Python vars() usage and examples

Built-in functions in Python

The vars() function returns the __dict__ attribute of the given object.

The syntax of the vars() function is:

vars(object)

vars() parameter

vars() accepts at most one parameter.

• object-can be a module, class, instance, or any object that has a __dict__ attribute.

vars() return value

• vars() returns the properties of the __dict__ given object.

• If the object passed to vars() does not have a __dict__ attribute, it will raise a TypeError exception.

• If no parameters are passed to vars(), the function acts likelocals() function.

Note: __dict__ is a dictionary or mapping object. It stores the object's (writable) properties.

Example: How Python vars() works

class Foo:
　　def __init__(self, a =　5, b =　10) :
　　　　self.a = a
　　　　self.b = b
　　
object = Foo()
print(vars(object))

Output result

{'a':　5, 'b':　10}

In addition, run the following statements in the Python shell:

>>> vars(list)

>>> vars(str)

>>> vars(dict)

Built-in functions in Python