Data Types Variables And Operators In Python | Python Fundamentals | Great Learning

Summary

This tutorial introduces the fundamentals of Python programming, focusing on data types, variables, and operators. It explains how variables act as temporary storage for data, which can be manipulated using different types of operators. The video covers arithmetic, relational, and logical operators, providing examples of each. Additionally, it highlights the importance of understanding data types such as integers, floating-point numbers, booleans, and strings. The tutorial is aimed at beginners and promotes a free learning platform called Great Learning Academy, offering courses in various fields.

Takeaways

• 😀 The tutorial emphasizes the importance of learning Python fundamentals before moving on to complex topics.
• 🔑 Understanding data types, variables, and operators is crucial for mastering Python.
• 📚 Variables in Python are used to store data temporarily and can be changed multiple times.
• 📝 String values, denoted by quotes, are a type of data that can be stored in variables.
• 🔢 Data types in Python include integers, floating-point numbers, booleans, and strings.
• 🧮 Arithmetic operators such as +, -, *, and / are used to perform basic mathematical operations on variables.
• 🔍 Relational operators like <, >, ==, and != help compare values and return boolean results.
• 🤖 Logical operators AND (&&) and OR (||) are used to combine boolean values and determine complex conditions.
• 💡 The tutorial introduces the concept of comments in Python, which are ignored by the interpreter and used for notes.
• 🌐 Great Learning Academy offers free courses on various topics, including Python, to enhance learning opportunities.

Q & A

What is the first step in learning Python according to the script?

The first step in learning Python is to understand the fundamentals, which includes learning about data types, variables, and operators.

What is the purpose of a variable in Python?

A variable in Python serves as a temporary storage space where data can be stored and changed as needed. It holds a value that can be manipulated throughout the program.

How can you change the value of a variable in Python?

You can change the value of a variable in Python by assigning a new value to it using the assignment operator (=) followed by the new value.

What are the four main data types mentioned in the script?

The four main data types mentioned in the script are integers, floating-point numbers, booleans, and strings.

What is the difference between a single and double equal sign in Python?

In Python, a single equal sign (=) is used for assignment, while a double equal sign (==) is used for comparison to check if two values are equal.

What is a comment in Python and how is it written?

A comment in Python is a piece of code that is not executed by the Python interpreter. It is written using the hash symbol (#) followed by the comment text.

What are arithmetic operators and how are they used in Python?

Arithmetic operators in Python are used to perform mathematical operations like addition, subtraction, multiplication, and division. They include the plus (+), minus (-), multiplication (*), and division (/) symbols.

What are relational operators and what do they help to determine?

Relational operators are used to compare two values and determine their relationship. They include less than (<), greater than (>), equal to (==), and not equal to (!=) symbols.

What are logical operators in Python and give an example of each?

Logical operators in Python are used to combine conditional statements and include 'and' and 'or'. 'and' returns True if both conditions are True, while 'or' returns True if at least one of the conditions is True.

What is a complex data type in Python and how is it represented?

A complex data type in Python is used to represent complex numbers which have a real part and an imaginary part. It is represented with the real part followed by 'j' for the imaginary part, for example, '3 + 5j'.

What is the Great Learning Academy and what does it offer?

The Great Learning Academy is a free learning platform mentioned in the script that offers access to free courses such as AI and digital marketing.

Outlines

00:00

🐍 Introduction to Python Variables

This segment introduces the basics of Python programming, focusing on variables. Variables are explained as temporary storage spaces that can hold data, which can be changed over time. The tutorial demonstrates how to store and change the values of variables using examples such as storing employee names. It also mentions the launch of a free learning platform called Great Learning Academy, which offers courses in various fields including AI and digital marketing.

05:01

🔢 Exploring Python Data Types

The second paragraph delves into the different data types in Python. It explains that every variable in Python has an associated data type, which can be integers, floating-point numbers, booleans, or strings. The presenter demonstrates how to create variables for each data type and uses the 'type' function to verify the data type of the variables. The paragraph also introduces complex numbers, which have a real and an imaginary part, represented in Python with 'j'.

10:02

➗➕➖ Basic Arithmetic Operations in Python

This part of the script covers arithmetic operators in Python, which are used to perform mathematical operations on variables. The presenter creates two variables and demonstrates how to use the addition, subtraction, multiplication, and division operators. The results of these operations are shown, highlighting the basic arithmetic capabilities of Python.

15:04

🔍 Relational and Logical Operators in Python

The final paragraph discusses relational and logical operators in Python. Relational operators are used to compare values and include less than, greater than, equal to, and not equal to symbols. Logical operators, such as 'and' and 'or', are used to combine boolean values. The presenter provides examples of how these operators work with boolean variables, showing the outcomes of different combinations of true and false values.

