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Hey there, welcome to this new section of the course, and this is one of the last sections that we

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are having, and in this section

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we're going to dive into the world of Web applications with Python.

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And yeah, the website that you're looking at is a web application built with Python,

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so this is what you're going to build in this section.

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And all of this was built with Python and Flask.

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And also we're using a PostgreSQL database in here to store data and then we use Heroku to deploy the

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application online.

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And yes, as you see, this is online now

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and it can be accessed through this URL.

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Now, what this does, well.

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It's simple, but you can modify it and do whatever you want with that.

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In my case, what I did is, you know, I'm asking the users, the visitors to enter their email address

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and their height.

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What the application will do is

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once it gets to this pair of data from the user,

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it sends the data to the database, to the server are then it calculates the average height of all the

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users that have been submitting data

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so far.

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And then it sends the average to the user that just submitted their email address.

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So it sends the average height there by email to the user.

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So all this is automatic.

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Yeah, let me test this, so you may want to pass your email address there and your height.

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You know, this also has some restrictions.

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You can not pass a hight of more than, let's say, three meters and you press submit, and once

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that is successful

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the user will be sent to a success page.

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So they get the confirmation that their submission was successful and that the user will get an e-mail

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to their email address, email accounts.

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So I send my height using my hotmail address.

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And here is the email that I got.

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And I'm using my Gmail address to send emails to the users, and I used my Hotmail dress as a visitor.

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Yeah, you get this email automatically so height that I answered there was 1.76

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and this is the average height.

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And yeah that's, uh, some sort of confirmation email.

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And it also gives you the number of people that have been registered this far.

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So, yeah, that's the application that you're going to build.

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I encourage you to really learn how to do this.

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This is quite interesting.

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And you'll learn a lot from this.

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You'll learn how to store data in a database from your Web application and send data via email to

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users.

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And so on.

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So let's keep going.

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And I'll talk to you in the next lecture.