How to use __dict__() Magic Method In Python
To find attributes we can also use magic method __dict__. This method only returns instance attributes.
Example:
Python3
class Number : # Class Attributes one = 'first' two = 'second' three = 'third' def __init__(self, attr): self.attr = attr def show(self): print(self.one, self.two, self.three, self.attr) # Driver's coden = Number(2)n.show()# using __dict__ to access attributes# of the object n along with their valuesprint(n.__dict__)# to only access attributesprint(n.__dict__.keys())# to only access valuesprint(n.__dict__.values()) |
Output:
first second third 2
{'attr': 2}
dict_keys(['attr'])
dict_values([2])
How to Get a List of Class Attributes in Python?
A class is a user-defined blueprint or prototype from which objects are created. Classes provide a means of bundling data and functionality together. Creating a new class creates a new type of object, allowing new instances of that type to be made. Each class instance can have attributes attached to it for maintaining its state. Class instances can also have methods (defined by its class) for modifying its state.
Example:
Python3
# Python program to demonstrate# classesclass Student: # class variable stream = "COE" # Constructor def __init__(self, name, roll_no): self.name = name self.roll_no = roll_no # Driver's codea = Student("Shivam", 3425)b = Student("Sachin", 3624)print(a.stream)print(b.stream)print(a.name)print(b.name)# Class variables can be accessed# using class name alsoprint(Student.stream) |
Output :
COE COE Shivam Sachin COE
Note: For more information, refer to Python Classes and Objects.