Python Arrays

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In this tutorial, we will be discussing about python arrays. But Before getting started with python arrays, it is very important to note that python does not contain default input-data setting for its arrays but uses its python list which is found in the Numpy data import library

Generally, Python arrays are unique variables that can contain multiple values ​​at the same time. Arrays are the basic foundation in all data-science in python. 

To get the full package of python array, you need to install NumPy from the import library and then use the array () function to create an array and use it as an input list.

Let us now see how python array functions work as a list. Arrays are normally used to identify a particular object among a group of objects, which means we are just going to select an object from a set of objects.

 A python array begins with an opening square and end with a closing square bracket. Objects inside the square brackets are separated by commas.

How to access array element

An array element can be access by referring to the index number

Example

fruits= ["apple", "watermelon", "cherry"]
x = fruits[0]
print(x)

OUTPUT

Finding the length of an array

We Use the len() to know the exact length of an array

colors = ["green", "violet", "red"]
x = len(colors)
print(x)

In this case, the len() function instructs the compiler to count the total number of objects within the square bracket

OUTPUT

Looping array elements

Use the for in to through all the arrays elements

colors = ["green", "brown", "purple"]
for x in colors:
  print(x)

As we earlier saw in array addition, the function for in in looping of arrays simply instructs the compiler to list the objects within the square bracket.

OUTPUT

How to add array elements

Addition is done by using the append method

fruits = ["apple", "cherry", "watermelon"]
fruits.append("Honda")
print(fruits)

The compiler follows the instruction of the append function. Its adds what is in between the brackets of the append fuction.

OUTPUT

How to remove arrays

colors = ["red", "blur", "violet"]
colors.remove("violet")
print(colors)

The compiler follows the instruction of the remove function that is it subtracts what is in the bracket of the remove function

OUTPUT

In python, there are many default input list which can be used on arrays. These standards types are found in the NumPy package as python itself does support data input list.