Keywords

💡Python

Python is a high-level, interpreted programming language known for its readability and ease of use. In the video, Python is the central theme as the tutorial focuses on teaching the fundamentals of programming in Python, including data types, variables, and operators. It is used as the medium to demonstrate programming concepts.

💡Variables

Variables in programming are used to store data values. The video explains that variables act as temporary storage spaces that can hold different data types, and their values can be changed. This is illustrated by creating variables to store employee names like 'John', 'Sam', and 'Matt'.

💡Data Types

Data types refer to the classification of data items, such as numbers, strings, and booleans, which determine what kind of values a variable can store. The video covers various data types in Python, including integers, floating-point numbers, booleans, and strings, providing examples for each to demonstrate how they are used and identified in the language.

💡Operators

Operators are symbols that perform operations on variables and values. The tutorial discusses different types of operators in Python, including arithmetic, relational, and logical operators. Arithmetic operators are used for mathematical operations, relational operators compare values, and logical operators deal with boolean logic.

💡Arithmetic Operators

Arithmetic operators are used to perform mathematical operations like addition, subtraction, multiplication, and division. In the script, examples are given where the operator '+' is used to add two numbers, and the '/' operator is used for division, demonstrating basic arithmetic operations in Python.

💡Relational Operators

Relational operators are used to compare two values and return a boolean result. The video explains and demonstrates the use of '<' (less than), '>' (greater than), '==' (equal to), and '!=' (not equal to) operators to compare numerical values, showing how these operators help in decision-making within programs.

💡Logical Operators

Logical operators are used to combine boolean values and determine the flow of a program based on true or false conditions. The video discusses 'and' and 'or' operators, explaining that 'and' returns true only if both conditions are true, while 'or' returns true if at least one condition is true.

💡Boolean Values

Boolean values are a data type that can be either True or False. They are used in decision-making processes within a program. The video demonstrates boolean values with examples such as 'True' and 'False', and how they interact with logical operators to control program flow.

💡String

A string in Python is a sequence of characters enclosed in quotes, which can be single, double, or triple. The video explains that strings are used to handle text data, and it provides examples of creating string variables and checking their data type.

💡Great Learning Academy

Great Learning Academy is mentioned as a free learning platform in the video. It is used as an example of an external resource that offers free courses, suggesting that learning Python and other subjects can be accessed through various educational platforms.

💡Jupyter Notebook

Jupyter Notebook is an interactive computing environment that allows users to create and share documents containing live code, equations, visualizations, and narrative text. The video uses Jupyter Notebook to demonstrate Python code examples, showing how variables and data types are used in a practical programming environment.

Highlights

Fundamentals of Python include learning about data types, variables, and operators.

Variables in Python are used to store data temporarily and can be changed.

Data types in Python include integers, floating-point numbers, booleans, and strings.

Integers are whole numbers without a decimal point.

Floating-point numbers include decimal points and can be positive or negative.

Boolean values can be either True or False, represented as 1 or 0.

Strings are sequences of characters enclosed in quotes.

Complex numbers consist of a real part and an imaginary part, represented with 'j'.

Arithmetic operators in Python include addition, subtraction, multiplication, and division.

Relational operators help to find the relationship between two values, such as less than or greater than.

The equality operator (==) checks if two values are equal, while the assignment operator (=) assigns a value to a variable.

Logical operators include 'and' and 'or', which combine boolean values.

The 'and' operator returns True only if both operands are True.

The 'or' operator returns True if at least one of the operands is True.

Great Learning Academy offers free courses in various fields, including data science and digital marketing.

The tutorial concludes with a summary of the concepts covered on data types, variables, and operators in Python.

