Array

An Array is a collection of items or elements all having the same datatypes. An element from an array can only be accessed from its index value. 

Example: Let’s create an array of cars.

cars = [“Kia”, “Toyota”, “Ford”, “Tesla”]

 

In order to get the value Ford as output, we need to write print (cars [ 2 ] ) 

In Python, a List is very similar to an Array . It contains a list of elements separated by commas and its elements are written with square brackets [ …. ] .

A value from a List can be accessed from its index value and the syntax is-
List_name [ index_num ]

Now see the code below:

 

After running the above piece of code, we get an output of:

 

In the above piece of code, fruits is a List containing 6 elements. The value at position 0 is “apple ”, at position 1 is “orange ” and so on. 

x is a variable holding a string value. The value at position 0 is “t” , at position 1 is “h ” and so on.

len( ) function is used to get the length of the list .

In Line 4 and 5 we are performing Slicing operation. 

print ( fruits [ 2 : 4] ) means print elements from position 2 (including its value ) to position 4 (excluding its value ).

 

Output: [‘banana’, ‘mango’]

print ( x [ 2 : 8 ] ) means print the values of x (“this apple is tasty ”) from position 2 (including its value ) to position 8 (excluding its value ). 

 

Output: is app

In the next post we will see how to insert and delete data in to an array