How to convert Nonetype to int or string?

Sometimes, Nonetype is not preferred to be used in the code while in production and development. So, we generally convert None to string or int so that we can perform favorable operations. In this article, we will learn about how to convert Nonetype to int or string in Python.

Convert NoneType to String in Python

Below are the ways by which we can convert the None type to an empty String in Python:

1. Using the if Statement
2. Using get() Method
3. Using Conditional Statements

Convert NoneType to String Using ‘if’ Statement

In this example, the variable ‘n’ is initially set to ‘None’. The conditional if statement check replaces ‘None’ with an empty string (`””`) if ‘n’ is indeed ‘None’ and hence, converts the NoneType with the string.

Python3

n = None
print("Before Converting:", type(n))

if n is None:
    n = ""

print("Converting None into String:", type(n))

Output

Before Converting: <class 'NoneType'>
Converting None into String: <class 'str'>

Convert None to Empty String Using get() Method

In this example, the variable `name` is initially set to `None`. The code then converts `name` to a string by using get() method, effectively replacing `None` with an empty string (`”`) if `name` is `None and hence, converting the NoneType with the string.

Python3

name = None
print("Before Converting:", type(name))
name = str({None: ''}.get(name, name))
print("After Converting", type(name))

Output

Before Converting: <class 'NoneType'>
After Converting <class 'str'>

Python NoneType to String Using Conditional Statements

In this example, the variable ‘name’ is initially set to ‘None’. The code then converts ‘name’ to an empty string (`””`) if it is ‘None’; otherwise, it converts it to a string using conditional if-else statements.

Python3

name = None
print("Before Converting:", type(name))

name = "" if name is None else str(name)

print("After Converting:", type(name))

Output

Before Converting: <class 'NoneType'>
After Converting: <class 'str'>

Convert NoneType to Int in Python

If you have a value in Python that is None, meaning there’s no value or it’s undefined, and you want to treat it as the number 0, you can use a line of code like result = 0 if none_value is None else int(none_value). This is useful when working with situations where you need to handle the absence of values and perform numeric operations in Python.

Below are some ways by which we can convert Nonetype to int in Python:

• Using Conditional Statements
• Using int() Function

Python None to Int Using Conditional Statements

In this example, the variable `none_value` is initially set to `None`. The code uses a conditional statement (`0 if none_value is None else int(none_value)`) to set the variable `result` to 0 if `none_value` is `None`, and otherwise, it converts `none_value` to an integer using `int(none_value)`.

Python3

name = None
print("Before Converting:", type(name))

result = 0 if name is None else int(name)

print("After Converting:", type(result))

Output

Before Converting: <class 'NoneType'>
After Converting: <class 'int'>

Convert None to Int Using int() Function

In this example, the variable `none_value` is initially set to `None`. The code uses the `int()` function to convert `none_value` to an integer, and if `none_value` is `None`, it defaults to 0 using the `or` operator.

Python3

name = None
print("Before Converting:", type(name))

result = int(name or 0)
print("After Converting Using int() Function:", type(result))

Output

Before Converting: <class 'NoneType'>
After Converting Using int() Function: <class 'int'>