Transcripts

If you are a master python you would

obviously have to learn the fundamentals off Python

Before you move into complex topics you'd have

to learn about data types variables and operators

and python This brief tutorial will cover exactly

that Yeah yeah who now before we guy's

head off to the session I would like

to inform that we have launched a completely

free platform called as Great Learning Academy We

have access to free causes such as a

iCloud and digital marketing You can check out

the details in the description below Let's start

off by understanding what exactly are variables in

Python Now when you work with any programming

language your first task needs to be toe

work with data isn't it So whatever programming

language and working with you are essentially working

with data But the question or here is

how do you actually store the data that

you work with So let's say you're walking

in your company and you want to store

the names off all of the employees so

we start off with taking three employees names

So let's say we have John Sam on

dMarc with us and we'll have to store

these names somewhere So where can we store

them This is where a variable comes in

so you can consider a variable Toby ord

Temporary stories piece Now what we'll do is

we'll take this string value So this what

you see inside double quotes is known as

a string and we'll take this string value

and we will store this in this variable

called a student Either we can call the

student or employee or whatever we want toe

and this variable will have a particular address

associated with it And since this valuable is

a temporary storage space the values which are

stored inside it can be changed again and

again So initially we are storing this value

Jon inside this variable employees or students Then

after some time we can go ahead and

replace this value John with this value Sam

Similarly after some time we are changing this

value off Sam with this value off Matt

And this is how variables work in Python

So now let's go to Jupiter notebook and

I'll give you a proper example off this

Hear what I'll do is I create a

variable called us We are one I'll give

him this equal to symbol and I'll go

ahead and store the value Jon inside this

Let me click on Run Now Let me

print out the sprint off Wire one on

Let's see what will be the result So

we have successfully stored the value Jon inside

wire one and we were able to print

this out And since Marvin is a variable

it is a temporary storage piece So that

is why we can change the value which

is stored inside this So now instead off

John I want to store the value Sam

inside this I can't run again I'll you

sprint on then I'll be printing out the

value off our one And as you guys

see initially we had John inside this We

were able to change this to some Now

again after some time I'll go ahead and

change this value to mad Now let me

print out War one over here Print off

our one on And as you can see

initially we had joined Then we change it

to Sam and finally we have changed the

two mad So that was a basic in

proto variables And now another thing to be

kept in mind Us Every variable has a

data type associated with it So when you're

working with data that data can be present

in any format So when you're working with

numbers such as than 500 minus 1000 minus

3 23 these are called us in teachers

And when you work with decimal point numbers

so decimal point numbers such as 3.14 15.97

minus 1.92 all off these would be floating

point numbers Then we have something called as

bullion values So Boolean values are basically you

have only zero and one or you can

also tag them as true and false So

you have only two values over here and

those two values are true and false Or

you can also tag them a zero and

the one Then we have springs so strings

are something which you put in single coats

double coats or triple coats So these are

the four main data types over here in

Python So let's go ahead and look at

an example off each of these Now I'm

going to start off by creating an in

teacher variable so I lame this in teacher

variable as numb one And I'll store the

value off then inside this and just to

see what is the data type off this

I will use the type method and inside

the type method I'll be passing in number

one And as you guys see this tells

us that the data type off this particular

variable s in teacher Then I'll go ahead

and pass in awe Floating point number or

a decimal number So I'll call this US

Let's sit decimate and in decimate Maybe I'll

store in the value off 3.14 Now let

me go ahead and check the type off

estimates inside this I'll parts an estimate on

when I click on run Yeah I see

that this is off floating type Then we

have the next data type which is off

bullion So here I will have maybe another

variable called as log one on the inside

Log one I will storing the value through

Let me hit Run again on then let

me check the type off log one So

inside type other parts in the variable log

one And as you guys see this tells

us that this is off bull bull piece

Kimeses Oh bullion or logical type And then

we've got the character or strength So this

time I'll have my variable as car one

on and inside this I will store the

name Let's say I'll store the name Argenteuil

way You then let me check the type

off car one And when I had drunk

you see that this else is that this

is a string type were able We also

have another variable over here or another data

typo here which is off complex type so

complex as be skier data type where you

have a really part and an imaginary part

So let's say if I write something called

us three plus five j So here three

would be your riel part on defy J

would be your imaginary part You have learned

about complex numbers in your primary or in

your secondary school So normally in madness J

is represented as ice You have something called

the three Let's FYI there three would be

a really part Fire would be our imaginary

part So in python this is represented with

J instead off by So now I'll go

ahead on store this in a variable Caldas

Comp one Now let me go ahead then

check the type off this so type off

comp one And I see that this is

off complex type So we have successfully understood

what are variables and we have also looked

at the different data types of variable can

have Now we'll go ahead with her next

concept in Python which will be operators And

as the names such as operators help us

to perform simple operations on this data on

we've got arithmetic operators relational operators and logical

operators So we'll start with the first set

off operators which are the arithmetic operators Let

me go ahead toe the soup eternal back

over here and what I'll do worse I

will clear out everything which is present in

the console So there's scissors which you see

If you click on the scissors symbol you

will be able to cut out all of

the's cells Now let me add a comment

So what is the comment Commenters Something which

is not executed by the Python interpreter and

you can add a comment with this hash

