there are methods append and extend in list in Python. what is the dif

Hi Aravind:

 

Python append() method adds an element to a list, and the extend() method concatenates the first list with another list (or another iterable). When append() method adds its argument as a single element to the end of a list, the length of the list itself will increase by one. Whereas extend() method iterates over its argument adding each element to the list, extending the list. The length of the list will increase by however many elements were in the iterable argument.

 

Append:Appends object at end

 gives you: [1, 2, 3, [4, 5]]

 

 extend: Extends list by appending elements from the iterable.

 

 gives you: [1, 2, 3, 4, 5]

The append method adds a single or a group of items (sequence) as one element at the tail of a list. On the other hand, the extend method appends the input elements to the end as part of the original list.

 

For more information please refer to the below link...

https://www.techbeamers.com/python-difference-between-append-and-extend/

Append: Adds its argument as a single element to the end of a list. The length of the list increases by one. 

my_list = ['C#', 'Corner']

my_list.append('Community')

print my_list

Output:

['C#', 'Corner', 'Community']  

 

extend: Iterates over its argument and adding each element to the list and extending the list. The length of the list increases by a number of elements in its argument.

Output:

['C#', 'Corner', 1, 0, 2, 4]  

append adds the collection at end while extend adds the element