Notebook

Variable Basics

• Rules for nameing a Variable.

• Can't use reverse keywords(e.g. True,for)

• Can't use special character(e.g. $furit)

• Variable name must be begin with letter or _ (name = "Shan", cant use 6744 = "number " as variable name)

• Variable names are case senstive.

Numbers

There are three numeric types in Python:

• int
• float
• complex

Variables of numeric types are created when you assign a value to them:

String

• String slicing Index tells us about which charachter is located at whi
• len() function
• in operator
• not in operator
• str does not support item assignment
• replace() function
• dir() function
• upper() and lower() function
• is digit() function
• index() function
• str() function
• \ to escape ' and ""
• multiline string using tripple quotes (''')
• \n and \t characters
• +operator to join two strings

List

Lists are used to store multiple items in a single variable, lists are one of 4 built-in data types in Python used to store collections of data, the other 3 are Tuple, Set, and Dictionary, all with different qualities and usage. Lists are created using square brackets:

• Access list items using index
• Access list items from reverse using negative index
• Slicing to access multiple list items
• len() function
• in operator to check if element exist in a list or not
• append() function to append the new element in the list
• insert() function to insert element at a given position in the python list
• Add or concate two lists using + operator
• Replace list items using index operator
• Replace multiple list items using slicing

if..else condition

if statement is a programming conditional statement that, if proved true, performs a function or displays information.

• Conditional operators for if
• if..elif..else
• Ternary operator

For Loop

A for loop is a repetition control structure that allows you to efficiently write a loop that needs to be executed a specific number of times, a for loop is useful when you know how many times a task is to be repeated.

• for loop introduction
• range() function
• break in for loop
• continue keyword
• while loop

Function

• Add function