OS types (batch, time-sharing, real-time, distributed) in Operating Systems - Mini Project: Build & Apply

Understanding OS Types: Batch, Time-Sharing, Real-Time, and Distributed

📖 Scenario: You are learning about different types of operating systems used in computers and devices. Each type has its own way of managing tasks and users.

🎯 Goal: Build a simple data structure that lists four types of operating systems with a short description for each. Then, add a filter to select OS types based on a keyword. Finally, create a summary list of OS types that match the filter.

📋 What You'll Learn

Create a dictionary named os_types with keys as OS type names and values as their descriptions.

Create a variable named filter_keyword to hold a word to filter OS types.

Use a dictionary comprehension to create a new dictionary filtered_os containing only OS types whose descriptions include the filter_keyword.

Create a list named filtered_os_names containing only the names of the filtered OS types.

💡 Why This Matters

🌍 Real World

Understanding different operating system types helps in choosing the right OS for specific tasks like managing multiple users, handling real-time data, or coordinating multiple computers.

💼 Career

Knowledge of OS types is important for IT professionals, system administrators, and software developers to optimize system performance and resource management.

1

Create the OS types dictionary

Create a dictionary called os_types with these exact entries: 'Batch' with description 'Processes batches of jobs without user interaction', 'Time-Sharing' with description 'Allows multiple users to share system resources simultaneously', 'Real-Time' with description 'Processes data and events within strict time constraints', and 'Distributed' with description 'Manages a group of independent computers as a single system'.

Operating Systems

# Create the os_types dictionary with the given OS types and descriptions
# Your code here

Need a hint?

Use curly braces {} to create the dictionary and separate each key-value pair with a comma.

2

Add a filter keyword

Create a variable called filter_keyword and set it to the string 'time' to filter OS types whose descriptions contain this word.

Operating Systems

os_types = {
    'Batch': 'Processes batches of jobs without user interaction',
    'Time-Sharing': 'Allows multiple users to share system resources simultaneously',
    'Real-Time': 'Processes data and events within strict time constraints',
    'Distributed': 'Manages a group of independent computers as a single system'
}
# Create the filter_keyword variable with the value 'time'
# Your code here

Need a hint?

Assign the string 'time' to the variable filter_keyword.

3

Filter OS types by keyword

Use a dictionary comprehension to create a new dictionary called filtered_os that includes only the OS types from os_types whose descriptions contain the filter_keyword. Use filter_keyword.lower() and description.lower() to make the search case-insensitive.

Operating Systems

os_types = {
    'Batch': 'Processes batches of jobs without user interaction',
    'Time-Sharing': 'Allows multiple users to share system resources simultaneously',
    'Real-Time': 'Processes data and events within strict time constraints',
    'Distributed': 'Manages a group of independent computers as a single system'
}
filter_keyword = 'time'
# Create filtered_os dictionary using dictionary comprehension to filter by filter_keyword
# Your code here

Need a hint?

Use a dictionary comprehension with for os, desc in os_types.items() and check if filter_keyword.lower() is in desc.lower().

4

Create a list of filtered OS names

Create a list called filtered_os_names that contains only the keys (OS type names) from the filtered_os dictionary.

Operating Systems

os_types = {
    'Batch': 'Processes batches of jobs without user interaction',
    'Time-Sharing': 'Allows multiple users to share system resources simultaneously',
    'Real-Time': 'Processes data and events within strict time constraints',
    'Distributed': 'Manages a group of independent computers as a single system'
}
filter_keyword = 'time'
filtered_os = {os: desc for os, desc in os_types.items() if filter_keyword.lower() in desc.lower()}
# Create filtered_os_names list containing only the OS names from filtered_os
# Your code here

Need a hint?

Use list() and filtered_os.keys() to get the list of OS names.