Now for example, you know, when we want to do an addition, we want the user to input an integer. So everything we're going to be doing is going to be dynamic, you're going to understand that in a second. Let me particularize that Before explaining. Now this new is starting as a module for this my file. And the only thing I want this to average is the room name. Now, if I just say, greetings, function with open or close parenthesis, now I'm calling this function. So you can also you know, use your Python code to convert it very easily. So we're just going to save and then if I come here So it says local variable city referred before assignment. So the first one is going to be the user name and the password for creating accounts. So we just specified a new JavaScript variable with the HTML tag. in Visual Studio code, we just returned a simple HTTP response with an h1 HTML tag saying they welcome one. So plan this, and then the name should be the name of the database. So if I say admin, and I come here and just input the password, and I enter, she's gonna take me to an admin dashboard, as you can see right here, right here, I can maintain and control my size, any hour, like, without even having an external database UI. And then this is the command line that we're gonna use to create a new Django project. But now we cancelled everything out left only one. For now, we're just gonna be talking about the classes and inheritance in the view, then later on, we're going to move to our gonna integrate it into our database. And then they just do the same is truly reliable. So this will give us, you see, says my function is not defined as because we've changed the name to add numbers, we're just going to run it again. Now this part is going to allow us to us multiple URLs in our list. Learn Backend Development with Python We're building a tutorial that will teach you how to build an online marketplace. Now let's say we want to join these two lists together like we want to print it together. So that is duffel, dat, and we'll give it a comma. But why we don't want all this to be in the URL, what do we just want it to be slash counter. Generate a backend and frontend stack using Python Backend With Python, How? | PksTech Now let me just so now I just want to say four items, or four values will be better for values in this my least. And then we have multiple Like, if you want another URL, you can just add a new URL new arrow like that. So that's how you can do simple stuffs like that. But we're not done, we need to come to blog and go to settings.py. And then we also have for a user named john. So without wasting any time, let's get straight into it. So this i is index number is one, if we want to get it, we're just going to say, Len by going to remove Len. Now you can see it says down collecting Django, deep serializer, then downloading Django deep serializer 0.1. But before we do that, I want us to, first of all register this up in our installed apps. And then we'll also pass in more than one parameter or argument. And then from that became using you to filter our database. And then if the number is divisible by two, then we know that the number is an even number. Because to our inputs, I will say and user name. But they are countless functions for countless number functions. So right here, you can see that it brings out the virtual environment back that showing that we are in this virtual environment. Well before we can check it out, we need to come to our index. If indeed, please don't forget to smash the like button and subscribe. So you can see that it's also very useful. Now, as you know, in the last video, when we define our function, then we just simply printed out whatever we want to return. So why isn't a Post's method from the front end associated with quest those posts and then it's same message. I'll let you just take a simple requests. Now let's say we only want to print these we don't want to print the whole list. And after that want to return the user to the register. This course on Python Backend Development with Django - Live, offered by GeeksforGeeks is designed for beginners who're Python enthusiasts. If you're on Ubuntu or Linux, or Mac, download the one for your OS. And then there is countries dot txt, c o u n t ri is CE o u n t ri ES. Let's go back to our command prompt, and they just open a new command prompt. And then in between those, we can do anything you want with a file. So if the string who says the string is not to say, is not a strange. So let's just come back to the rest framework page. So what I want to do now is basically just st this detail, this input right here is this input, which we see input type text name, city. Docker Compose integration and optimization for local development. So I think is because there is no supposed to be case. The body of the post was also models towards character field. So Django cannot assess all this files inside this template folder. Now that we have these everything imported, we can now create a class to inherit from this API view, so that we can get a lot of methods that we can work with. Now let me see a developer's an IDE sent the message and successfully the message displays is cleared. Again, there'll be a list, and I'm going to save path. So now once we eat some meat, it takes all this data to this counter view. They're also going to have another way, let me work through. But this is just to verify if Python was truly installed. Now, if we go online, and then we just search for something like Python modules, then we can just see, let's see. So these blog posts since is the first post is gonna have an ID of one. So I'm very sure the reason is because there was a syntax error right here. Now as the user is really on our platform is registered. And then right here, when I press dir, what I did was to see all the files on folders