What does the array extend() function do in Python?

Overview

An array in python is used to store multiple values or elements of the same datatype in a single variable. The extend() function is simply used to attach an item from iterable to the end of the array. In a simpler term, this method is used to add an array of values to the end of a given or existing array.

Syntax

array.extend(iterable)

Parameter value

The extend() function takes an array as its parameter value.

Example

# importing the array module
import array as arr
# creating an integer data type array
x = arr.array('i', [1,2,3,4,5,6,7])
# using the extend function to add an array to the existing array
x.extend([8,9,10])
# printing the new array
print(x)

Explanation

  • Line 2: We import the array module.
  • Line 5: We use the array.array() function to create an integer type of array.
  • Line 8: We use the extend() method to add an array with elements 8, 9, and 10 to the original array.
  • Line 11: We print the new extended array.
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