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10 Best Python Code for 8th grade students - Science Education and Tutorials

# 10 Best Python Code for 8th grade students

Python code that 8th grade students might find engaging and challenging:

Python is a versatile and powerful programming language that is widely used in various fields such as web development, data science, artificial intelligence, and more. It is known for its simple and easy-to-learn syntax, making it a great choice for 8th grade students who are interested in learning how to code.

8th grade students can start by learning the basics of Python, such as variables, data types, and control structures. They can then move on to more advanced concepts such as functions, classes, and modules. They can also learn how to use popular libraries and frameworks like NumPy, Pandas, and Pygame to perform different tasks.

One example of a simple Python code that 8th grade students can learn is a program that calculates the area of a circle. The program takes the radius of the circle as input and uses the formula (pi * r^2) to calculate the area.

`Copy code`import math radius = float(input("Enter the radius of the circle: ")) area = math.pi * (radius ** 2) print("The area of the circle is: ", area)``

Another example is a program that generates a random number between 1 and 10 and asks the user to guess the number. The program keeps track of the number of attempts made and gives a message if the user guesses the correct number.

`Copy code`import random number = random.randint(1, 10) attempts = 0 while True: guess = int(input("Guess the number between 1 and 10: ")) attempts += 1 if guess == number:print("Congratulations! You guessed the number in", attempts, "attempts.") break elifguess < number: print("The number is higher.") else: print("The number is lower.")``

By learning Python, 8th grade students can develop their problem-solving and critical thinking skills and gain a deeper understanding of how computers and technology work. They can also use Python to create interactive programs and games, analyze data, and perform other tasks that can be applied in various fields

## Creating a simple game:

`Copy code`import random print("Welcome to the guessing game!") answer = random.randint(1, 100) guess = None while guess != answer: guess = int(input("Guess a number between 1 and 100: ")) if guess < answer: print("Too low, try again.") elif guess > answer: print("Too high, try again.") else: print("Congratulations, you guessed the right number!")``

This code creates a simple guessing game where the computer generates a random number between 1 and 100 and the player has to guess the number. The player inputs their guess and the code checks if it is too high or too low, and continues to prompt the player for a guess until they correctly guess the number.

## Creating a simple calculator:

`Copy code`def add(x, y): return x + y def subtract(x, y): return x - y def multiply(x, y): return x * y def divide(x, y): return x / y print("Select operation.") print("1.Add")print("2.Subtract") print("3.Multiply") print("4.Divide") choice = input("Enter choice(1/2/3/4): ") num1 = int(input("Enter first number: ")) num2 = int(input("Enter second number: ")) if choice == '1': print(num1,"+",num2,"=", add(num1,num2)) elif choice == '2': print(num1,"-",num2,"=", subtract(num1,num2)) elif choice == '3':print(num1,"*",num2,"=", multiply(num1,num2)) elif choice == '4':print(num1,"/",num2,"=", divide(num1,num2)) else: print("Invalid Input")``

This code creates a simple calculator that allows the user to perform basic mathematical operations such as addition, subtraction, multiplication, and division. The user is prompted to select an operation and enter two numbers, and the code uses the appropriate function to perform the operation and display the result.

## Creating a simple data visualization:

`Copy code`import matplotlib.pyplot as plt x = [1, 2, 3, 4, 5] y = [2, 4, 6, 8, 10] plt.plot(x, y) plt.xlabel('X-axis') plt.ylabel('Y-axis') plt.title('Line Plot') plt.show()``

This code creates a simple line plot using the `matplotlib` library. It creates two lists.

