Casting in Python | Conversion of datatypes

Casting in python

Casting is conversion of value of a variable from one data type to other

example -- Converting  X = 3  ( is a integer) to X = 3.0 (is a float)

There are basically three types of data type

1. Casting into integer.
2. Casting into string.
3. Casting into float.

Casting into integer

Casting float into integer or casting string into integer provided the content of string is a whole number

We use int() for this type of casting.

X = int(3.5)           #value of x will be 3

Y= int ("3")           #value of y will be treated as integer and we can perform arithmetic operation

Z = int("hello")  #this will throw error the value is not whole number

Casting into string

Casting float into string or casting integer into string

We use str() constructor for casting.

 X = str(3)  # 3 will be considered as string and arithmetic operation can't be done

Y = str(3.0) #3.0 will be considered as string and arithmetic operation can't be done

Casting into float

We use float() constructor to cast string or integer into float.

It should be kept in mind that a string can only be converted into float if its value is integer or decimal

Questions

1.Take a variable with value 3 and another value 2 use addition operation to add them to get 32 as output and then add 8 to it to get 40