Practice Code Challenge Theater Work

Learning Goals

• Classes and Instances
• Class and Instance Methods
• Variable Scope
• Object Relationships
• lists and list Methods

Introduction

The Flatiron Theater Company is holding Auditions!

An actor may only Audition for one Role, while a Role may have many Auditions for it!

Getting started

To get started, run pipenv install while inside of this directory.

Instructions

Build out all of the methods listed in the deliverables. The methods are listed in a suggested order, but you can feel free to tackle the ones you think are easiest. Be careful: some of the later methods rely on earlier ones.

You'll need to create your own sample instances so that you can try out your code on your own. Make sure your relationships and methods work in the console.

We've provided you with a tool that you can use to test your code. To use it, run python debug.py from the command line. This will start a ipdb session with your classes defined. You can test out the methods that you write here. You can add code to the debug.py file to define variables and create sample instances of your objects.

Writing error-free code is more important than completing all of the deliverables listed - prioritize writing methods that work over writing more methods that don't work. You should test your code in the console as you write.

Similarly, messy code that works is better than clean code that doesn't. First, prioritize getting things working. Then, if there is time at the end, refactor your code to adhere to best practices. When you encounter duplicated logic, extract it into a shared helper method.

Deliverables

Write the following methods in the classes in the files provided. Feel free to build out any helper methods if needed.

Initializers and Properties

Role

• Role __init__(self, character_name)
  • 'Role' is initialized with a character_name (string).
  • Character_name can be changed after the Role is initialized.
• Role property character_name()
  • Returns the Role's character_name.
  • Character_name's must be strings greater than 0 characters.
  • raise Exception if validation fails
• Role class attribute all
  • Returns a list of all roles.

Audition

• Audition __init__(self, role, actor, location, phone)
  • Audition is initialized with a Role instance, and a
  • actor (string)
  • location (string)
  • phone (string)
  • hired (boolean) which defaults to False
• Audition property actor()
  • Returns the actor for the Audition instance
  • Actor must be a string between 3 and 20 characters.
  • raise Exception if validation fails
• Audition class attribute all
  • Returns a list of all auditions

Object Relationship Attributes and Properties

Audition

• Audition role returns an instance of role associated with this audition
• Audition call_back() will change the the hired attribute to True

Roles

• Role auditions(self) returns all of the auditions associated with this role
• Role actors(self) returns an list of names from the actors associated with this role
• Role locations(self) returns an list of locations from the auditions associated with this role

Aggregate and Association Methods

Role

• Role lead(self) returns the first instance of the audition that was hired for this role or returns a string 'no actor has been hired for this role'

• Role understudy(self) returns the second instance of the audition that was hired for this role or returns a string 'no actor has been hired for understudy for this role'

• Role classmethod not_cast(cls) returns a list of all Role instances for which there are no hired actors yet.