:46.160 --> 29:52.550 So let me get this data into the data and I'll print data. 29:53.700 --> 29:55.380 Or let's bring in later. 29:56.370 --> 30:02.460 To show that we have the president after closing the files is going to bring. 30:03.860 --> 30:04.240 The. 30:06.020 --> 30:14.360 So now I run this CNN on this, you can see I was able to successfully lead the fight and now I have 30:14.360 --> 30:17.140 read all the lines in the Firebrace. 30:17.930 --> 30:24.110 Now, it is very convenient if I want to read all the lines of the data, but in case I don't want to 30:24.110 --> 30:30.980 read all of the lines, but only a few lines or only lines, one by one. 30:31.490 --> 30:35.960 In that case, what we can do is we can use the line. 30:36.050 --> 30:37.810 So let us see how we can do that. 30:38.510 --> 30:43.480 So I just coming this out again, I get this all. 30:46.900 --> 30:49.750 And let me tell you, the space and the. 30:53.520 --> 30:55.380 Based appeal now. 30:57.320 --> 30:57.980 We see. 31:01.030 --> 31:01.960 What do we want to do? 31:01.990 --> 31:03.850 We have open the file in the. 31:05.240 --> 31:09.770 Now, next, what we want to do is we want to read the lines of says simply. 31:10.880 --> 31:11.360 Ferenc. 31:14.880 --> 31:16.170 If you don't need. 31:20.960 --> 31:22.350 And get rid of this. 31:26.910 --> 31:28.020 Let me do this. 31:31.010 --> 31:32.240 Multiple times. 31:34.280 --> 31:36.740 OK, so let's run this. 31:38.650 --> 31:45.860 What this does is it basically got the data, so it read the first line. 31:45.880 --> 31:47.060 This is the first line. 31:47.890 --> 31:54.610 This is the same second line for line and footling it read all those things. 31:55.000 --> 31:59.740 So let me just point this out so that you will see what it has been doing. 32:00.550 --> 32:01.700 There is a. 32:03.250 --> 32:06.430 So here this is the blunt language is the first line is blan. 32:07.840 --> 32:10.950 This is the second and the fourth line, which is hello. 32:12.430 --> 32:15.940 This is the second, first and third line. 32:17.670 --> 32:21.510 And this is all four lines plus four lines. 32:22.800 --> 32:29.880 So you can read all the lines one by one like this, so if I keep adding this, it will probably print 32:29.880 --> 32:31.430 all the lines which are available. 32:31.650 --> 32:33.180 So it has done the same. 32:33.690 --> 32:39.600 OK, now let's say we have the leg exhaust, all the number of lines here. 32:41.290 --> 32:47.590 So I'm sure that my fire did not contain these many number of lines and none will run this again, so 32:47.650 --> 32:49.180 it gave me a blank space. 32:49.330 --> 32:53.820 So it will continue to read even though there is no legal presence. 32:54.430 --> 33:01.930 OK, so we need to have some mechanism by which we can stop it so you can basically check how many lines 33:01.930 --> 33:06.000 are present and then you can run this red line on top of. 33:07.650 --> 33:15.760 So a more convenient way would be what you can do is you can use read the lines. 33:16.410 --> 33:18.290 So what will read line do? 33:21.270 --> 33:30.660 Red line will again help you to read the details using the lines so I can simply say these lines and 33:30.660 --> 33:32.840 I can get rid of this entire thing. 33:34.890 --> 33:35.400 Lycan. 33:36.950 --> 33:42.590 Bring this so here you can see that it has read the line and it has also read. 33:44.220 --> 33:49.000 These datapoints, these next line present here. 33:49.500 --> 33:54.690 Now, one more thing to notice here is when we used Reline. 33:55.870 --> 33:57.600 It red line one by one. 33:58.990 --> 34:01.480 It rented one line, everything. 34:02.300 --> 34:10.450 And when you will read lines, it gave me back a list containing all the lines in separating this. 34:12.600 --> 34:16.000 So this is how we can actually get the number of lines. 