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Andrei: Alright. We're almost,

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kind of flying through this.

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I know we're going slow here,

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but trust me, once you get these data types,

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things become a lot easier.

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So we're just climbing that mountain

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so that we can start looking at a higher level

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at the language of Python.

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To keep going,

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let's talk about this data type.

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Str, which stands for strings.

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Let's see what they are.

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A string is simply, well, a piece of text.

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For example, a string can be written

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with quotation marks,

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and I can say, "Hi, hello there".

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And that is a string.

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You see that the color changed here in my editor.

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I can also make strings with double quotes.

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So once again, this is also a valid string.

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And I can put anything I want in here,

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I can do numbers, if I wanted to,

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exclamation marks, it's just a piece of text.

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You can think of it as a sentence for now.

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And if I do the type function here,

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remember these brackets denote

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that we wanna perform some sort of action,

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which is we're using the type action that Python gives us.

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And if I click Run, you see that,

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oh, and remember, we have to print it out as well,

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so let's do print, so that we can see the display.

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And I click Run.

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You see that it's str, it's a type of string.

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Now we can use this in important ways.

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For example, imagine you're creating a login form,

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and we wanna collect somebody's username and password.

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Well, we can have username variable

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that we assign let's say some sort of username,

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let's call it supercoder.

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And then password can be supersecret.

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And now we have these variables, usernames and passwords,

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that we can use throughout our program,

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such as to check if a password exists.

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And remember, I can use single quotes or double quotes.

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But there's a third way that we can write strings in Python.

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And this, well, is used for long strings.

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So let's just create a variable long_string,

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and what we can do here is three single quotes

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in a row like this.

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And then here, I can just say,

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wow,

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maybe, a pair of eyes of somebody

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that's really impressed,

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and let's go with a mouth.

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That actually kind of looks like hair.

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Alright.

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And then I finish it off with three single quotes again.

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So now if I print the long string,

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and I click Run, look at that.

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My little weird emoji face is printed.

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So the three single quotes is for long strings

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that I can keep going on multiple lines.

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For example, I can't do this with the single quote.

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You see that the orange color is now gone,

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because Python is going to say,

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this is a new line and this is another line,

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and it's going to give me an error

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because, well, ecret with a quote doesn't mean anything.

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But if we use three single quotes,

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you can see that we can do multi-line strings.

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And this is really useful if you wanna have

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maybe long sentences and paragraphs.

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Now with a string,

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we can do some cool things that we saw

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in the numbers videos.

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What if I had something like this.

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Let's say I wanted to grab the first name of a user.

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Just give my own name here.

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And then last name.

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And again, my super hard to pronounce last name.

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Could we do something like this,

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where we have full_name equals

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to first_name,

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plus last_name.

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And then if we print here the full_name like this.

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Should this work?

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Well, let's have a look.

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Let me remove this part here,

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just so we have nice and clean looking code.

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And if I click Run, there you go.

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My name is printed,

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but you see that there's no spaces here,

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because we're going to use the addition sign

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to attach Andrei to Neagoie,

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but you can see that there's no spaces here.

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So I can add a space if I wanted to,

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or I can just simply create another string

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inside of here,

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just like this,

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and then add a space in between.

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So we're just using the plus sign,

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which we've seen in the numbers videos,

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but instead to add strings together.

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And now if I click Run,

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you see that I got the space,

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because I'm adding a space in here,

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in between the names.

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Very, very cool.

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But there's a few more neat things

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that we can do with strings.

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So let's take a break,

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and I'll see you in the next video.