Module 19 — Python Projects

Putting everything together — from a number-guessing game to a full CRUD application.

Prerequisite: Module 18 — GUI Programming with Tkinter

Concept & Syntax

Reading about Python and building with Python are different skills — projects are where lessons turn into ability. This module walks through one complete project in detail, then points you to the full Project Dashboard, which lists beginner, intermediate, and advanced projects along with a large capstone that combines nearly everything in this course.

# A good project always starts with a plain-language plan:
# 1. What does it do?
# 2. What information does it need?
# 3. What are the steps, in order?
# 4. What could go wrong, and how should it be handled?

Examples

Walkthrough: Number Guessing Game — plan Very Easy

# Objective: the computer picks a secret number 1-100; the player guesses
# until they get it right, with "higher/lower" hints after each guess.
#
# Requirements:
# - Generate a random number
# - Accept repeated guesses
# - Give feedback after each guess
# - Count and report the number of attempts

Writing the plan in plain English before writing code is a habit worth building early — it turns a vague idea into a concrete checklist.

Walkthrough: Number Guessing Game — full code Real World

import random
 
secret = random.randint(1, 100)
attempts = 0
 
while True:
    guess = int(input("Guess a number (1-100): "))
    attempts += 1
    if guess < secret:
        print("Higher!")
    elif guess > secret:
        print("Lower!")
    else:
        print(f"Correct! It took you {attempts} attempts.")
        break

This combines a while loop, if/elif/else, input()/int(), and the random module — every one of them covered earlier in this course.

Extending the project Challenge

# Ideas to extend the game further, using concepts from this course:
# - Limit the player to 7 attempts (control flow)
# - Track high scores across games in a list (lists)
# - Save scores to a file between runs (file I/O)
# - Wrap it in a class called GuessingGame (OOP)
# - Build a Tkinter version with an Entry box (GUI)

Real growth comes from extending a finished project, not just finishing it once — each idea above maps directly to an earlier module.

Visual Explanation

Common Mistakes

# Writing the entire guessing game, GUI, file-saving, and
# high-score tracking all at once, then running it for the first time.

# Get the core loop working and tested first.
# Then add ONE feature, test again, then add the next.

Exercise & Challenge

import random
 
secret = random.randint(1, 100)
attempts = 0
max_attempts = 7
 
while attempts < max_attempts:
    guess = int(input("Guess a number (1-100): "))
    attempts += 1
    if guess < secret:
        print("Higher!")
    elif guess > secret:
        print("Lower!")
    else:
        print(f"Correct! It took you {attempts} attempts.")
        break
else:
    print(f"Out of attempts! The number was {secret}.")

Quiz

Answer every question, then submit to see your score and explanations.

Summary

• Every project benefits from a short written plan before any code is written.
• Build the simplest working version first, test it, then add features one at a time.
• The number-guessing game combines loops, conditionals, and input handling from earlier modules.
• The full Project Dashboard has beginner, intermediate, and advanced projects, plus a capstone.

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