Data Types Variables And Operators In Python | Python Fundamentals | Great Learning
Summary
TLDRThis 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
🐍 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.
🔢 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'.
➗➕➖ 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.
🔍 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.
Mindmap
Keywords
💡Python
💡Variables
💡Data Types
💡Operators
💡Arithmetic Operators
💡Relational Operators
💡Logical Operators
💡Boolean Values
💡String
💡Great Learning Academy
💡Jupyter Notebook
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
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