List as array - Python

List as array:

Array:

Array is a collection of similar elements. Elements in the array can be accessed by index. Index starts with 0. Array can be handled in python by module named array.

To create array have to import array module in the program.

Syntax :

import array

Syntax to create array:

Array_name = module_name.function_name(‘datatype’,[elements])

example:

a=array.array(‘i’,[1,2,3,4])

a- array name

array- module name

i- integer datatype

Example

Program to find sum of array elements

import array

sum=0

a=array.array('i',[1,2,3,4])

for i in a:

sum=sum+i

print(sum)

Output

10

Convert list into array:

fromlist() function is used to append list to array. Here the list is act like a array.

Syntax:

arrayname.fromlist(list_name)

Example

program to convert list into array

import array

sum=0

l=[6,7,8,9,5]

a=array.array('i',[])

a.fromlist(l)

for i in a:

                  sum=sum+i

print(sum)

Output

35

Methods in array

a=[2,3,4,5]