Question

python

Imagine that you are creating a program that an online streaming service will use to manage its inventory of shows. Describe at least two classes that you would create and several subclasses. user

Answer 1

To manage an online streaming service's inventory of shows, we can define a base class representing a general media item and then create subclasses for specific types of shows. Here’s a simple design with two primary classes and some subclasses:

### Class Structure

1. **MediaItem (Base Class)**
- This class represents a general media item. It contains attributes and methods that are common to all types of shows/movies.

```python
class MediaItem:
def __init__(self, title, release_year, genre, duration):
self.title = title
self.release_year = release_year
self.genre = genre
self.duration = duration # in minutes
self.is_available = True

def mark_as_unavailable(self):
self.is_available = False

def mark_as_available(self):
self.is_available = True

def get_info(self):
return f"{self.title} ({self.release_year}) - Genre: {self.genre}, Duration: {self.duration} min"
```

2. **Show (Subclass of MediaItem)**
- Represents a general television show. This class may include season and episode details.

```python
class Show(MediaItem):
def __init__(self, title, release_year, genre, duration, seasons):
super().__init__(title, release_year, genre, duration)
self.seasons = seasons # A list of Season objects

def get_show_info(self):
return f"{self.get_info()}, Seasons: {len(self.seasons)}"
```

- **Subclasses:**
- **Series (Subclass of Show)**
- Represents a continuous storyline show with multiple episodes per season.
```python
class Series(Show):
def __init__(self, title, release_year, genre, duration, seasons, episodes_per_season):
super().__init__(title, release_year, genre, duration, seasons)
self.episodes_per_season = episodes_per_season # Dictionary with season numbers and episodes

def get_series_info(self):
return f"{self.get_show_info()}, Episodes per season: {self.episodes_per_season}"
```

- **Miniseries (Subclass of Show)**
- Represents a limited series that usually has fewer episodes and a defined number of seasons.
```python
class Miniseries(Show):
def __init__(self, title, release_year, genre, duration, seasons, total_episodes):
super().__init__(title, release_year, genre, duration, seasons)
self.total_episodes = total_episodes # Total number of episodes in the miniseries

def get_miniseries_info(self):
return f"{self.get_show_info()}, Total episodes: {self.total_episodes}"
```

3. **Movie (Subclass of MediaItem)**
- Represents a standalone movie. This class has no seasons or episodes, just the movie attributes.

```python
class Movie(MediaItem):
def __init__(self, title, release_year, genre, duration, director):
super().__init__(title, release_year, genre, duration)
self.director = director # Director of the movie

def get_movie_info(self):
return f"{self.get_info()}, Directed by: {self.director}"
```

### Summary
This structure allows for a clear hierarchy where both shows and movies share common attributes and methods, yet they also have specific details relevant to their types. The design is flexible enough to extend further if needed, such as adding more specific types of shows or additional features like reviews, ratings, or cast information.

Here is how you might create instances of each class:

```python
# Creating an instance of a Movie
movie1 = Movie("Inception", 2010, "Sci-Fi", 148, "Christopher Nolan")

# Creating an instance of a Series
series1 = Series("Breaking Bad", 2008, "Crime", 49, ["Season 1", "Season 2", "Season 3"], {1: 7, 2: 13, 3: 13})

# Creating an instance of a Miniseries
miniseries1 = Miniseries("Chernobyl", 2019, "Drama", 60, ["Season 1"], 5)

print(movie1.get_movie_info())
print(series1.get_series_info())
print(miniseries1.get_miniseries_info())
```

This design can be expanded with further functionalities such as adding reviews, ratings, or more complex inventory management features depending on the requirements of the streaming service.