How to determine the type of an object in Python?

Better Stack Team
Updated on February 3, 2023

You can use the type() function to determine the type of an object in Python. For example:

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

y = "hello"
print(type(y))  # Output: <class 'str'>

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

You can also use the isinstance() function to check if an object is an instance of a particular class or a subclass of it. For example:

 
x = 10
print(isinstance(x, int))  # Output: True
print(isinstance(x, str))  # Output: False

y = "hello"
print(isinstance(y, str))  # Output: True
print(isinstance(y, list))  # Output: False

z = [1, 2, 3]
print(isinstance(z, list))  # Output: True
print(isinstance(z, tuple))  # Output: False

You can also use the issubclass() function to check if a class is a subclass of another class. For example:

 
class A:
    pass

class B(A):
    pass

print(issubclass(B, A))  # Output: True
print(issubclass(A, B))  # Output: False
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