34:16.200 --> 34:18.810 So what I can simply do is I can get Dehlin. 34:21.050 --> 34:22.190 Audrey realigns. 34:23.830 --> 34:29.020 And I have done this so you can see that there are global age lines and then I can read line or I can 34:30.310 --> 34:34.660 use this read lines and then get the data in to let us see. 34:36.560 --> 34:37.310 Data. 34:39.650 --> 34:44.650 And I'll get rid of this and then from Dubai, again, simply say bring. 34:46.810 --> 34:50.380 Data on the index see five. 34:51.250 --> 34:54.040 And this is one see? 34:55.060 --> 34:57.880 Eight is the eighth one. 34:57.910 --> 35:00.590 Now, this does not exist seven. 35:01.600 --> 35:02.900 It shows the seventh one. 35:03.160 --> 35:05.080 So this is how we can run this. 35:05.890 --> 35:11.290 OK, so this is all we can read and write data from a file and. 35:12.540 --> 35:14.230 Read the dull accordingly. 35:14.630 --> 35:22.200 OK, now one more thing, what we can do is we can use the for loop to read this particular date on 35:22.200 --> 35:24.510 weekends and use the. 35:26.390 --> 35:34.020 Makes sense for that, so we can simply say we can simply create a volume and we can use driveline. 35:39.620 --> 35:41.600 So what we can do is. 35:43.910 --> 35:45.470 We can simply say. 35:52.880 --> 35:53.660 For. 35:55.580 --> 36:01.780 You in range, say seven. 36:03.320 --> 36:04.510 I want to bring. 36:10.970 --> 36:13.650 And for the nine. 36:17.610 --> 36:21.650 And so it will be each and every line, one by one. 36:21.920 --> 36:32.070 So this is how you can easily read the files, you can easily read and write text files now how we can 36:32.330 --> 36:33.550 read and write. 36:34.010 --> 36:35.860 Oh, yes, we fight. 36:36.500 --> 36:40.420 So we will be using CSFI files very openly. 36:40.760 --> 36:43.970 Then we will be working with the delphiniums. 36:43.970 --> 36:48.990 So we will be reading files and writing files for the need of names itself. 36:49.010 --> 36:51.960 So let us go ahead and have a look at that as well. 36:54.920 --> 37:03.920 OK, to read and specify what we will be doing so we can do it very simplistic way, using the binders, 37:03.950 --> 37:07.460 libraries or what we will do is we will import Palm Desert Speedie. 37:08.660 --> 37:11.390 The next thing which we will be doing is we will be. 37:12.500 --> 37:19.190 Getting the part of the fight now, we already have a fight present at the store, so I will use the 37:19.190 --> 37:19.670 same. 37:21.420 --> 37:26.550 So I will use the same file from my desktop, so I give the part, so say. 37:27.630 --> 37:35.340 If that is equal to and if I fired you, so I will be giving the Viva. 37:36.610 --> 37:44.530 So my fight is residing at one mine next on Larry King Live divining, so let me see what the filename 37:44.530 --> 37:44.800 is. 37:45.460 --> 37:50.160 So the filename is by data, the CSP. 37:51.370 --> 37:53.050 Now, this is my filing now. 37:53.170 --> 37:58.570 How do I actually read from this, so I will be reading this file into a detail frame. 37:58.570 --> 38:05.770 So I said this is equal to 50 letters from the of Dot V. 38:07.130 --> 38:09.740 Underscore CSB now. 38:10.790 --> 38:14.990 There are several other file extensions also present. 38:15.320 --> 38:20.610 So for them, for all of them, there is a bond US function which will be available. 38:20.930 --> 38:25.440 You can go and search for based on which I would find that you have. 38:26.000 --> 38:27.350 So I have a reason. 38:27.380 --> 38:28.700 So I'm using CSFI. 38:28.700 --> 38:31.670 NTSB is the most mostly used one. 38:31.680 --> 38:34.090 So you will be facing kesby mostly. 