Compiled Practice Assignments

Table of Contents

1. Intro to Python & Control Flow
2. Loops & Logic
3. Functions & Lists
4. Dictionaries & Sets
5. Object-Oriented Programming (OOP)
6. Regular Expressions (Regex)
7. Functional Programming
8. APIs & HTTP Requests
9. SQL & Database Design
10. Flask & ORM (Intermediate/Advanced)
11. File I/O & Configuration
12. Decorators & Context Managers
13. AsyncIO & Generators
14. Frontend Development (HTML/CSS)
15. JavaScript Fundamentals
16. Web Interactivity & Frameworks

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1. Intro to Python & Control Flow

Solution: Python_Basics/Control_Flow_Solutions.py

Task 1.1: Greeting

• Goal: Write a script that asks for a user’s name and age, then prints a greeting message like: "Hello, [Name]! You are [Age] years old!"

Task 1.2: Century Age Calculator

• Goal: Calculate the year a person will turn 100.
• Logic: century_year = current_year + (100 - current_age)

Task 1.3: Simple Conditional

• Goal: Write an if-else statement.
• Prompt: Ask for user input (e.g., “Is it raining?”). If yes, print “Take an umbrella”. If no, print “Enjoy the sun”.

Task 1.4: Comparison Operators Practice

• Goal: Check voting eligibility.
• Logic: If age >= 18, print “Can vote”. Else, print “Cannot vote”.

Task 1.5: Complex Decisions (Grades)

• Goal: Convert numerical scores to letter grades.
• Logic:
  • 90-100: A
  • 80-89: B
  • 70-79: C
  • 60-69: D
  • < 60: F

Task 1.6: Exception Handling

• Goal: Write a program that asks for an integer (age).
• Requirement: Use try/except to handle cases where the user types text instead of a number.

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2. Loops & Logic

Solution: Python_Basics/Control_Flow_Solutions.py

Task 2.1: Basic While Loop

• Goal: Create a loop that counts from 1 to 5 and prints each number.

Task 2.2: Countdown

• Goal: Create a loop that counts down from 5 to 1, then prints “Blast Off!”.

Task 2.3: Password Checker

• Goal: Create a while loop that repeatedly asks the user for a password until they type “secret”.

Task 2.4: Temperature Monitor

• Goal: Create a script that accepts temperature readings from the user until they type ‘done’.
• Output: Print the count of readings, the total, the average, the minimum, and the maximum.

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3. Functions & Lists

Solution: Data_Structures/Lists_Dicts_Solutions.py

Task 3.1: Basic Functions

• Define: greet(name) -> prints “Hello [name]”
• Define: rectangle_area(length, width) -> returns area.
• Define: add(num1, num2) -> returns sum.

Task 3.2: Temperature Converter

• Define: celcius_to_farenheit(celcius) -> returns converted temp.

Task 3.3: List Statistics

• Goal: Write a function list_statistics(numbers) that takes a list of numbers and returns a dictionary containing:
  • max: Maximum value
  • min: Minimum value
  • avg: Average value
  • sum: Sum of values

Task 3.4: List Operations

• Create a list of fruits.
• Add “strawberry” to the end.
• Remove “orange” by value.
• Remove the item at index 1.
• Check if “apple” is in the list.

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4. Dictionaries & Sets

Solution: Data_Structures/Lists_Dicts_Solutions.py

Task 4.1: Student Scores

• Data: A dictionary of student names and scores.
• Subtasks:
  1. Loop through and print all names.
  2. Loop through and print all scores.
  3. Print “Name: Score” pairs.
  4. Use .get() to safely check for a missing student.

Task 4.2: Inventory System

• Structure: Nested dictionary (Categories -> Items -> Details).
• Subtasks:
  1. Access and print specific item prices.
  2. Update stock levels.
  3. Add new items and categories.
  4. Calculate the total value of inventory.

Task 4.3: Cleaning Usernames

• Goal: Write a function clean_usernames(raw_list) that takes a list of strings (some with whitespace/casing issues) and returns a clean list (lowercase, stripped).

Task 4.4: Set Operations

• Scenario: You have two lists of hobbies (e.g., wilson_hobbies and friend_hobbies).
• Subtasks:
  1. Find common interests (Intersection).
  2. Find all unique hobbies combined (Union).
  3. Find hobbies unique to one person (Difference).

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5. Object-Oriented Programming (OOP)

Solution: OOP/OOP_Solutions.py

Task 5.1: Student Class

• Attributes: name, age, grades (list).
• Methods:
  • add_grade(grade)
  • grade_avg(): Returns average.
  • info(): Prints student details.

Task 5.2: User Class (Encapsulation)

• Attributes: username (public), _password (protected/private).
• Methods:
  • set_password(new_pass): Validates length/characters before setting.
  • get_password(): Returns the password (or a masked version).