in this particular directory. And let's say it is not easy to use, let's say we're just lying about that. Now we have four year versus we appended one, it should give us five. Now when I tried to print these, you see his prints only the first one, it doesn't say I mean prints only the second one does the most recent one, it's automatically because this one out of it now does what I mean by duplicate not allowed in dictionaries, you can't have two t with the same name, we can have two values with the same name. How can we do that? Well, how can I get all this data that I have right here in my views, or in my project. So this else is, if everything is successful, if there is no error, then he's gonna say something, nothing went wrong. So now we can see the under DRF app, we have students, if I click on me, we should have one objects in there. Now you know we can add a single quotes in between our text does because Python is going to see this like we want to close on this prints text. Well, we can also use a nationality and say you just give it a nationality. Now when I run these you see now and that is brings me only United Kingdom. If you do not forget to smash the like button and subscribe. You can call it argument, whatever you want is fine. So right here, we can see that DRF has been created successfully. Now dealing with database in Django is quite different. Now I'm going to be able to assess this variable, because of this key in my index of HTML. First of all, import or say, from dot models, import posts. So that is what is for is used to send a response back if there's an error or anything. So but for now, when it's empty, it means the comeback, just the main sites, a main project, where we say slash download is miss our site slash download. So now the second is a size we're going to do is to check if a number is divisible by five. Now, we can also make this more add some more features like right here, in the URLs. Where is the room? So topos used to store multiple items in a single variable. So this URI lives equals to sudents serializer unreligious give it a data. So let's just add a P and see if that is what we're looking for. So let's say we want to have country now. So now when we have name, we can change it to equals to. Okay, so let's quickly fix this before we continue. So does the basic concept of an if statement. Again, no, no, no, this should be easier. If you're a Python developer and want to dive deep into Python and . We can also add two different types, like if let's quickly change this back to integers. So this is what we're going to be using to assess it. So we're going to do the same thing for the email. These essential back end developer skills include but are not limited to: Python, Java, SQL, NoSQL, and Git. So named oppa is the function that changes it to uppercase. And it prevents some attacks on our website. So this message was, Remember when I said I'm going to tell you what this message is for. And then we'll say the name of the virtual environment in Mr. And then we want to get it so and then what wants to get is this words, now we come to the index at HTML, you're gonna see that we're sending this particular data into this counter. So this should be beneath the Get Started of this, let's crew all the way up. And then the second one is the username, obviously. Now instead of printing strings, let me just delete this New Zealand. So 01 want it to be want to input cherry. And then these Ws gi, yeah is kind of similar to the SGI. So if we have like, this class that is empty, we can just put pass for now they come back, like add attribute. So this path is gonna be the path for the room, it's gonna be the URLs for the room. So now first, to be able to collect this in our views, we need to come here now. So whenever this is created, this is going to be saved with it, we're going to get the current date and save it with the source in defaults. So now you can see, I have this message without reloading. So now let's save this on it refresh right here. Django is actually a web framework, which allows you to build websites using Python. And then it's just going to greet the user with the print function. We didn't create these from this admin panel, or from our projects or from our website. A complete guide to web development in Python - Educative And it wants to save that data, it should give us a response of serialized data. The Complete Roadmap for Becoming a Backend Developer: Step-By-Step But now, they just give it a name of my app. So it gives us this arrow and as I said, just erased because we didn't add our CSRF token. So let me just cancel this, we need to make sure the same directory. So when we're trying to render this HTML page index, HTML, is going to request for this index dot HTML in the root directory. So the room with the ID of one is obviously this restroom. So when we do something like 2025 in Python, it means give us the remainder. But what if the password is false, like if they are not equal, they will need to have an else statement that says those password is false, they send a message I say messages dot info, requests, and then received buzz words, not the same. Now this command line creates super user. So now modules are in just on your local laptop or your local PC like this, modules are hosted online. So I hope this you understood what we did in this check view is pretty basic, pretty simple stuff. And you lie you like watching this video. So once we're only read this file, we don't want to edit anything on it. And then so right here is the our Django projects, we'll paste it in there. So let's say we want to do something like three numbers. And then it's not going to take in any argument for now. Then is equals to close by just going to print out number one plus number two So now let's just test that. Once I run it, you see it says