• Edexcel GCSE CS
    • Past papers >
      • 2020 Current spec (coming soon) >
        • Programming Language Subset (PLS)
      • Old 2016 SPEC >
        • Paper 1 (specimen1)
        • Paper 1 (specimen2)
        • Paper 1 (2018)
        • Paper 2 (specimen1)
        • Paper 2 (2018)
      • OLD 2013 SPEC >
        • Sample assessment 1 (old spec)
        • Sample assessment 2 (old spec)
        • June 2017 (old spec)
        • June 2016 (old spec)
        • June 2015 (old spec)
    • Paper 1 (by topic) >
      • Algorithms
      • Application software
      • Ascii
      • Binary
      • Cache
      • Client Server
      • Cloud
      • Compression
      • Computational thinking
      • CPU
      • Cyber security
      • Database
      • Fetch decode execute cycle
      • Embedded system
      • Encryption
      • File size
      • Flow chart
      • Hexadecimal
      • High Level language
      • ISP/Internet
      • Logic
      • Magnetic HDD
      • Networking
      • Open source
      • Operating system
      • Peer to peer
      • Images (Data representation)
      • Protocols
      • RAM
      • ROM
      • Run length encoding
      • Simulation software
      • Solid state HDD
      • Sound
      • Stored program concept
      • Utility software
    • Curriculum >
      • Binary
      • Hex
      • Data Representation
      • Compression
      • Encryption
      • What is a computer
      • How does a computer work
      • Hardware
      • Operating system
      • The CPU
      • Input devices
      • Data storage
      • Networks
      • Microcontrollers
      • Computational models
      • Emerging trends
      • Virtual machine
      • Models and simulators
      • Algorithms
    • Python >
      • Help with Python >
        • Finding python
        • Python coding >
          • Comments
          • Data types
          • Variables
          • If Else
          • If Elif Else
          • Functions
          • For loop
          • While loop
          • Data structures >
            • Looping thru 2D array
          • String slicing/indexing
          • user defined function
          • Local/global variable
          • Validation and try
          • methods
          • File I/O
          • Pseudocode
          • Modules >
            • Turtle
          • Classes
        • Python questions
  • KS3/Other
    • KS3 >
      • E-Safety >
        • E-Safety intro
        • Screen time
        • E-Safety questions
      • Hardware >
        • All Hardware
        • Magnetic hard disk drive
        • Optical disk drive
        • Solid state drive
      • Software
      • Binary/Hex/Algorithms >
        • Binary
        • Hexadecimal - 1 digit
        • Hexadecimal - 2 digits
        • Algorithms
        • ASCII
        • Tests
      • Networks
      • Protocols/Cyber attacks
      • Scratch
      • Logic >
        • CPU
        • AND gate
        • OR gate
        • NOT gate
        • Logical statements
      • Python >
        • Getting started
        • Functions
        • Variables
        • VariablesToo
        • inputs
        • Selection
        • Flowcharts
        • Data types
        • Pseudocode1
        • Pseudocode2
        • Subprogram1
        • Subprogram2
        • Coding challenges
      • HTML
    • BTEC CS
    • OCR GCSE CS >
      • Past paper JUNE 2015
      • Past paper June 2014
      • Past paper MAY 2012
      • Past paper JAN 2011
      • Past paper JUN 2011
    • AQA AS-Level CS >
      • AS Curriculum >
        • Multiple choice questions
    • Business studies >
      • Keywords
      • BS Revision - Multiple choice
      • Paper 1 (9-1)
      • Paper 2 (9-1)
  • Contact/More
    • Code editor
    • Contact us
    • upload
    • Microbit ideas
    • More
  • Self test
    • 01 Random topics
    • 02 Programming
    • 03 Data
    • 04 Computers
    • 05 Communication and the internet
    • 06 The bigger picture
    • 07 Paper 2

Python coding

PYTHON DICTIONARY


Comments

Data types

Variables

If Else

If Elif Else

Functions

For loop

While loop

Data structures

String slicing

User defined function

Local/Global variable

Validation and Try

Methods

​File I/O

Pseudocode

Modules

Classes

What is a class?

​What is a class? Simply put, a class is an easy way to group similar variables and (user defined) functions together and then apply them to something called an “object”.
Picture

In the example below, our object will be a football team and the variables and functions will enable a team to score a goal or a penalty. (Before learning what a class is, you will first need an appreciation of user defined functions and variables.)