Task 5.3: RPG Battle System (Inheritance/Polymorphism)

• Base Class: Character (name, health, attack_power).
• Subclasses:
  • Warrior (High health, standard attack).
  • Mage (Lower health, high attack, special_attack method).
  • EvilWizard (Boss character, regenerate method).
• Goal: Simulate a battle loop where characters attack each other until one falls.

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6. Regular Expressions (Regex)

Solution: Regex/Regex_Solutions.py

Task 6.1: Basic Patterns

• Find the first word in a text (\w).
• Find a phone number (\d{3}-\d{4}).
• Find all 5-digit IDs (\d{5}).

Task 6.2: Data Cleaning

• Input: Raw customer feedback with varying spacing and sensitive data.
• Subtasks:
  1. Remove phone numbers (Replace with “[REDACTED]”).
  2. Fix multiple spaces (Replace \s+ with " ").

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7. Functional Programming

Solution: Functional/Functional_Solutions.py

Task 7.1: Sorting (Lambda)

• Input: List of product dictionaries ({'name': 'A', 'price': 10}).
• Goal: Sort by price (descending) using sorted() and a lambda key.

Task 7.2: Map

• Input: List of employee dictionaries.
• Goal: Use map() to create a new list where every employee gets a 7% raise.

Task 7.3: Filter

• Input: List of books ({'title': 'A', 'rating': 4.5}).
• Goal: Use filter() to find books with a rating >= 4.0.

Task 7.4: List Comprehensions

• Goal: Write a one-liner that takes a list of numbers, keeps only the evens, and doubles them.

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8. APIs & HTTP Requests

Solution: APIs/API_Solutions.py

Task 8.1: Basic Fetch

• Goal: Use requests to fetch a random dog image from https://dog.ceo/api/breeds/image/random and print the URL.

Task 8.2: PokeAPI Wrapper

• Goal: Write a function get_pokemon_data(name) that:
  1. Fetches data from https://pokeapi.co/api/v2/pokemon/{name}.
  2. Parses JSON to extract Name, ID, HP, and Type.
  3. Returns a dictionary (or None on error).

Task 8.3: Spotify Token (Auth)

• Goal: Implement the Client Credentials Flow to get a Spotify Access Token.
• Steps:
  1. Base64 encode client_id:client_secret.
  2. POST to https://accounts.spotify.com/api/token.
  3. Extract access_token from the response.

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9. SQL & Database Design

Solution: SQL/SQL_Solutions.sql

Task 9.1: DDL (Creating Tables)

• Write SQL to create a Students table (id, name, email) and a Courses table (id, title, instructor).

Task 9.2: Basic Queries

• Write SQL to select all students named “Alice”.
• Write SQL to update a course title.
• Write SQL to delete a specific record.

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10. Flask & ORM (Intermediate/Advanced)

Solution:

• Mechanic Shop Solution
• Inventory/Order Solution
• ORM Clinic Logic

Task 10.1: Mechanic Shop API

• Context: Mechanics, Customers, Tickets.
• Subtasks:
  1. Customer Search: Endpoint to find customer by email (GET /search?email=...).
  2. Analytics: Endpoint to find the mechanic with the most completed tickets.
  3. Pagination: Paginate the GET /tickets endpoint.

Task 10.2: Library/Inventory Logic

• Goal: Implement “Item Definition” vs “Item Instance” pattern.
• Endpoints:
  • POST /catalog: Create a generic book title.
  • POST /catalog/{id}/add: Add a physical copy of that book.

Task 10.3: Order Processing

• Goal: Implement a checkout flow.
• Flow: Create Order (Pending) -> Add Items -> Checkout (Complete).

Task 10.4: Pet Clinic Appointments

• Goal: Create a CLI or API function to schedule an appointment.
• Logic: Select Pet -> Select Vet -> Choose Date -> Commit to DB.

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11. File I/O & Configuration

Solution: Python_Basics/File_Ops_Solutions.py

Task 11.1: Log Analyzer

• Goal: Create a script that reads a “server.log” file line-by-line.
• Action: Count how many lines contain “ERROR”.
• Output: Write a summary report to “log_report.txt”.

Task 11.2: JSON Config Loader

• Goal: Write a function to manage application configuration.
• Subtasks:
  1. Load config.json (use defaults if missing).
  2. Update a specific setting (e.g., theme: "dark").
  3. Save the changes back to the file.

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12. Decorators & Context Managers

Solution: Advanced_Python/Decorators_Context_Solutions.py

Task 12.1: Execution Timer Decorator

• Goal: Create a @timer decorator.
• Behavior: When wrapping a function, it should print “Function [name] took [x] seconds” after execution.

