Core Python - Beginner & List Intro

Python

• English to Code
• Interpreter Language --> Line by line execution
• In Java --> First it will create Binary file which is nothing but .CLASS File and this CLASS file will execute.
• In python hello.py --> python hello.py ( Execution )

Data Structure

• How do you store the data ?
• List , Tuple , Dictionary and Set
• The value will be stored in the RAM.
• Identifier is like a LABEL.
• The Value is stored in the RAM , but to REFER the place in the RAM is called the name. i.e the LABEL --> in the below example.

Boolean

• Let it be like a Question related.

None

• print(None)

Continue ...

• In Python all are Object.
• What is an Object ? --> Eg., Pen is an Object.
• Object will have 2 things:

1. Attribute --> Ink or ball point or brand
2. Functionality --> what you are going to do with this Pen ? or Action.

• How to know about the Object ?

• For the string , these many objects are there.

Data Structures

List

• Its a Array
• Its a Dynamic Array
• Consecutive storage.
• In Array , it will be fixed . That means the size , also same datatypes. But in Python we have Dynamic Array.
• No Fixed Size and any data type.

• Negative index is also available.

• Square bracket and position is important.

• Going to upend a Alphabet.

• In first position , upend "G". ( Its like moving and inserting the alphabet ) . It won't delete anything .

• Even you can replace --> vowels[2] = "H"
• Store all datatypes.