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Python Programming

➢ Install Python
➢ Install PyCharm - IDE for Python
➢ Python Programming
▪ Variables
▪ Data types
▪ Operators
▪ Conditional Statements
▪ Loops
▪ Functions
▪ Classes and Objects
➢ Summary
Agenda

Python Installation

Pycharm Installation

Variables
Data types
Operators
Conditional
Statements
Loops
Functions
Classes and
Objects

Python Variable
C=‘edureka’
A = 16
B = 20
C = ‘edureka’
B=20
A=16 Memory
Memory
Memory
Variable
Variables are nothing but reserved memory locations to store values. This means that when you
create a variable you reserve some space in memory.

Data types
Python Data types
A data type, in programming, is a classification that specifies which type of value a variable has and what
type of mathematical, relational or logical operations can be applied to it without causing an error.
C=‘edureka’
A = 16
B = 20
C = ‘edureka’
B=20
A=16 Integer
Datatype
Integer
Datatype
String
Datatype

Python Data types
Data types
Numeric
List
Tuple
Strings
Set
Dictionary

Tuples
Strings
Set
Dictionary
Numeric1
3
4
5
6
Lists32
Numeric Data type
 Number data types are used to store numeric values.
 There are four different numerical types in Python:
A = 16
B = 1.678
C = 2 + i6
D = 909065*35353537
Integer Type
Float Type
Complex Type
Long Type

Tuples
Strings
Set
Dictionary
Numeric1
3
4
5
6
Lists22
List Data type
The list is a most versatile datatype available in Python which can be written as a list of
comma-separated values (items) between square brackets
list1 = ['physics', 'chemistry', 1997, 2000]For example:
Accessing Values in Lists
Updating List
Delete List Elements
List Length
Concatenation
Repetition

Tuples Data type
Tuples
Strings
Set
Dictionary
Numeric1
3
4
5
6
Tuples23
Lists32
A tuple is a sequence of immutable Python objects. Tuples are sequences, just like lists.
Tup1 = ('physics', 'chemistry', 1997, 2000)For example:
Accessing Values in Tuple
Updating Tuple
Delete Tuple Elements
Tuple Length
Concatenation
Repetition

String Data type
Strings
Set
Dictionary
Numeric1
4
5
6
Lists32
Strings24
Tuples3
A string in Python is a sequence of characters. We can create Strings by enclosing
characters in quotes. Python treats single quotes the same as double quotes. Consider
the example below:
Operation Syntax
String Length print(len(string_name))
Locate a character in string print(strig_name.index(“Char"))
Count the number of times a character is
repeated in a string
print(string_name.count("Char"))
Print a part of the string print(string_name[start:stop])
Reverse a string print(string_name[::-1])
Convert the letters in a string to upper-case print(string_name.upper())
Convert the letters in a string to lower-case print(string_name.lower())
A = ‘Master Python At edureka’
B = ‘Welcome to edureka!’

Set Data type
Set
Dictionary
Numeric1
5
6
Lists32
Tuples3
Strings4 Set25
Strings4
Set is an unordered collection of unique items. Set is defined by
values separated by comma inside braces { }.
For Example:

Dictionary Data type
Dictionary
Numeric1
6
Lists32
Tuples3
Strings4
Set5 Strings4 Dictionary26
Set5
Dictionary is an unordered collection of key-value pairs. It is
generally used when we have a huge amount of data.
For Example:

Variables
Operators
Conditional
Statements
Loops
Functions
Classes and
Objects
Data types

Python Operations
Operators
Identity
Operators
Membership
Operators
Comparison
Operators
Arithmetic
Operators
Assignment
Operators
Logical
Operators
Bitwise
Operators
Operations Operators are the constructs which can manipulate the value of operands.

Arithmetic and Comparison Operators
Arithmetic Comparison
a + b
a – b
a * b
a / b
a % b
a ** b
Addition
Multiplication
Subtraction
Division
Modulus
Exponent
a == b
a != b
a > b
a < b
a >= b
a <= b
Equal To
Greater Than
Not Equal To
Less Than
Greater Than Equal To
Less Than Equal To

Assignment and identity Operator
Assignment
a = b
a + = b
a - = b
a * = b
a /= b
a** = b
Assigns value from right to left
a = a - b
a = a + b
a = a*b
a = a/b
a = a**b
Identity
is
is not
Evaluates to true if the variables on
either side of the operator point to
the same object and false
otherwise.
Evaluates to false if the variables on
either side of the operator point to
the same object and true otherwise.

Membership and Bitwise Operator
Membership
in
not in
Evaluates to true if it finds a
variable in the specified
sequence and false otherwise.
Evaluates to true if it does not
find a variable in the specified
sequence and false otherwise.
Bitwise
a & b
a | b
a ^ b
a ~ b
a <<
a >> b
Binary AND
Binary OR
Binary XOR
Binary NOT
Binary Left Shift
Binary Right Shift

Logical Operator
There are three types of logical operators: Logical AND, Logical NOT, Logical OR
a and b
a or b
Returns a if a is false, b otherwise
Returns b if b is false, a otherwise
not a Returns True if a is True, False otherwise

Variables Operators
Conditional
Statements
Loops
Functions
Classes and
Objects
Data types

Conditional Statements in Python
If Statement
Syntax:
If code
End
Start
Condition
is true
Condition
Condition
is false
Exit

Elif Statement
If code
End
Start
Condition
is true
Condition
If condition is
false
Elif codeSyntax:

Else code If code
Elif condition
is false
If condition
is true
Elif code
If condition is
false
Condition
End
StartElse Statement
Syntax:

Loops in Python
A loop statement allows us to execute a statement or group of statements multiple
times. The following diagram illustrates a loop statement:Loops
Loops
NestedForWhile
Start
Conditional Code
Condition
If condition is
false
If condition is
true
End

While Loop
While Loop
Repeats a statement or group of statements while a given condition is TRUE. It tests
the condition before executing the loop body.
Syntax:
Start
Conditional Code
End
If condition
is true
If condition
is false
Condition

For Loop
For Loop
Repeats a statement or group of statements while a given condition is TRUE. It tests
the condition before executing the loop body.
Syntax:
Start
Execute Statement (s)
End
Next item from
sequence
If no more items in the
sequenceItem from
sequence

Nested Loops in Python
Nested Loops
Python programming language allows use of one loop inside another
loop. This is called Nested Loop, below is the syntax for the same:
Syntax: Syntax:

Functions in Python
Functions
A function is a block of organized, reusable code that is used to perform a single,
related action.
Functions
Predefined
Functions
User Defined
Functions
Function
Add
Call (3,5)
Call (6,9)
Call (1,5)
Call 1
Call 2
Call 3
Return 8
Return 15
Return 6

Classes and Objects in Python
Classes and Objects
 A class is the blueprint from which specific objects are created.
 Anything that has a state and behavior is object.
Class
Object

Session In A Minute
Install Python Variables, Data types, Operators
Loops Functions
Conditional Statements
Classes and Objects

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Python Programming | Python Programming For Beginners | Python Tutorial | Edureka

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