symbol So after this hash symbol I am

going ahead and writing arithmetic operators I'll can't

run And as you see this is not

executed over here So whenever you add hash

symbol over here Python interpreter automatically recognizes whatever

follows hash symbol as a comment Now if

I remove this hash symbol and then if

I could can't run you would see that

we get this arrow which tells us that

this is invalid syntax Because if we don't

add the hash symbol over here then Python

interpreter would consider this these two actually as

two separate variables And since we have not

declared any variable called us arithmetic or as

operator this is giving us this error so

I'll just go ahead and at this hash

over here now after this since we have

to perform arithmetic operators and arithmetic operators basically

constitute off Plus we have plus than we

have minus than we have multiplication And then

we have division Now I'll create two variables

over here I'll have first variable number one

and I'll store the value off and inside

this Then I'll have the second variable number

two and I'll go ahead and store the

value off 20 inside this Now after creating

thes two variables Let me perform the basic

arithmetic cooperations so I'll start off by adding

numb one and numb to So I'll type

numb one less numb to And when I

perform numb one pletz numb to I get

a result off 30 So basically if you

want to add two numbers you have to

use the plus symbol between those two operates

And since tennis stored in number 1 20

is stored in number two we get a

result off 30 Then similarly I'll go ahead

and perform the subtraction operation So here I'll

have number one minus number two And when

I type number one minus number So I

get a result off minus then because then

minus 20 s minus 10 Going ahead I'll

also perform multiplication and perform multiplication I'd have

to type numb one into numb to and

when I have numb one into numb toe

over here which is basically 10 into 20

I get a result off 200 then we

are only left with division sort of performed

division I love number one Then I used

a forward slash symbol which denotes division Then

I'll have the second opera in the war

here which is numb to and I can't

run and as you guys see when we

divide 10 which 20 We get a result

off 0.5 So these were some basic arithmetic

operations Now we'll go ahead on Dwork with

relational operators so I'll just add another comment

over here on day I'll add the comment

as relational operators and whatever relational operators please

help us to find the relationship between two

operates So you can understand if one operator

the value off one or print is less

than the other operating or maybe the value

off one operating is greater than the other

operate So we will have less than symbol

greater than symbol equal to symbol and not

equal to symbol Now again we will use

the same variables Number one and number two

Let me just print out number one and

number two over here for your sick And

as you guys see we have 10 stored

in number one and 20 stored in number

two Now I want to check if the

value in number one is less than the

value in numb to so I'll type number

one I lose the less than symbol and

I'll type numb toe a hero if you

can't run And as you can see I

get the result as true Which means that

numb one is less than 20 which we

get because 10 is obviously less than 20

Now I want to check if the value

in number one is greater than the value

and number two And when I hit run

I get off false value because then is

not greater than 20 Now Going ahead I

want to check if the value in numb

one is equal to the value in numb

to So that's what you see is the

double equal toe operator You have to understand

the difference between the double equal toe operator

and single equal to operator So this is

the single equal toe operator and with the

help of single equal toe operator we are

assigning a value to a variable But when

we are using this double equal toe operator

this helps us to understand if these two

values if though operate on the left hand

side and the operate on the right hand

side are equal to each other or not

And when I click on Brand I get

a false value because then is obviously not

equal to 20 Then going ahead I have

not equal to operators So I'll have number

one It's not equal to operators represented like

this so I'll have exclamation mark Then I'll

have the equal to symbol Then I'll have

numb to or what you and I get

a true result because then is obviously not

equal to 20 So these were some off

the relational operators Going head will work with

logical operators So I'll add comment over here

to which would be logical operators And we

have to logical operators which are on board

part Let's start with so on is a

logical operator which would give us a true

result only when the boat off the operations

are true but or is a logical operator

which would give us a true result when

either off the operation is true So let's

understand this in detail so this time I

will be creating to bullion variables Over here

I'll have log one and in log one

I'll have the value truth steward Then I'll

have log to and in log to I'll

have the value fall stored so I have

logged one and lock toe over here Now

I'll perform the Ondo operator on both of

these So let me go ahead and type

log one Onda log toe And when I

hit a run I get a false value

because log one is through locked doors False

true and false will give us a false

result Now let me see what will happen

when I have log toe and log one

again I get a false result because false

Andre true is also falls Now let me

check log toe and log toe log to

and log You will also give me false

because false and false is also false And

finally I'll check log one and log one

log one and log One will give me

a true results because on the operator gives

a true result only went both off the

operations that true Now we'll head onto the

or operator So this time I'll have log

one or log toe No true or false

will give me a true result because or

will give me a true result when either

off the operations this troop then I'll have

log to or log one And this again

gives me a crew result because false or

true is again through Then I'll have log

one or log you and this again Well

let me actually change this to log one

or log one And this will give me

a true result because true or true is

also true And finally we'll have log to

or log And this is the only case

where we'll have a false results with this

false or false So only in the case

where both off your operations are false doctors

when you will get a false result when

you're working with the or operator So this

was all about different types off operators in

fightin This brings us to the end of

this tutorial on data types variables and operators

in python Before you guys sign off I'd

like to inform that we have launched a

completely free learning platform called as Great Learning

Academy But you have access to free causes

such as a iCloud and they're still marketing

But thank you very much for attending this

session and have a great learning