The getattr function in Python retrieves the value associated with a specified attribute of an object. In cases where the attribute does not exist, it provides a default value instead.
Python getattr Function Syntax
It has the following syntax:
getattr(object, attribute, default)
Parameters
- object : An object whose named attribute value is to be returned.
- attribute : Name of the attribute of which you want to get the value.
- default (optional): It is the value to return if the named attribute does not found.
Return
It provides the value associated with a specified attribute of an object. In the event that the attribute is not present, it yields the designated default value.
Different Examples for Python getattr Function
In this section, we will explore multiple examples of the Python getattr function.
Python getattr Function Example 1
The example provided below demonstrates how the getattr function operates in Python.
class Details:
age = 22
name = "Vicky"
details = Details()
print('The age is:', getattr(details, "age"))
print('The age is:', details.age)
Output:
The age is: 22
The age is: 22
Clarification: In the preceding illustration, we define a class referred to as Details, which contains several variables such as age, name, and others. This class outputs the values associated with the named attributes of an instance.
Python getattr Function Example 2
The following example demonstrates how the getattr function operates when the specified attribute name cannot be located.
class Details:
age = 22
name = "Vicky"
details = Details()
# when default value is provided
print('The gender is:', getattr(details, 'gender', 'Male'))
# when no default value is provided
print('The gender is:', getattr(details, 'gender'))
Output:
The gender is: Male
AttributeError: 'Details' object has no attribute 'gender'
