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Computer science and engineering 

Hi na new user

so this is the first lecture of our 

python code so you can say python course 

we will see in this video introduction 

to python right 

like you can say some features of this 

language application areas who are using 

this python why this is so popular 

nowadays some features this kind of 

thing we'll be discussing in this video 

about python or python 

i'll pronounce it as python right okay 

now see python is nowadays the most 

popular programming language but you can 

say it is the fastest growing 

programming language nowadays it's not 

like that it is new language because you 

you know you think that 

recently it is it has become so popular 

so it is a 

new language no 

the concept of python came into picture 

in 1989 

and even java 

was you know the concept of java or came 

into picture in 1995 so it is before 

java 

right but 

recently in past few years like 

python has become so much popular and 

why so that also will discuss 

right now basically in every area python 

is being used right now the main areas 

are machine learning data science 

artificial intelligence see nowadays the 

data is a big problem many companies 

like you can say your facebook 

youtube any shopping websites 

they are having 

data of billions of users right and how 

they manage that data 

and one more thing is what see i think 

you have noticed 

if you suppose uh 

nowadays i 

you know a search for especially chicken 

carry kurtas 

right 

so 

i have i've been looking for these 

kurtas on two or three website shopping 

websites and whenever i open any other 

website you know for study 

that kind of thing 

so 

those relevant ads they show me 

now ads of those chicken curry kurtas 

and all so have they come to know the 

advertisers like how they come to know 

that i'm interested in buying those 

chicken curry kurtas 

so this is what they have analyzed my 

data 

how 

many websites i have visited in which 

how you know i'm interested so they have 

analyzed that data they have collected 

my data they have analyzed that data and 

according to that they have mind you can 

say some 

pattern they have formed 

and they come to they come to know that 

i am interested in chicken keri kurta so 

they show me the relevant ad 

i think you must have noticed this thing 

also 

right 

so this task is what this analysis of 

data and all 

in this also python is being used 

right 

so 

in many areas this is one application of 

this language and see in many areas like 

whether it's software development it's 

web development software testing machine 

learning artificial intelligence data 

science game development making of any 

apps mobile apps desktop app websites or 

web apps anything hacking even hacking 

in many areas 

right now python is being used and it's 

not like that small companies are using 

this language no the big giants 

companies are using this language maybe 

the main language or supportive type of 

language as a support language 

you can select like google uh youtube 

cura instagram these companies are using 

these big giants are using this language 

right 

and the person who are using it 

researchers scientists 

software developers software engineers 

software testers game developers 

mainly 

data analyst 

and even school going kids 

they are also 

learning or you can see using this 

language 

see 

because 

you know researchers and scientists they 

want us 

like they don't want to you know uh 

utilize or you can say wasted their time 

by learning a complicated language and 

python is easy language so they talk 

they 

went for this language python language 

so that is why recently this this field 

is a you know on boom machine learning 

artificial intelligence data science 

this kind of thing so that is why with 

that field python came into picture 

because they these kind of people 

researchers scientists so they are 

working in this field they want a simple 

language to work on right they don't 

want to waste their time on learning a 

complicated type of language python is 

very simple very easy to understand 

language so they took it for this 

language and that is why this uh 

language has become so much popular 

within the you know recent years so 

white has become so popular because 

first thing is it is easy to learn easy 

to understand and it has wide range of 

applications i have told you in how many 

areas almost in every area 

it's been used 

second thing 

you can write down you can solve any 

problem with 

fewer lines of code suppose you want to 

print hello world in c language 

so that those header files main function 

and printf hello one in c plus plus also 

header files std name space std main 

function and all in java 

those you can say the main function 

system uh sorry public static void mean 

then system dot outdoor printer and then 

hello world this kind of thing in 

python simply what you need to write 

print 

hello world 

that's it 

nothing else a simple line 

nothing else 

so 

in fewer lines of code you can solve 

complex problems 

right and more easily you can understand 

this course so it will 

you know save your time also 

another benefit and it is high level 

language you don't need to be aware 

about those memory management type of 

thing like in c you have to aware you 

have to you know keep track of you have 

to manage the memory manually but here 

automatic memory management is there it 

is high level language so you can do 

more 

with 

less 

right with the writing you can say less 

code you can do more in this it is 

object-oriented programming language but 

it's not like that it doesn't support 

that paradigm procedural and functional 

it supports multiple paradigms 

object-oriented procedural as well as 

functional 

right it is multi-paradigm language it 

is general purpose language almost in 

every field 

for making everything you can use this 

language 

it's multi-purpose language 

it is 

interpreted language these are some 

features of python you can just note 

down these features so it is also python 

is interpreted language without compiled 

language 

right 

and one more feature of this it is open 

source right so that is why it is having 

a huge community and rich library many 

ill 

you know inbuilt packages modules 

