Strings
Python string is a sequence of characters, and each character can be individually accessed using its index.

String
You can create Strings by enclosing text in both forms of quotes - single quotes or double quotes.

variable_name = "String Data"

Slicing
Slicing refers to obtaining a sub-string from the given string. The following code will include index 1, 2, 3, and 4 for the variable named var_name

var_name[1 : 5]

isalnum() method
Returns True if all the characters in the string are alphanumeric, else False

string_variable.isalnum()

isalpha() method
Returns True if all the characters in the string are alphabets

string_variable.isalpha()

isdecimal() method
Returns True if all the characters in the string are decimals

string_variable.isdecimal()

isdigit() method
Returns True if all the characters in the string are digits

string_variable.isdigit()

islower() method
Returns True if all characters in the string are lower case

string_variable.islower()

isspace() method
Returns True if all characters in the string are whitespaces

string_variable.isspace()

isupper() method
Returns True if all characters in the string are upper case

string_variable.isupper()

lower() method
Converts a string into lower case equivalent

string_variable.lower()

upper() method
Converts a string into upper case equivalent

string_variable.upper()

strip() method
It removes leading and trailing spaces in the string

string_variable.strip()

List
A List in Python represents a list of comma-separated values of any data type between square brackets.

var_name = [element1, element2, ...]

index method
Returns the index of the first element with the specified value

list.index(element)

append method
Adds an element at the end of the list

list.append(element)

extend method
Add the elements of a given list (or any iterable) to the end of the current list

list.extend(iterable)

insert method
Adds an element at the specified position

list.insert(position, element)

pop method
Removes the element at the specified position and returns it

list.pop(position)

remove method
The remove() method removes the first occurrence of a given item from the list

list.remove(element)

clear method
Removes all the elements from the list

list.clear()

count method
Returns the number of elements with the specified value

list.count(value)

reverse method
Reverses the order of the list

list.reverse()

sort method
Sorts the list

list.sort(reverse=True|False)

Tuples
Tuples are represented as comma-separated values of any data type within parentheses.

Tuple Creation

variable_name = (element1, element2, ...)

Lets talk about some of the tuple methods:

count method
It returns the number of times a specified value occurs in a tuple

tuple.count(value)

index method
It searches the tuple for a specified value and returns the position.

tuple.index(value)

Sets
A set is a collection of multiple values which is both unordered and unindexed. It is written in curly brackets.

Set Creation: Way 1

var_name = {element1, element2, ...}

Set Creation: Way 2

var_name = set([element1, element2, ...])

Set Methods
Lets talk about some of the methods of sets:

add() method
Adds an element to a set

set.add(element)

clear() method
Remove all elements from a set

set.clear()

discard() method
Removes the specified item from the set

set.discard(value)

intersection() method
Returns intersection of two or more sets

set.intersection(set1, set2 ... etc)

issubset() method
Checks if a set is a subset of another set

set.issubset(set)

pop() method
Removes an element from the set

set.pop()

remove() method
Removes the specified element from the set

set.remove(item)

union() method
Returns the union of two or more sets

set.union(set1, set2...)

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