Lecture 17: Python Interpreter and First Code in Python

Nafees AI Lab

Python is a versatile, high-level, general-purpose programming language known for its readability and ease of use. It's used in a wide range of applications, including web development, data science, machine learning, and software development. Python is interpreted, object-oriented, and has dynamic semantics, making it suitable for rapid application development and scripting.

Transcript

00:00hello guys good more name

00:06so our last lecture was in python interpreter

00:12if you expect us straight away download and install

00:18then we skip this step

00:20the reason is that

00:22we have a lot of students who have a request

00:26and have a request

00:28so we will skip this step

00:30and we will directly

00:32pre-installed set up

00:34so we will directly start

00:36and we will be comfortable

00:38then we will be able to install

00:40this setup

00:42which we will finally learn

00:44so now

00:46online services

00:48we have chosen

00:50dot io

00:52dot io

00:54if you have opened

00:56then you will see

00:58options

01:00and if you will see this option

01:02here is python

01:04this is different programming options

01:06when you click on this

01:10programming interface

01:12which you will see

01:14code

01:16so you will skip that

01:18and you will see

01:20error

01:22so we will click on this

01:24and we will open our python

01:26set up

01:28click

01:30two boxes

01:32one box

01:34print hello world

01:36and the other

01:37stdn

01:38ok

01:39now

01:40you will see

01:41basically

01:42three things

01:44you will see

01:46you will see

01:48main dot py

01:50jis file

01:52extension

01:54dot py

01:55python file

01:56jis

01:58python file

02:00dot py file

02:02dot py file

02:04dot py file

02:05dot py

02:06dot py

02:08dot py

02:09dot py

02:10dot py file

02:12dot py

02:14on app

02:16dot py

02:18dotージ

02:20dot ty

02:21dot

02:22dot it

02:24dot

02:29dot

02:30dot

02:32dot

02:34dot

02:36dot

02:38dot

02:40interpreter is code to give interpreter and interpreter is read and convert to machine language.

02:47Then the result will be in the box where STDN is listed.

02:54This box will be displayed in the box.

02:59By the way, STDN means Standard Input.

03:03This is our course of curriculum.

03:10Standard In, Standard Out.

03:12Anyway, we will say that this is the output box.

03:16Okay.

03:18Now, we have to go back to the first code.

03:24By the way, if you change the layout,

03:28let's say GitHub,

03:31let's say,

03:34set up change.

03:36First code.

03:37I will say hello world.

03:39Hello.

03:41Mohsen.

03:42This result is returned.

03:47Here is standard out.

03:49This output will show you.

03:52Good.

03:53So, you can see that we have this procedure follow.

03:56I have human readable code in this file.

03:58I have this file.

03:59I have this file.

04:00I have this interpreter.

04:01I have this interpreter.

04:02I have this interpreter.

04:03I have this machine.

04:04Now, the machine has the output result returned.

04:08Here is the result.

04:10Hello Mohsen.

04:11Hello Mohsen.

04:13This is written.

04:14Okay.

04:15Okay.

04:16This is the flow of information.

04:18So, let's see.

04:19Let's see.

04:20Let's see.

04:22Now, you can see here.

04:25You can see two colors.

04:27One is red color.

04:29The other is black color.

04:31This is syntactical difference.

04:34Syntactical difference.

04:36This is a built-in function.

04:39This is a type of element.

04:43This is a type of element.

04:45This is a type of code.

04:47This is a interpreter.

04:49It is a type of element.

04:52Print,

04:53This is a simple skeleton type.

04:55Visit c.ts

05:09Um...

05:10print,

05:11Print, okay, and this time we can add single braces, double and single.

05:21This is so cool that I wrote my code, okay, very good.

05:29Now we execute this, run, this is cool, I wrote my first code, very good.

05:34This is a greeting message, not very exciting, but very very small.

05:43This is our first code, this is our first code.

05:47We can use print, and print, and here we basically put plus,

06:02I put two strings to join, and here we put motion, execute, hello motion, wow, this is cool.

06:11So, I have two strings to join.

06:13Basically, we can save this string in memory box.

06:18We can save this memory box, like shoebox, like tiffen lunchbox,

06:22lunchbox inside lunchbox,

06:24we can save this string in memory box.

06:31Name is equal to,

06:35you can save this name, please, this memory box.

06:41And besides this name,

06:44you can save this memory box.

06:47Now you can save this memory box.

06:50Interpreter,

06:52you can save this character.

06:54Run, the result is the same.

06:56Very good, very good, excellent, excellent.

06:59However,

07:00if you have a code,

07:02flexible,

07:03now I will change the name,

07:05John,

07:06run,

07:07hello John,

07:08Sally,

07:10run,

07:11hello Sally,

07:13very good.

07:14Very good.

07:15This is our very interesting code.

07:16Now, again,

07:18we have to go back.

07:19This is the file,

07:21which is on our code.

07:23This is our interpreter area,

07:26which is human readable code.

07:28It is easy to read.

07:29Name is equal to,

07:30hello Sally,

07:31and this is the file.

07:32This is the green signal.

07:34We say,

07:35interpreter,

07:36you can change the machine

07:37and execute it.

07:38So,

07:39he will change the machine

07:40and execute it.

07:41Excellent.

07:42So,

07:44we will do this lecture.

07:45Close.

07:46See you in the end.

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