functions those 

you can use in your program without 

writing those functions from scratch 

because it is open source anyone can 

contribute 

in this right they can write down their 

packages or functions or modules and 

they can contribute it is open source 

anyone can use 

those inbuilt functions libraries and 

all 

right like in cnc plus 

also we have some libraries in there 

predefined functions are there these are 

already defined function like uh if 

for string concatenation we use directly 

a function str tap so the definition of 

that function is already in those 

libraries you don't have to write down 

the definition of that function you 

don't have to tell the compiler you just 

use that header file string dot h and 

you can call that function because it is 

already been defined in the library by 

some 

other people so by someone else 

so same 

it is also having rich library because 

it is open source so 

and huge community it is having if you 

are finding any difficulty in this 

so there are many forums discussion 

forums you can post your queries and 

definitely you will get answer for 

example some libraries are you can say 

numpy pandas tensorflow for machine 

learning and data science while in this 

field they use that library see 

basically libraries are what 

some codes are written codes so for some 

basic functions are written on those 

libraries so that programmers don't have 

to write down those function from 

scratch and they can reuse those 

functions in their own program right so 

that 

obviously it will save time of any 

programmer right because they are using 

they are reusing that function 

like for making chapatis you need atta 

right so just go to any shop maybe you 

can buy whole wheat or 

atta right but the process behind that 

thing generally farmers do that process 

that long process 

right they have done for you 

so they have built those things for you 

you just have to go and buy you can 

reuse that you don't have to do the 

whole process from scratch because it 

will take definitely long time 

and you don't know definitely most of 

you don't know how to 

do that farming process 

so same thing those inbuilt libraries 

packages modules functions are there 

programmers can reuse those functions 

and so it saves the time of programmers 

and many frameworks are also there like 

django flash 

if you are interested in web development 

right 

and i told you like automatic memory 

management is there in this language 

right and it is extensible language 

right you can extend you can support 

more features can be supported you know 

can be added like more libraries or 

functions can be added because it is 

open source anyone can contribute 

in this thing in this open source school 

right 

and there are lots of career 

opportunities also i'm sure this point 

is very important for you guys yeah 

there is lots of career opportunities 

for this in this field 

for this language because you know i 

told you this is one of the fastest 

growing language 

in terms of developers in terms of the 

companies using this language you know 

the big giants like youtube cura 

instagram google these companies are all 

sort of thing just using this language 

python so there are many career 

opportunities and average salary is also 

high like it's from 8 to 12 per nm 

so that is why it is so popular and i'm 

sure you are aware about now this 

language some features who are using it 

the application areas of python and all 

so please make down your own notes if 

you have any doubt you can let me know 

in comment section you can ask me right 

and we'll be using python 3.x the latest 

version of 3.x because python two point 

x that version is obsolete now it's no 

longer supported 

uh from january 2020. 

so they have declared that uh they'll 

not support this version now so will you 

work on python three point x version the 

latest version whatever is there 

so in the next video 

we will see 

history of this language first 

because 

you know before going to battle better 

know your enemy 

so we'll see history of this language 

properly like the inventor of this 

language how when 

why he developed this language why this 

is called as the name python so these 

thing will be discussing in next video 

right so i'll see you in the next video 

till then bye 

 - Generated with

Can Ai born baby

The MI5 intercepts an audio file (Ex3_sound1.wav). You are suspicious that it contains secret data
embedded in the file by the LSB audio steganography method, a common method of audio
steganography consisting of hiding the secret data into the least significant bit (LSB) of an audio file.
The first task of Exercise 3 is to create an application in Python (exercise 3.1) that must extract and
read the hidden message embedded in Ex3_sound1.wav.

Create the python code to do the above

Java is a popular programming language that is widely used by organizations to build their projects. It is a general-purpose, class-based, object-oriented programming language that is fast, secure, and reliable.

Java is used for developing applications in various platforms such as laptops, data centers, scientific supercomputers, and cell phones. It is also used in the development of game consoles.

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name. Once a value is entered, the program will print the greeting message with the input value.

Data Types in Python

There are three main data types in Python: numbers, strings, and booleans.

Numbers - This includes integers and floating-point numbers.

Strings - This includes textual data.

Booleans - This includes True and False values.

Converting Data Types in Python

Python has several built-in functions for converting the types of our variables. For example, we have the int() function for converting a value to an integer:

birth_year = "1982"age = 2020 - int(birth_year)print("You are " + str(age) + " years old.")

In the above example, we use the int() function to convert the birth_year string to an integer so we can subtract it from the current year.

We also have the float() function for converting a value to a float:

num = "10.5"float_num = float(num)print(float_num)

In the above example, we use the float() function to convert the num string to a floating point number.

h tt p s: //drive .google. com/file/d/1bMBzlBP_SvnkYxeq5WTxrEEcYD-q6oa7/view?usp=sharing

answer it please