Array In Python

Introduction

 

In this article, I will explain Array in Python. Arrays are used to store one or more values in one single variable. An array is a set of items saved at contiguous reminiscence locations. The concept is to store a couple of items of the identical kind together. This makes it less difficult to calculate the position of each element.

 

 

Access the Elements of an Array.

 

Array element is referring to the index number.

 

Example

color= ["red", "blue", "green"]
print (color [0]) #red is 0 position
print (color [2]) #green is 2 position

Output

 

First array element and last array element value.

 

 

 

Modifying elements

 

Change the array element. 

 

Example

color= ["red", "blue", "green"]
color [0] ="black"
print(color)# red changes to black.

Output

 

First array element value change.

 

 

Access the array Elements in reverse order.

 

The array element is accessed in a reverse direction.

 

Example

color= ["red", "blue", "green"]
print (color [-1]) #green is the last position.

Output

 

Last array element value.

 

 

The length of an array.

 

The len() method is used to return the number of elements present in an array.

 

Syntax

Len(list)

Example

color= ["red", "blue", "green"]
print(len(color))

Output

 

Return the number of elements in the “color” array.

 

 

Adding array elements.

 

The append () method is used to add an element in the last position of the array.

 

Syntax

list.append()

Example

color= ["red", "blue", "green"]
color.append("yellow")
print(color)#add the element in the last position.

Output

 

Add an element in the last position.

 

 

Removing array elements.

 

The pop () method is used to remove an element from the array.

 

Syntax

list.pop()

Example

color= ["red", "blue", "green"]
color.pop(1)
print(color)#remove array 1.

Output

 

Remove the element from the array.

 

 

Reverse array element.

 

The reverse () method is used to reverse the order of elements.

 

Syntax

list.reverse()

Example

color= ["red", "blue", "green"]
color.reverse()
print(color)#reverse the elements.

Output

 

Reverse the order of elements

 

 

Count array element.

 

The count () method is used to return the number of elements with the specified value.

 

Syntax

list.count()

Example

color= ["red", "blue", "green"]
print(color.count("blue"))#blue color is which position.

Output

 

 

Extend array element.

 

The extend () method is used to add two list elements.

 

Syntax

extend.append()

Example

color= ["red", "blue", "green"]#first list
animal=["rat","cat","dog"]#second list
color.extend(animal)
print(color)#add two list

Output

 

Add two list elements.

 

 

Conclusion

 

In this article, we have seen the Array in Python. I hope this article was useful to you. Thanks for reading!