Python vars() built-in function
From the Python 3 documentation
Return the __dict__ attribute for a module, class, instance, or any other object with a __dict__ attribute.
Introduction
The vars() function returns the __dict__ attribute of an object. This dictionary contains the object’s writable attributes. It’s a convenient way to see all the attributes of an object at once.
If called with no argument, vars() acts like locals(), returning a dictionary of the local symbol table.
Examples
Getting the attributes of an object:
class Person:
def __init__(self, name, age):
self.name = name
self.age = age
my_person = Person("Dwight", 35)
print(vars(my_person))
# Output: {'name': 'Dwight', 'age': 35}
Using vars() with no arguments:
def my_function():
x = 10
print(vars())
my_function() # Output: {'x': 10}