TheDeveloperBlog.com

Home | Contact Us

C-Sharp | Java | Python | Swift | GO | WPF | Ruby | Scala | F# | JavaScript | SQL | PHP | Angular | HTML

Python setattr() function with Examples

Python setattr() function with Examples on append(), clear(), extend(), insert(), pop(), remove(), index(), count(), pop(), reverse(), sort(), copy(), all(), bool(), enumerate(), iter(), map(), min(), max(), sum() etc.

<< Back to PYTHON

Python setattr() Function

Python setattr() function is used to set a value to the object's attribute. It takes three arguments an object, a string, and an arbitrary value, and returns none. It is helpful when we want to add a new attribute to an object and set a value to it. The signature of the function is given below.

Signature

setattr (object, name, value)

Parameters

object: It is an object which allows its attributes to be changed.

name : A name of the attribute.

value : A value, set to the attribute.

All the parameters are required.

Return

It returns None to the caller function.

Let's see some examples of setattr() function to understand its functionality.

Python setattr() Function Example 1

Here, we are adding a new attribute and setting its value by using the setattr() function. 

class Student:
    id = 0
    name = ""
    
    def __init__(self, id, name):
        self.id = id
        self.name = name
        
student = Student(102,"Sohan")
print(student.id)
print(student.name)
#print(student.email) product error
setattr(student, 'email','sohan@abc.com') # adding new attribute
print(student.email)

Output:

102
Sohan
[email protected]

Python setattr() Function Example 2

If we don't want to set any value, by default, it can be set None.

class Student:
    id = 0
    name = ""
    
    def __init__(self, id, name):
        self.id = id
        self.name = name
        
student = Student(102,"Sohan")
print(student.id)
print(student.name)
setattr(student, 'email',None) # adding new attribute having None
print(student.email)

Output:

102
Sohan
None

Python setattr() Function Example 3

We can reassign (reset) attribute's value even after calling setattr() function. See the example below.

class Student:
    id = 0
    name = ""
    
    def __init__(self, id, name):
        self.id = id
        self.name = name
        
student = Student(102,"Sohan")
print(student.id)
print(student.name)
setattr(student, 'email',None) # adding new attribute having None
student.email = "Tom@abc.com" # Assigning new value
print(student.email)

Output:

102
Sohan
[email protected]

Next TopicPython Set




Related Links:

.Net

.NET Array Dictionary List String 2D Async DataTable Dates DateTime Enum File For Foreach Format IEnumerable If IndexOf Lambda LINQ Parse Path Process Property Regex Replace Sort Split Static StringBuilder Substring Switch Tuple

Java

Core Array ArrayList HashMap String 2D Cast Character Console Deque Duplicates File For Format HashSet If IndexOf Lambda Math ParseInt Process Random Regex Replace Sort Split StringBuilder Substring Switch Vector While

Related Links

Adjectives Ado Ai Android Angular Antonyms Apache Articles Asp Autocad Automata Aws Azure Basic Binary Bitcoin Blockchain C Cassandra Change Coa Computer Control Cpp Create Creating C-Sharp Cyber Daa Data Dbms Deletion Devops Difference Discrete Es6 Ethical Examples Features Firebase Flutter Fs Git Go Hbase History Hive Hiveql How Html Idioms Insertion Installing Ios Java Joomla Js Kafka Kali Laravel Logical Machine Matlab Matrix Mongodb Mysql One Opencv Oracle Ordering Os Pandas Php Pig Pl Postgresql Powershell Prepositions Program Python React Ruby Scala Selecting Selenium Sentence Seo Sharepoint Software Spellings Spotting Spring Sql Sqlite Sqoop Svn Swift Synonyms Talend Testng Types Uml Unity Vbnet Verbal Webdriver What Wpf