How to Check Data Type of Variable in Python Easily

In Python, you can check the data type of a variable using the type() function. Just pass the variable inside type(), and it will return the variable's data type.

Syntax

The syntax to check a variable's data type is simple:

• type(variable): Returns the data type of variable.

python

type(variable)

Example

This example shows how to check the data types of different variables like number, text, and list.

python

x = 10
print(type(x))  # Output: <class 'int'>

name = "Alice"
print(type(name))  # Output: <class 'str'>

items = [1, 2, 3]
print(type(items))  # Output: <class 'list'>

Output

<class 'int'>
<class 'str'>
<class 'list'>

Common Pitfalls

Sometimes beginners confuse the output of type() with just the name of the type. The type() function returns a type object, which prints with <class 'typename'>. To get just the type name as a string, use type(variable).__name__.

Also, avoid using type() to compare types with strings; use isinstance() for safer type checking.

python

x = 5
print(type(x))           # Outputs: <class 'int'>
print(type(x).__name__)  # Outputs: int

# Safer type check
if isinstance(x, int):
    print("x is an integer")

Output

<class 'int'>
int
x is an integer

Quick Reference

Function	Description	Example
type(variable)	Returns the type object of the variable	type(10) #
type(variable).__name__	Returns the type name as a string	type(10).__name__ # 'int'
isinstance(variable, type)	Checks if variable is of a specific type	isinstance(10, int) # True

Key Takeaways

Use type(variable) to find the data type of any variable in Python.

The output of type() shows the type object, not just the type name.

Use type(variable).__name__ to get the type name as a simple string.

For checking types in conditions, prefer isinstance() over comparing with type().

Remember that Python data types include int, str, list, dict, and many more.