One object (e.g. football team) will be an instance of our class and have access to all the attributes within that class.

A second object (e.g. a different football team) will be a separate instance of a our class and have access to all the same attributes within that class as our first football team did.
​
Although both teams use the attributes in the class (e.g. score goals or score penalties) we like Python because holds each of the football team’s data entirely separately.


 - Here is a full example of a "class" called "FootballTeam" - See below for a breakdown

Picture

Picture
Home
Contact
Upload
Log in
  • Edexcel GCSE CS
    • Past papers >
      • 2020 Current spec (coming soon) >
        • Programming Language Subset (PLS)
      • Old 2016 SPEC >
        • Paper 1 (specimen1)
        • Paper 1 (specimen2)
        • Paper 1 (2018)
        • Paper 2 (specimen1)
        • Paper 2 (2018)
      • OLD 2013 SPEC >
        • Sample assessment 1 (old spec)
        • Sample assessment 2 (old spec)
        • June 2017 (old spec)
        • June 2016 (old spec)
        • June 2015 (old spec)
    • Paper 1 (by topic) >
      • Algorithms
      • Application software
      • Ascii
      • Binary
      • Cache
      • Client Server
      • Cloud
      • Compression
      • Computational thinking
      • CPU
      • Cyber security
      • Database
      • Fetch decode execute cycle
      • Embedded system
      • Encryption
      • File size
      • Flow chart
      • Hexadecimal
      • High Level language
      • ISP/Internet
      • Logic
      • Magnetic HDD
      • Networking
      • Open source
      • Operating system
      • Peer to peer
      • Images (Data representation)
      • Protocols
      • RAM
      • ROM
      • Run length encoding
      • Simulation software
      • Solid state HDD
      • Sound
      • Stored program concept
      • Utility software
    • Curriculum >
      • Binary
      • Hex
      • Data Representation
      • Compression
      • Encryption
      • What is a computer
      • How does a computer work
      • Hardware
      • Operating system
      • The CPU
      • Input devices
      • Data storage
      • Networks
      • Microcontrollers
      • Computational models
      • Emerging trends
      • Virtual machine
      • Models and simulators
      • Algorithms
    • Python >
      • Help with Python >
        • Finding python
        • Python coding >
          • Comments
          • Data types
          • Variables
          • If Else
          • If Elif Else
          • Functions
          • For loop
          • While loop
          • Data structures >
            • Looping thru 2D array
          • String slicing/indexing
          • user defined function
          • Local/global variable
          • Validation and try
          • methods
          • File I/O
          • Pseudocode
          • Modules >
            • Turtle
          • Classes
        • Python questions
  • KS3/Other
    • KS3 >
      • E-Safety >
        • E-Safety intro
        • Screen time
        • E-Safety questions
      • Hardware >
        • All Hardware
        • Magnetic hard disk drive
        • Optical disk drive
        • Solid state drive
      • Software
      • Binary/Hex/Algorithms >
        • Binary
        • Hexadecimal - 1 digit
        • Hexadecimal - 2 digits
        • Algorithms
        • ASCII
        • Tests
      • Networks
      • Protocols/Cyber attacks
      • Scratch
      • Logic >
        • CPU
        • AND gate
        • OR gate
        • NOT gate
        • Logical statements
      • Python >
        • Getting started
        • Functions
        • Variables
        • VariablesToo
        • inputs
        • Selection
        • Flowcharts
        • Data types
        • Pseudocode1
        • Pseudocode2
        • Subprogram1
        • Subprogram2
        • Coding challenges
      • HTML
    • BTEC CS
    • OCR GCSE CS >
      • Past paper JUNE 2015
      • Past paper June 2014
      • Past paper MAY 2012
      • Past paper JAN 2011
      • Past paper JUN 2011
    • AQA AS-Level CS >
      • AS Curriculum >
        • Multiple choice questions
    • Business studies >
      • Keywords
      • BS Revision - Multiple choice
      • Paper 1 (9-1)
      • Paper 2 (9-1)
  • Contact/More
    • Code editor
    • Contact us
    • upload
    • Microbit ideas
    • More
  • Self test
    • 01 Random topics
    • 02 Programming
    • 03 Data
    • 04 Computers
    • 05 Communication and the internet
    • 06 The bigger picture
    • 07 Paper 2