WHAT IS A LIST IN PYTHON?
The python lists are containers that are used to store a list of values of any type. A list is a standard data type in python that can store a sequence of values belonging to any type. The Lists are depicted through square brackets[ ], eg following are some list in python:
[ ] #empty list
[1,2,3] #list of integers
[1,2.5,9.8,9] #list of numbers
['a', 'b', 'f', 'g', 'k', 'y'] #list of characters
['a', 9, 'b', 8, 'd', 5, 'm' ,7, 'n'] #list of mixed elements
['Arjun', 'Bhim', 'Pandav', 'Mahabharat'] #list of strings
HOW TO CREATE A LIST ?
To crate a list put a number of expressions in square brackets. That is, use square brackets to indicate the start and the end of the list, and separate the items by commas.
Thus to create a list you can write in the form given below :
L = [ ]
L = [values, Values2, ..., ]
This construct is known as list display construct.
The Empty List :
The empty list is [ ]. It is equivalent to 0 or ' ' and like them it also has truth value as false. You can also create an empty list as L = list( ) it will generate an empty list and name it as L.
Long Lists :
If a list contains many elements , then to enter such long list, you can split it across several lines, as given -
L = [100,7,6,23,9,3,59,86,35,9,21]
The brackets only appear in the beginning and at the end of the list.
Nested Lists :
A list may have an elements in it, which itself is a list. Such a list is called nested list example-
L = [12,45,[54,89,75],456,45,63]
L is a nested list with 6 elements and L[2] element is a list [54,89,75]. length of L is 6 as it counts [54,89,75] as one element. also as L[2] is a list [54,89,75], which means L[2][0] will give 54 and L[2][1] will give 89.
Less Info. Is Not Sufficient, To Know More About Lists, Visit : LIST COMPLETE THEORY
Here's a great source about learning coding.
ReplyDeletehttps://skillspot.co/best-ways-to-learn-coding/