In Python, the vars() function is a powerful tool for accessing an object’s attributes or creating dictionaries from objects. This article aims to provide a comprehensive guide on its usage, applications, and significance through detailed examples.
Understanding vars() Function
The vars() function in Python is utilized to access an object’s attributes or convert objects into dictionaries. Its syntax is straightforward:
vars(object)
Here, object represents the object whose attributes are to be accessed.
Example 1: Accessing Object’s Attributes
class MyClass:
def __init__(self, name, age):
self.name = name
self.age = age
obj = MyClass("John", 30)
attributes = vars(obj)
print("Object's attributes:", attributes)
Output 1:
Object's attributes: {'name': 'John', 'age': 30}
Example 2: Modifying Object’s Attributes
class MyClass:
def __init__(self, name, age):
self.name = name
self.age = age
obj = MyClass("John", 30)
attributes = vars(obj)
attributes['age'] = 35
print("Modified attributes:", attributes)
print("Modified age:", obj.age)
Output 2:
Modified attributes: {'name': 'John', 'age': 35}
Modified age: 35
Example 3: Creating Dictionary from Object
class MyClass:
def __init__(self, name, age):
self.name = name
self.age = age
obj = MyClass("John", 30)
obj_dict = vars(obj)
print("Dictionary from object:", obj_dict)
Output 3:
Dictionary from object: {'name': 'John', 'age': 30}
Points to Remember
- The
vars()function is used to access an object’s attributes or create dictionaries from objects. - It returns a dictionary representing the object’s attributes.
- Changes made to the dictionary returned by
vars()reflect changes in the object’s attributes.
