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Customizing requests with your library.



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Hello, everyone.



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So far, we learned how to obtain headers of certain files, but why we actually need them and what



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is their use?



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Well, usually it is a very good practice to add headers to the request even before sending it.



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So if I create a new here to try to do this, we basically need to follow three steps in.



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The first step will be create request object and this is usually done by the request.



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Class and we actually already use that class, then we would like to add headers to the request object



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that we create from the request class.



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OK.



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And after we create the request, object puts a physical thing.



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So from the blueprint of objects of requests, sorry, you create object call to request.



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So after you created it, you would like to open it.



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So we would use.



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And often feature.



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In fighting to open the request object and actually this feature you're also familiar with, and this



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is the Eurorail open feature.



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OK, you can use this from the Python packages.



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So let me show you how this is done.



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If I go to the terminal and now we're in python mode, let's first import some Labruzzo right from Eurorail.



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Library dot request import.



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Request Colma Eurorail open so you can import both of them at the same time and then following step



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two here sort of step one after we imported it, we need to create an object from the request glass.



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That's very simple.



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Let's write the request equals.



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Request.



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So now we're creating an object from the request clause and the.



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All project is going to be referred to the HTP



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YouTube dot com.



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OK.



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That them and then if you'd like to other hadrosaur, for example, now the request is created, but



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it's a good idea as we head toward the header to the request and this is the second step.



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And how do we have here?



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Very simple.



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Let's try to request the dot out here and here.



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You can basically tab the header that you would like to add.



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For example, I can see a separate language actually do a dash here.



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A language.



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OK.



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Cómo.



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And now or let's do em for English, OK, let's hit enter here and for example.



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Let's now open our request and see the hear of the request.



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So obviously when you want to check out a request, you sometimes will see all the information because



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there is plenty there.



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But maybe you would just like to see some information that will do what the data there is all about.



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So you can simply do a response because you're so open.



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And then I will do request.



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I worked in the records and then we can actually read the lines from that, the request that we already



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made.



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So here we already open the request, which is a third step with the euro open.



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And now let's check actually the result of our work.



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So if I do response that read lines and then I would like to check, let's say the fifth line.



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So fifth, OK.



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And you can see how massive for example, the fifth line it is.



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I mean, I see it missed here, but if you have a software to open this line in a structured way, it



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won't look that messy.



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So if I would like to check to see the header items, I can do Rikyu dot ared sorry.



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Raicu dot header items.



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OK.



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And if I hit enter, you can see that the code here is the YouTube dot com.



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The user agent is Python three point nine.



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And then you also get the addition to the header, that violent language m.



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OK, so this is how you can actually act.



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Information to the header is quite important, especially if you want to add something for the readers



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or for the people that are checking your request.



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So as I said, you can simply use these three steps, creating the request from the request class and



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then adding the header, then sending the request by the euro command.



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And finally, you can simply check the header by this comma and you can see that the additional here



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that you added is already there.



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So let's see how this will work if we added in the file.



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So let's create a new python file called add header.



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OK, so let me get a bit closer and open this up a little bit so we can see actually better.



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OK, I think that's better.



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So let's create the file.



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Now let's do a hashtag user being EMV.



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So this is where Python is vital three.



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OK, and then we can do from bureau library not to request import requests and then we can do user agent.



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OK, this is a custom variable and we can set the user agent as.



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Mosiuoa.



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5.0, this is the version, then Windows.



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Ninety five point one same McAloon RV, and then we can do to any point zero that said, the lowest



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rate, the G, C, K, all twenty, ten to zero for one or one.



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And this is simply an example, user agent and then Firefox.



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Slashed 20.



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OK, and then the URL, so I'll write you your URL will be equal to H TTP.



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YouTube and dot com, our favorite browser, and after that, I will write a function.



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So let's try find out.



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Heather, and this will be our main function.



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Let me underscore here, that's it.



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OK, so let's create the variable.



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This will be called Heather's Equals Said.



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Language.



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In the same column.



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And one.



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Comma, and then I will do user.



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Agents in the same column, user agent that already created.



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OK, so actually, the user agent is going to be just one of the predefined variable that have already



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created up here.



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Let's go to the next one.



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So I to request.



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Equals to request and then Eurail.



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OK, so this is the area, that group predefined YouTube dot com.



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Actually here I missed the slushies, but that's fine now.



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So let's go after that.



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Heather's equals.



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Heather's OK, and then this right to print and in the print statement, I will write request headers.



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OK, and then for Key to follow in the request to adopt Heather.



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Items.



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OK.



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So for this, I will print.



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And here we're going to print percent is.



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That percent is then percent key value.



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Let me right, come on here.



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You follow, and that's it, actually labor removed and I wouldn't put it exactly here.



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That's it.



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So first of all, the key and then the volume, OK, and now let's run the function by simply typing



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if name.



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Equals Main.



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Look, month underscores the first name, of course, main, then I would add.



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Heather, OK, to run the function, this how best to run the functions in Python, so let's save this



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file now and let's try to run it from the terminal.



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So how is it the python mode?



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And let's try.



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It was here to see what we've got.



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So let's write Python Python up, Heather.



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And you can see that after a press of Heather, we automatically get the same language as anyone as



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we set it up.



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OK, the user agent, we get the user agent to set it up on the top.



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And so this was the information that we requested in here in the header section.



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So our test is completely successful in the final run properly.



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So this is how, guys, you can pretty much design and art headers to your euros.



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I hope this video was useful and I see you in the next one.