python

1. Data Types
● Integers (int) Immutable
● Floating Points (float) Immutable
● Booleans (bool) Immutable
● Strings (str) Immutable
● Lists Mutable
● Tuples ( constant list ) Immutable
● Dictionaries Mutable

2. Variables & Assignments
Variable represent labelled storage locations, whose values can be
manipulated during program run.
Roll_no = 41
Name = ‘Harsh’
**Python allows dynamic typing.

3. Mutable & Immutable Variables
Mutable Variables can change their value in place.
Immutable Variables never changes their values, they reference to a
value-object. When we change value the reference address changes.

4. Some Terms
def India( ):
. print(“Atma Nirbhar. ”)
#Boycott_China
a=5
b=a+3
print(b+a)
India( )
Comment
Statement
Indentation
Function
Expression
Function call
Block
Variable

5. Age = input( ‘Enter your age : ’) default input datatype is str.
print(Age)
print(‘My age is : ’ ,Age)
print(‘My’, ’name’, ’is’, ’Harsh’) My name is Harsh
print(‘My’, ’name’, ’is’, ’Harsh’ , sep=’!’) My!name!is!Harsh
Default separator is ‘space’
print(‘My’, ‘name’, ‘is’, ‘Harsh’ ,end=’-’) My name is Harsh-
Default end is ‘endline’
Input & Output

6. Type Casting (Very Important)
Conversion of one data type into another.
There are two types :
01. Implicit Type Casting :
A = 5.0
B = 4
C = A+B
02. Explicit Type Casting :
A = 5.0
B = int(A)