Python Lists (JNNC Technologies)

Dealing with data in a structured format is quiet generous, and this is possible if those data are set accordingly in a specific manner. So, Python provides these data structures named ‘lists’ and ‘tuples’ that are used to organize data in  single set. Python has 6 built-in sequences and among them the most famous are “lists and tuples”.

The lists are containers that hold a number of other objects in a given order. It usually puts into practice the sequence protocol and allows programmers to add or remove objects from that sequence. Each element of the sequence is assigned a number i.e. he index and the first index is 0 (zero). This versatile data-type of Python is written in a sequence of list separated by commas between expressions.

Creating Lists

To build a list, just put a number of expressions in square brackets. The syntax is:

Syntax:

lst1 = [ ]  # lst1 is the name of the list
    lst2 = [expression1 , …. , expression_N]

Example:

#!/usr/bin/python

    lst1 = ['computersc', 'IT', 'CSE'];
    lst2 = [1993, 2016];
    lst3 = [2, 4, 6, "g", "k", "s"];