list two is not defined. Now this model dot char field simply means character field, it means like a string of food accolades characters, now we're gonna open a bracket, and it takes one attribute, the attribute is Max length. So now only get in if this feature is true, does when it says true? Now if I see I want to get the length of list two. Follow along to learn how to build not only an app, but a whole platform that other developers can build on including a web API, client libraries, and documentation. So that's the basic difference between topple at least. And you see, it's automatically shows here without any delay. So this is just the data, the user name is admin, and he has been active for 10 years, let's just make demo specific number of years active. So the list in Python is basically just a list of different attributes of different values fixed into a value. So what is the entire room, it should take a user to another unique URL for that particular Django for that particular chatroom. So all the configurations, and the apps when installing anything in all our data bases is inside this file, we're gonna configure it. That's what comes with the Django rest framework, it actually gives you this nice looking template to showcase your API and basically test all your API's. This is just for the migrations for the models, I don't understand that later. And theme is the value assigned to this name. So this basic function now is just simply going to return nine, because that's 5.4. And then we're going to say if number percentage two is equals to zero, then obviously, this is an even number. So now let's just do change everything we need for this file. So now we're going to be looking at dynamic URLs in Django, to what I mean by dynamic URLs is to for example, we have the same URL but with different ID passed in it. So let's just say query equals two then CT. And we come back here and search for London. So we might have some API that we can just allow anybody to use without authenticating or without authorizing that user. So say, if a is greater than b, then we can just print to the user a let's go catenate is greater than B. So that is how to insert a value in between a list. I was I saved these, like, come on each refresh, you're gonna see now that I have a new database table new features. Now if you don't see this, this particular script And then that is just a dictionary. They're gonna see that the first one is eat one, eat. So that is added to the installed apps schoolzilla up and then we come down yet writing this, I can just say pays the day when I see these slush templates. So when we created a new user, and we tested our code, we saw that the user was successfully created right here in our database, which is Tim, but it gives us an error, which says return redirect login. Now CSRF stands for cross site request forgery. So now we say except value is not an integer. That's why I like Visual Studio code, because it's really quick and lightweight, compared to some other extent from other ID. You will learn the basics of Python and Django, and create a few projects along the way. So it's like well, we have multiple lists inside a list variable. To now guys a service is reliable, is easy to use, and our services vary. And then on the other class, we're gonna have a function. But now if we try to run these inputs, my name, I input a random age, you can now see it gives us this error can only concatenate strings, not integer. Now, we're in a virtual environment for a while let's move straight to Django. What if I wanted to print only five regardless of the sign, if it's positive or negative, I'm going to add a b s. Now this is a function is a number function, as I explained earlier, function is just a block of a block of code, which does a particular task. But you see, it asks us for a login username and password, but we don't have debt. So now instead of saying the same three times, we can just replace this team with name. But now let me just remove this mango, we don't want to have it twice. So as VS code is doing its magic, let's go back to the command prompt. So this is what we're going to change this to be real time message, and oh, or deciduous, or demo. So we're gonna start from the scratch, we're gonna, first of all, install Django, and then we're gonna start a new Django project, then we're gonna install the rest framework, and then I'll show you how to integrate the rest framework into that Django project. So that's the basic arithmetic for multiplication. So I can look through the list it is ethereal. So this is how easy it is to install the Django rest framework, just a simple PIP command. But it is not divisible by two, then this number is odd. And we can also use comma, we're concatenating with a string also. So guys, what we're gonna do next now is to make sure that it doesn't show all the characters of the posts or the old body of the post. Now let's say want to open a new file and name it new dot p y. So now that we have that, we can test our API. So we don't need all of these again, get rid of that. And so, when we use the addition is seen it as concatenation. What we just want to do now is to say serialize, a dot save just exactly the way we do in a Django form, I'm always referencing to that Django form, because it is very similar to this. Now you can see my lists, I would get up this list to be anything ledger, C, gi j Yu Gi Oh, now we can look through these and say for, let's say like for x. And now let me enter as broad, something like this. So right here in this terminal, we're going to Yes, this is a we're going to assess our project is ready in this project directory. But remember, in our database, we said, It is not easy to use for easy to use, it is false, but easy to use, yet he says This feature is true. 1. Once I run these, you see it says can only