Python Basic

Dictionaries In Python (Python Tutorial #8)

Classes and Objects

object:

• properties (attributes/ instance variables)
  • name: “Tom”
  • color: “red”
  • weight: 30
• functionalities (method)
  • introduce_yourself()

use r1 to contain all the info

object:

• properties (attributes/ instance variables)
  • name: “Jerry”
  • color: “blue”
  • weight: 40
• functionalities (method)
  • introduce_yourself()

use r2 to contain all the info

question: r1 and r2 are so similar, way to organize them? class is the answer, it is the blueprint of objects

class:

-name: -color: -weight:

• introduce_yourself()

in the above code for class, properties are not defined, because class does not refer to any perticular object, it is the blueprint!

class needs a name

constructor used to set attributes for class we use the same name for constructor as for class

you will see example below that self refers to any perticular object # Classes and Objects with Python - Part 1 (Python Tutorial #9)

Classes and Objects with Python - Part 2 (Python Tutorial #10)

Using Boolean in Python (Python Tutorial #11)

List Comprehension Basics with Python (Python Tutorial #12)

Then reverse the order, there are two ways to do so:

How To Use Sets in Python (Python Tutorial #13)

A set is a type of data stores a set of things.

a set of unique things

{1, 3} <- 3 ->{1, 3}

Do more practice at https://codingbat.com/python or https://projecteuler.net/