Task 12.2: Custom Context Manager

• Goal: Create a class FileManager that behaves like the built-in open().
• Requirement: It must print “Opening file…” when entering the with block and “Closing file…” when exiting.

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13. AsyncIO & Generators

Solution: Advanced_Python/Async_Generators_Solutions.py

Task 13.1: Fibonacci Generator

• Goal: Write a generator function fib(limit) that yields Fibonacci numbers one by one up to a specified count, rather than returning a list.

Task 13.2: Async API Simulation

• Goal: Create an async function fetch_data(id) that waits for a random delay.
• Action: Use asyncio.gather to run three fetches concurrently and print the results when all are done.

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14. Frontend Development (HTML/CSS)

Solution: HTML_Profile_Solution.html, CSS_Card_Component_Solution.html, Flexbox_Navbar_Solution.html, Grid_Gallery_Solution.html

Resources: HTML Cheat Sheet, CSS Cheat Sheet, CSS Layout Guide

Task 14.1: Semantic HTML Profile

• Goal: Create a simple “About Me” page (index.html).
• Requirements:
  • Use semantic tags: <header>, <main>, <section>, <footer>.
  • Include a profile image (<img>), a bio paragraph (<p>), and a list of hobbies (<ul>).

Task 14.2: The “Card” Component

• Goal: Style a <div> to look like a UI card.
• CSS Requirements:
  • Add padding, border, and a slight box-shadow.
  • Ensure the image inside fits the card width (max-width: 100%).

Task 14.3: Flexbox Navbar

• Goal: Create a navigation bar.
• Structure: A container with a logo on the left and links on the right.
• CSS: Use display: flex and justify-content: space-between.

Task 14.4: CSS Grid Gallery

• Goal: Create a responsive photo gallery.
• CSS: Use display: grid, grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)), and gap.

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15. JavaScript Fundamentals

Solution: JavaScript_Basics_and_Functions_Solutions.js, JavaScript_Array_Manipulation_Solutions.js, JavaScript_Object_Access_Solutions.js

Resources: JS Basics Cheat Sheet, JS Functions Guide

Task 15.1: Hello World & Variables

• Goal: Create a script (script.js) that logs “Hello, World!” to the console.
• Subtasks:
  1. Declare a variable name using let and assign it your name.
  2. Use a template literal to log “Hello, [name]!”.
  3. Run it using node script.js (if Node is installed) or attach it to an HTML file.

Task 15.2: Simple Calculator

• Goal: Write a function calculate(num1, num2, operation).
• Logic:
  • If operation is “+”, return sum.
  • If “-“, return difference.
  • Use a switch statement.
  • Bonus: Convert it to an arrow function.

Task 15.3: Array Manipulation

• Goal: Practice array methods.
• Data: let numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
• Subtasks:
  1. Filter out odd numbers (keep only evens).
  2. Map the remaining numbers to their squares.
  3. Log the final array.

Task 15.4: Object Access

• Goal: Working with Objects.
• Data:

  const car = {
      make: "Toyota",
      model: "Corolla",
      year: 2020,
      features: ["AC", "Radio", "Bluetooth"]
  };
  

• Action:
  1. Log the make and model combined.
  2. Loop through features and log each one.
  3. Add a new property mileage with value 50000.

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16. Web Interactivity & Frameworks

Resources: Bootstrap Cheat Sheet, DOM Manipulation Guide, CSS Cheat Sheet

Task 16.1: Bootstrap Grid & Layout

• Goal: Create a responsive landing page using Bootstrap.
• Requirements:
  1. Include the Bootstrap CDN in your <head>.
  2. Create a navbar.
  3. Create a hero section with a centered h1 and button.
  4. Create a 3-column feature section using .row and .col-md-4.

Task 16.2: Color Picker (DOM Events)

• Goal: Build an interactive color switcher.
• UI: A set of divs with different colors and a large “Canvas” div.
• Logic:
  1. Select all color swatches using document.querySelectorAll.
  2. Loop through them and add a click event listener.
  3. When clicked, change the background color of the “Canvas” to match the clicked swatch.

Task 16.3: Local Storage Form

• Goal: Persist user data across page reloads.
• UI: A form with “Username” and “Theme Preference” (Light/Dark).
• Logic:
  1. Listen for the submit event.
  2. Save the values to localStorage (e.g., localStorage.setItem('user', ...)).
  3. On page load (DOMContentLoaded), check localStorage. If data exists, pre-fill the form.

Task 16.4: Advanced CSS Pseudo-Elements

• Goal: Style a button with a “shine” effect or an underline animation.
• CSS:
  1. Use ::before or ::after to create a decorative element.
  2. Use :hover to trigger a transform or transition.
  3. Try styling ::first-letter of a paragraph to look like a drop cap.