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Type casting in Python


Type Casting is defined as the method of converting the variables/values data type into a certain data type for matching the operation needed to be performed by the users. This can be performed with the use of construction functions such as int(). string(), float(), etc. 

The execution of the process in Type Casting can be performed by using two different techniques available in Type Casting.

Two types of Type Casting techniques are:

1. Implicit Type Casting.
2. Explicit Type Casting.

1. Implicit Type Casting

In Implicit Type Casting, users don’t have to involve in this process. The Python automatically converts one data type into another data type. It does not require the  involvement of the user. The conversion of lower data types is supported by Python such as integer to float conversion avoids loss of data. This Type of Casting is also known as Upcasting.

2. Explicit Type casting

The data type of an object is converted to the needed data type by the user or programmer in Exliplicit Type Casting.

To perform Explicit Type Casting, the predefined functions are used such as int(), float(), str(), bool(), etc in Python. In this Type Castin, the users have to involve in this process. It requires the involvement of users for performing Type Casting.


(Required datatype) (Expression)

Examples of Implicit Type Casting in Python.

Example 1 : Program to demonstrate Implicit Type conversion/casting.

# Python program for demonstrating implicit type casting

# program for adding two numbers

x = 26

y = 20

print("Type of first number(x) :", x, type(x))

print("Type of second number(y) :", y, type(y))

z = x + y

print("The resulting variable type is(z) :",

z, type(z))   


Type of first number(x) : 26 <class 'int'>

Type of second number(y) : 20 <class 'int'>

The resulting variable type is(z) : 46 <class 'int'>

In the above example. the adding() function is defined. first input number type, second input number type and the type of result is printed.

Example 2:

# Python program for demonstrating implicit type casting

# x will automatically converts into int

x = 8


# y will automatically converts into float

y = 6.0


# z will automatically convert into float

# as it is a float addition

z = x + y



# m will automatically converts into float

# as it is a float multiplication

m = x * y




<class 'int'>

<class 'float'>


<class 'float'>


<class 'float'>

Examples of Explicit Type Casting in Python.

Example 1:

# Python program for demonstrating Explicit type casting

first_num = 298

second_num = "592"

# printing the data types

print("Data type of first_num :",type(first_num))

print("Data type of second_num before Type Casting:",type(second_num))

second_num = int(second_num)

print("Data type of second_num after Type Casting:",type(second_num))

sum =  first_num + second_num

# printing the resultant data type

print("Sum of first_num and second_num:", sum)

print("Data type of the sum:",type(sum))


Data type of first_num : <class 'int'>

Data type of second_num before Type Casting: <class 'str'>

Data type of second_num after Type Casting: <class 'int'>

Sum of first_num and second_num: 890

Data type of the sum: <class 'int'>

Now, we are using constructor functions like int(), float(), str() etc  for defining Explicit Type Casting

Example 2: Here, we are performing Explicit Type Casting by converting string, float, bool data type into integer data type with int() function.

# Python program for demonstrating

# Explicit type Casting

print("typecast to integer type")

print(int(15.9)) # float to int

print(int(True)) # bool to int

print(int(False)) # bool to int

print("321") # str to int



typecast to integer type





Example 3: Here, we are performing Explicit Type Casting by converting string, bool, int data type into float data type with float() function.

# Python program for demonstrating

# Explicit type Casting

print("converting to floating type")

print(float(19)) # int to float

print(float(True)) # bool to float

print(float(False)) # bool to float

print(float("456")) # string to float



converting to floating type





Example 4: Here, we are performing Explicit Type Casting by converting list, tuple, float, int data type into bool type using the bool() function.

# Python program for demonstrating

# Explicit type Casting

print("converting to boolean type")

print(bool(23)) # integer to bool

print(bool(1.1)) # float to bool

print(bool([4,5,6])) # list to bool

print(bool()) # tuple to bool



converting to boolean type





Example 5: Here, we are performing Explicit Type Casting by converting list, float, int data type into string type using str()function.

# Python program for demonstrating

# Explicit type Casting

print("converting to string type")

print(str(456)) # integer to string

print(str(15.12)) # float to string

print(str([20, 30, 40])) # list to strings


Converting to string type



[20, 30, 40]


In the above article, we have seen Type Casting in Python. Python offers two types of conversions Implicit Type and Explicit Type Casting/Conversions. You have learned the concept of both conversions in Python. Now, you can easily perform Type Casting operations in Python.