Friday 27 November 2020

List in Python

The simplest data structure in Python and is used to store a list of values.

Lists are collections of items (strings, integers, or even other lists).

Each item in the list has an assigned index value.

Lists are enclosed in [ ]

Each item in a list is separated by a comma

Unlike strings, lists are mutable, which means they can be changed.

Examples:

emptyList = [ ]  

list1 = ['one, two, three, four, five']

numlist = [1, 3, 5, 7, 9]

mixlist = ['yellow', 'red', 'blue', 'green', 'black']

An empty list is created using just square brackets:

list = [] 



Method

Description

Python List append()

Add Single Element to The List

Python List extend()

Add Elements of a List to Another List

Python List insert()

Inserts Element to The List

Python List remove()

Removes Element from the List

Python List index()

returns smallest index of element in list

Python List count()

returns occurrences of element in a list

Python List pop()

Removes Element at Given Index

Python List reverse()

Reverses a List

Python List sort()

sorts elements of a list

Python List copy()

Returns Shallow Copy of a List

Python List clear()

Removes all Items from the List

Python any()

Checks if any Element of an Iterable is True

Python all()

returns true when all elements in iterable is true

Python ascii()

Returns String Containing Printable Representation

Python bool()

Converts a Value to Boolean

Python enumerate()

Returns an Enumerate Object

Python filter()

constructs iterator from elements which are true

Python iter()

returns iterator for an object

Python list() Function

creates list in Python

Python len()

Returns Length of an Object

Python max()

returns largest element

Python min()

returns smallest element

Python map()

Applies Function and Returns a List

Python reversed()

returns reversed iterator of a sequence

Python slice()

creates a slice object specified by range()

Python sorted()

returns sorted list from a given iterable

Python sum()

Add items of an Iterable

Python zip()

Returns an Iterator of Tuples

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