Python Programming - Class #2

Variables

We used variables to store the value to use them later. A variable is like a label, and we use “=” symbol known as the assignment operator to assign value to a variable.

For Example:-

a=23

b=28

c=a+b

print(c)

Variable Type:-

There are two main types of Variables in Python. These are Integer and Float. The most important difference between them is that a float is a number that has a decimal point, and an int is a number without a decimal point.

For Example:-

float_number = 25.0

print(type(float_number))   # print type of variable "float_number"

number = 45

print(type(number))         # print type of variable “number”

Type Conversion:-

There are a lot of Buit in functions that let you convert data from one data type to another.We can easily convert one data type to another because of buit in function.We can convert int to Float and Float to Int.

For Example:-

number = 9

print(type(number))   # print type of variable "number"

float_number = 9.0

print(float_number)

print(int(float_number))

Arithmetic Operators:-

Python Language also have Arithmetic Operators like other programming Languages like addition,Substraction,Division and Multiplication.In addition, Python has the power(**) and Modulo(%) Operator.

For Example:-

a = 45

b = 23

c = 12

d=a+b*c

print(d)

Boolean Operators:-

Boolean is a type of value that can only be True or False. In the Boolean Operators , Two Operators are compared to each other.

For Example:-

two = 2

three = 3

is_equal = two == three

print(is_equal)

Assignments:-

Augmented assignment is a single statement combining a binary operation and an assignment statement such as +=, -=, etc.

For Example:-

number = 25

print("number = " + str(number))

number -= 3

print("number = " + str(number))

number += 12

print("number = " + str(number))