38:34.400 --> 38:41.000 So I'm using the PSV and I give the ground races on inside this. 38:41.000 --> 38:41.750 I will give the. 38:41.960 --> 38:44.740 But so the effort. 38:46.090 --> 38:53.800 And along with it, I mean, we don't give a delimiter, so let me just do it this way and how I see 38:53.800 --> 38:56.070 the data is in India not. 38:57.510 --> 39:00.780 Hey, you see the little non-liquid on this. 39:02.140 --> 39:09.610 Now, here you see that the CSP file is having this single column and is giving me a single column, 39:09.610 --> 39:12.070 but I was not expecting to get a single column. 39:12.070 --> 39:19.100 I was actually expecting one, two, three, four columns which are separated by this fight. 39:19.870 --> 39:21.280 So what do I need? 39:21.460 --> 39:26.640 Give us a breather here, because these three fires usually have come as a separate. 39:26.860 --> 39:29.160 But this is an exception piece here. 39:29.230 --> 39:34.660 I have five thousand separate, so I will have to tell the finders. 39:34.660 --> 39:41.180 I believe that this is not a separate other SIPRI that is in the fire. 39:41.710 --> 39:50.080 So what I do is simply say Delimiter and I'll give the delimiter, which is the fire, and then I will 39:50.080 --> 39:50.780 run this again. 39:50.980 --> 39:54.490 So now it will understand that this is the. 39:55.470 --> 40:01.950 The Bible is there for them in two different columns and make this readable in nature. 40:02.760 --> 40:08.580 So this is actually how we will be creating our. 40:09.710 --> 40:14.050 Reading the CSB files and this is all you will read, any spoofy. 40:15.160 --> 40:17.080 Now, that is another thing, what you can do. 40:17.350 --> 40:19.450 You can also lead this fight. 40:19.600 --> 40:24.640 So let's say you have some data said you read the data, said you did your parents formations, and 40:24.640 --> 40:27.010 then you did a modern brain. 40:27.010 --> 40:33.080 The more the and you make some predictions, you made some predictions, and now you want to export 40:33.110 --> 40:35.570 those predictions into this week. 40:36.220 --> 40:37.520 So how would you do that? 40:37.990 --> 40:40.760 So for doing that, we have another function. 40:41.230 --> 40:42.530 So what does that function? 40:42.550 --> 40:43.780 The function is. 40:44.940 --> 40:45.480 And we'll see. 40:46.230 --> 40:54.570 So what we do, we will simply say the data of remains, will we say the door to see us? 40:55.470 --> 41:00.090 And we give the data from the name of the five to one. 41:00.450 --> 41:03.180 So let us say new. 41:04.250 --> 41:04.960 Fine. 41:05.900 --> 41:14.960 Thoughts and ideas run this night on this, I don't get anything, you know, I can simply go to the 41:14.970 --> 41:15.890 flowback. 41:15.890 --> 41:17.560 And this is my new FYI. 41:18.710 --> 41:20.570 And when I will open this. 41:27.000 --> 41:28.680 It will give the pilots it. 41:29.640 --> 41:35.670 So here you can see that this is the damage has been exposed, so you can easily see that the data has 41:35.670 --> 41:40.410 been exploded and the file the tab name has also been given us new. 41:41.520 --> 41:46.930 So this is a very simple example of how we can use kespin right ASV. 41:47.190 --> 41:50.040 Similarly, you can use any other function. 41:50.400 --> 41:55.490 For example, reading and writing, Excel file on file exemplify. 41:55.500 --> 41:57.690 You can write all of those very easily. 41:57.690 --> 41:59.480 Those filmi would be very simple. 41:59.490 --> 42:01.010 It's very similar to this one. 42:01.500 --> 42:02.610 So you can use that. 42:04.950 --> 42:12.670 So this is about reading and writing CSFI, in the next session, we will move towards learning about 42:12.720 --> 42:15.630 Binder's and how we can actually work with those.