In this article, we’ll discuss the differences between type() and isinstance() in Python and how to use them effectively.
When coding in Python, it’s essential to understand the differences between type() and isinstance(). Both functions serve different purposes, and it’s crucial to use them correctly to ensure the accuracy and efficiency of your program.
Type() in Python
The type() function in Python returns the type of the object passed to it as a parameter. So, for example, if you pass an integer to type(), it will return the type ‘int.’ Similarly, if you pass a string, it will return ‘str.’
Here’s an example of how to use type() in Python:
x = 5
print(type(x))
The output of the above program will be:
<class 'int'>
Isinstance() in Python
The isinstance() function in Python is used to check whether an object is an instance of a particular class. This function takes two arguments – the object you want to check and the class you want to check against.
Here’s an example of how to use isinstance() in Python:
x = 5
print(isinstance(x, int))
The output of the above program will be:
True
Differences between type() and isinstance()
The primary difference between type() and isinstance() is their functionality. Type() returns the type of the object passed to it, whereas isinstance() checks whether a thing is an instance of a particular class.
Here’s a table that highlights the key differences between type() and isinstance():
| Function | Returns | Checks against |
|---|---|---|
| type() | The type of the object | No class |
| isinstance() | True or False | A specific class |
It’s also worth noting that isinstance() can check whether an object is an instance of a subclass, whereas type() cannot. This is because isinstance() checks against the object’s inheritance hierarchy, whereas type() only checks the object’s immediate type.
Here’s an example of how to use isinstance() to check whether an object is an instance of a subclass:
class Vehicle:
pass
class Car(Vehicle):
pass
my_car = Car()
print(isinstance(my_car, Vehicle))
The output of the above program will be:
True
Type() and isinstance() are two essential functions in Python that serve different purposes. Type() returns the type of the object passed to it, whereas isinstance() checks whether an object is an instance of a particular class.
It’s crucial to use these functions correctly to ensure the accuracy and efficiency of your program. Understanding the differences between the two functions is the first step in using them effectively.
We hope this article has helped you better understand the differences between type() and isinstance() in Python.
Thanks for reading. Happy coding!
