Lecture 41: List Programatically in Python

Nafees AI Lab

append(): Syntax: list_name.append(element) ... copy(): Syntax: list_name.copy() ... clear(): Syntax: list_name.clear() ... count(): Syntax: list_name.count(element) ... extend(): Syntax: list_name.extend(iterable) ... index(): Syntax: list_name.index(element) ... insert(): ... pop():

Transcript

00:00Hello and welcome back guys.

00:05In this lecture, I am going to teach you how we can create lists automatically.

00:11Now you have seen that when the list is created,

00:14I wrote some names and said numbers is equal to

00:19and then 1, 2, 3, 4, 5, 6, 7.

00:23This is quite boring.

00:25The second issue is that the list is not 1-9.

00:31We all know that in real world, there are no green garden and rainbows.

00:35In real world, there are no edgy projects.

00:39The list is not so large.

00:42There is no method to generate lists automatically.

00:51Yes, there is a method.

00:54There is a function.

00:56There is a function.

00:58It is called range.

01:00Range basically, our list is automatically created.

01:04Now, if I say range,

01:08Range is the feature of start point and end point.

01:12For example, I want to create 1-10.

01:161, 10.

01:18If I print it, you will see nothing.

01:22You will see an iterator.

01:24You will see range 1-10.

01:26Range 1-10.

01:28Range 1-10.

01:30However, if I convert it in list,

01:34So, as you remember,

01:36We have started with int-math type conversion.

01:40Str type conversion.

01:42Integer, string, string, integer.

01:44This is a list.

01:46Basically, if you give an iterator,

01:48you will convert it.

01:50So, I put the list here.

01:52I put the range here.

01:54I will wrap this range.

01:56I will wrap this range.

01:58I will run this.

02:00Let's see what happens.

02:02Balance is not a problem.

02:04Balance is not a problem.

02:06Now, we run this.

02:08And Kaboom, Shaka, Laka,

02:101-10.

02:12Now, interesting enough,

02:14You can create 1-100.

02:16It's totally up to you.

02:17And actually, you can create 1-2000.

02:19It's not a problem.

02:21And this is one of the main reasons

02:24You will have to work with very big lists.

02:29You can create them just like that.

02:33Before closing this lecture,

02:35I will tell you a big trick.

02:38I will tell you that

02:40when we were the variable assignment

02:41we were able to assign two variables

02:43in one statement.

02:45We can assign two variables.

02:46We can assign two variables.

02:47I will say a comma b is equal to 1 comma 2.

02:49And in this case,

02:50if I print it.

02:52Print.

02:53Print.

02:54Print.

02:55Print.

02:56Print.

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03:00Print.

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03:07Print.

03:08Print.

03:09Print.

03:10Print.

03:11Print.

03:12Print.

03:13Print.

03:14Print.

03:15Print.

03:16Print.

03:17Print.

03:18Print.

03:19Print.

03:20Print.

03:21Print.

03:22Print.

03:23Print.

03:24Print.

03:25Print.

03:26Print.

03:27Print.

03:28Print.

03:29Print.

03:30Print.

03:31Print.

03:32Print.

03:33Print.

03:34There is such a way that I say,

03:36okay, first two values,

03:38and the other ones are separate.

03:40Then,

03:42we put a comma and a hysteric.

03:46Then, I say, remaining.

03:48Okay, remaining list.

03:52Make sense?

03:54I will execute this.

03:56I will give you two values.

03:58The other one will give you two values.

04:00The remaining list is the variable.

04:02Now, as you see, one, two, three, and remaining list.

04:12It's cool.

04:14It's very, very cool.

04:16It's very, very cool.

04:18Now, range.

04:20You can unpack list in the way you want.

04:24You can unpack list in the way you want.

04:28Now, for example,

04:30the star remaining will go to the end.

04:34The first one will go to the end.

04:36But if you have a value assign,

04:40the final value will go to the end.

04:42The second one will be assigned.

04:44For example, I will say,

04:46ABCD.

04:48Then, the seven will assign.

04:50And the six will be available.

04:52I'll print it.

04:54In print, we say,

04:56and we run it, and we run it, and kaboom, shaka, laaka.

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