concatenate strings, not integer. So let's quit it out, I want to do one thing. Now this is the data I get after sending a request to this URL. And then you just put index dot HTML, which is the name of the file, or tried to render, which is right here. So right here, a module created a new model name message. So that's how to build that basic Python program using getting user input. So it's rendering the room dot html file. I run this, it gives me that so there is not going to be error, nothing is going to conflict, we can just easily do that. So that's just saying that after everything if there's a problem or not just print that try except finished. So obviously a is the same thing as team. So if I come here, you see we have the same blog path. And then number of years, I select number of years, lots of the user has been active. Normally, we should have something like this right here, what is not yours? Tomi has created many popular courses both on his own channel and the freeCodeCamp channel. Let's say we have something like slash download. . So there are various things you can try out with Python is very great. Now what is the name plus is a boy is going to print us theme is a boy. So now, we can easily come to a command prompt, and just the Python managers Pew II run server. But when in time I'm doing my tutorials are like explaining everything I'm doing even if you're not, you don't know anything about Django so you know what's going on. Scala 10. So that before we can read out, we have to import it from Django URLs from Django dot HTTP, import HTTP response. So I'm going to set up two models, one is going to be for the chatroom, and the second one is going to be for the messages. model, the Django model right here installed. Python on the Backend | Udemy But because it is getting different user name, it is going to be different outputs. Now I'm gonna have a new file, I'm gonna have a new variable, I'm gonna name it fixture fixtures, and I'm gonna say fixture objects. So that's the same thing right here in Python function, decode block, goes for the errand, and in the return statement, give us a response. So whatever you put here, must correlate with whatever is the name of the folder. And then I'm going to come into the folder. So we're going to be putting in everything we've learned in this tutorial, and then building this simple program. So I'm also going to talk about that in a few minutes. But as you can see, we were importing it for me. Okay, this is a free, let's just scroll all the way up unless a free HTML template download or something, and they just get one to download on the legends as you know, Django project. So right now, we can just say if user dot object dot filter, email, because email does exist. Now, when I say use authentication, what I mean is signing in as signing up to a platform, like when you go to facebook.com, and then you sign in to the platform you're dedicating to your account into that platform. Now, this is gonna create a virtual environment named my app. Now you got some more advanced features, like very advanced features like images, you can add comments, like he's actually able to comment, you can add to different types of text, so the user can design his text like fonts and stuff like that, you can add various other things. If I want to specify, let's say, slash signup, it should be something like, let's say register, this is how I'm gonna do it. But if these don't happen, we'll just return a response of an error. So catch if you do so the max length, we can set it to 500 because the detail and then for did is true. But when I calculate the length, it gives me the actual amount we are via which is five variables are calculated from the index number into before, I hope you understand that, we can also do some other things like in the list. But we are we need to do a little bit of extra work is to make sure that this data showcase in real time. I, when I run this, it gives me Ghana, Nigeria, and Australia. So in this views.py file does where I'm going to code just like a normal Django project. And once we hit refresh, we should have that styling arrow. Now when I say this red line is going to print the first line of this file, which is Ghana. So let's go back to what we're doing right here. query set can be students, those objects does all know what we can just do because this serializer can be equals to students serializer on the water specified our query sets, and we need to specify one more thing insane. You see now, the first thing he says is input your name. So when we use the API view we can do we can use something like a get request or port request. Good, should we get calls to message so this message, Moodle does object dot future. But our serializer is this student serializer. It we don't need much manipulation in this is just one line of code or something just to assess some socket and stuff. Malware analysis, network monitoring, web scrapping, and port scanning are only a few examples of what security-related tasks can be accomplished by means of Python. So we can use this to assess the messages for each room later. Now this you run our project on the localhost 8000. And then requests for now want to request for home dot html. So you can check the description to get the source code for the front end and the back end and everything you need. So now once I use plus slash is going to be printed with it. So I'm going to come into models.py file. And this is going to be just like maybe the first line of the main blog posts. So this particular line, let me just scroll across so you guys can see the lines. I think now that we have a new message, so it says a guy's value. It is static is just a static text right? Now there's going to be all four lists for now. In this tutorial, I'm going to be talking to you about the Python interpreter or