Passing Objects via Dependency Injection

Medium Composition & Aggregation

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Problem Statement

Create a `Database` class with a `db_name` attribute. Create a `Server` class whose `__init__` requires a `Database` object passed into it. Print ‘Server connected to [db_name]’.

Input Format

A single string for the database name.

Output Format

Print the connection message.

Constraints

None

Sample Input

PostgreSQL

Sample Output

Server connected to PostgreSQL

Explanation

Dependency Injection is a common form of aggregation where a class receives its dependencies from the outside rather than creating them internally.

Starter Code

class Database:
    pass

class Server:
    pass

if __name__ == '__main__':
    db_n = input().strip()
    # Inject Database into Server
    pass

Limits

Time Limit: 1s
Memory Limit: 256MB

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