the Python shell. So this dry is saying, try all this code, then if there is any exception at all, just print value, no an integer, or we can just print something with drunk because we don't know what's my cost. messages key dot user. Because we'll define a function, let's say we have a function to say, I and then let it pass a name. Unknown, let me say something like nationality. And I'm sure this because we've not saved our file, so let's come here is safe. Now when I run these knots in opposing determinar, or when I come here is a pen, this is a new line to eat. So as you can see, we have want to dance, which is admin. Python is fourth on the list of most-used backend programming languages - just about 48% of respondents use it -but it's worth noting that this is only the case for professional developers. Right now we're saying if the value percentage five, that means if the remainder is equals to zero, then obviously, that just means that value can be divided by five else value can not be divided by five. So instead of Lorem, or whatever this is now, we can just have feature fixture. Now, as I said, we're gonna create a new module that we're going to use. And maybe asking for the user's age and then telling the user Your name is this and your age is this. What I can just do now is to have a link tag. Instead of just passing out these values, statically, or by just add code into values, we can first ask the user to give us an input of his name and his age, then we're just going to print that. First of all, we already have model registered, we already have created a super user. You I was expecting you to give me three. So instead of using the square brackets, we can also use something we call lists. So it's going to store the title of the blog post, when the blog post was created. So as you can see, it says how to deploy a Django project to Roku. And I guess we're pretty much done with this video is something's right here. Now when I say the user news, ah, ah, ah, ah, ah y. So after that, we can just say, after everything is also loaded these so if it's not a request, the method is not post and you just get, it can just do these. And the second and the third, and fourth is going to be user name and password for login. Now, creating an app is one of the times we use that money.py file, we'll just say python manage.py. So when I say the restroom of the permissions inputs, we are going to get a bunch of permissions on bunch of wanted dication lists. And then let's move straight into Django rest framework serializers. Now this is going to be a post not to get and then you just gonna take exactly the same thing that should be self. So we just say, return redirect, and we're redirecting the user to slash room slash room dot name. Well, now you know that let's say you are using an external framework, like you want to use react or something in this your project, you don't want it to you can't do this manually, like I just saw, we had to come here to type by tomando spy DRF grade token admin, before we were able to generate a token for this user. So by just going to do is to say return response of data. Backend Developer Roadmap (2023) - Scaler Topics So each number as is binary strings zeros it gets the binary string of a number Just run it, and it prints this. And the data output we do not have anything right here. So we're checking if there is a POST method being like if this if this page is being rendered with a POST method, they want to get all these dummies something is being sent to this view. Now we're going to use our Ajax to send that details to our database. So we can also go for that to check in with an integer by using some complex if statement, or some reg x we usually don't need to bother about for now. So right here, this is where we need to do some work. And then the date is automatically going to get the latest date the correct time. I can do this by just coming after the index of HTML, you just add the curly braces, and then the name of the variable name. So now that we have all these details that we need, what we can just do is to save all these details into our database. Django knows where to look for the templates. If the type of value is equals to a string, str, then we'll print. So we're dealing with real data, real models, you're gonna see what I'm talking about. So knowledge is our class meta, under specify, specify the model loaded with the student, and then the fields. Now there's something in Python called inputs. In this tutorial, we're not going to be building any full project bow we're going to be doing is taking each Django concept step by step using it in a practical use case. It's like a dictionary, this is the key, he says the value. So as you can see, it gives me from zero to nine. And then we can also specify for each to loop through a particular range of number. And these views are pure is where all the main thing, Apple. So we know that the index number of this is one of zero, which is the first one, then we also want to get the face value, which would be zero. So first of all, I want to flush all the data we have in this our database. So now let's save this icon here and hit refresh. In this part of the tutorial, we're going to be talking about if statements in Python. For this video, I'm going to be showing you how to connect Postgres database into your Django project. What page do we want to open is you are going to specify it, but whatever user goes into COVID tomi.ml slash newsletter, or slash blog post or something. So then, what we now want to do is to have another variable, let's say what one should be an input. But I want to go to this function, I'm done with what I'm doing in this function. Now it says the input username, I'm just going to input admin, and it says we should input password.
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