1. Creating a simple text-based adventure game:
`Copy code`print("Welcome to the adventure game!") inventory = [] def start(): print("You find yourself in a dark forest.") print("What would you like to do? (explore/stay put)") choice = input("> ") if choice == "explore": explore() elif choice == "stay put": stay_put() else: print("Invalid choice.") start() def explore(): print("As you explore the forest, you come across a stream.") print("What would you like to do? (follow stream/go back)") choice = input("> ") if choice == "follow stream": follow_stream() elifchoice == "go back": start() else: print("Invalid choice.") explore() deffollow_stream(): print("You follow the stream and find a small cave.") print("What would you like to do? (enter cave/go back)") choice = input("> ") if choice == "enter cave": enter_cave() elif choice == "go back": explore() else: print("Invalid choice.") follow_stream() def enter_cave(): print("Inside the cave, you find a treasure chest.")print("What would you like to do? (open chest/go back)") choice = input("> ") if choice == "open chest": open_chest() elif choice == "go back": follow_stream() else:print("Invalid choice.") enter_cave() def open_chest(): print("You open the chest and find a golden ring.") inventory.append("golden ring") print("Golden ring has been added to your inventory.") follow_stream() start()``

This code creates a simple text-based adventure game where the player has to make choices to navigate through the game. The player starts in a dark forest and can choose to explore or stay put. Based on their choices, the player will encounter different scenarios and have to make more choices. The player can also find a treasure and add it to their inventory.

## Creating a simple encryption/decryption program:

`Copy code`import string def encrypt(plaintext, key): ciphertext = "" for char in plaintext: if char in string.ascii_letters: shift = ord(char) + key if char.isupper(): if shift > ord('Z'): shift -= 26 elif shift < ord('A'): shift += 26 elif char.islower(): if shift > ord('z'): shift -= 26 elif shift < ord('a'): shift += 26 ciphertext += chr(shift) else: ciphertext += char return ciphertext def decrypt(ciphertext, key): plaintext = "" for char inciphertext: if char in string.ascii_letters: shift = ord(char) - key if char.isupper():if shift > ord('Z'): shift -= 26 elif shift < ord('A'): shift += 26 elif char.islower():if shift > ord('z'): shift -= 26 elif shift < ord('a'): shift += 26 plaintext += chr(shift) else: plaintext += char return plaintext text = "Hello World!" key = 4ciphertext = encrypt(text, key) print("Encrypted text: " + ciphertext) plaintext = decrypt(ciphertext, key) print("Decrypted text: " + plaintext)``

This code creates a simple encryption/decryption program that uses the Caesar Cipher method. The program takes plaintext and a key as input, and uses the key to shift the letters of the plaintext by a certain number of positions to create the ciphertext. To decrypt the ciphertext, the program takes the ciphertext and the same key as input and shifts the letters back by the same number of positions to create the plaintext. It will be good for students to learn about different encryption techniques and understand the importance of encryption in maintaining the security of data.

## Creating a simple weather app:

`Copy code`import requests # OpenWeatherMap API key api_key = "your_api_key_here" # City name city = "New York" # Get weather data from OpenWeatherMap url = f"http://api.openweathermap.org/data/2.5/weather?q={city}&appid={api_key}" response = requests.get(url) data = response.json() # Extract temperature and weather condition temp = data["main"]["temp"] condition = data["weather"]["main"] # Print the temperature and weather condition print(f"The temperature in {city} is {temp} F and the weather is {condition}.")``

This code creates a simple weather app that uses the OpenWeatherMap API to get the current temperature and weather condition of a specified city. It uses the `requests` library to send an HTTP request to the API and the `json` method to parse the response. The app then extracts the temperature and weather condition from the response and prints them out.

## Creating a simple to-do list:

`Copy code`# Initialize an empty list for the to-do items todo_list = [] # Function to add an item to the to-do list def add_item(item): todo_list.append(item) print(f"{item} has been added to the to-do list.") # Function to remove an item from the to-do list defremove_item(item): todo_list.remove(item) print(f"{item} has been removed from the to-do list.") # Function to display the to-do list def display_list(): print("To-do list:") foritem in todo_list: print(item) # Add some items to the to-do list add_item("Buy milk") add_item("Finish homework") add_item("Go for a run") # Display the to-do listdisplay_list() # Remove an item from the to-do list remove_item("Buy milk") # Display the updated to-do list display_list()``

This code creates a simple to-do list program that uses a list to store the to-do items. The program has three functions: `add_item

## Creating a simple chatbot:

`Copy code`import re bot_template = "BOT : {0}" user_template = "USER : {0}" responses = { "hi": "hello", "bye": "goodbye", "thank you": "you're welcome" } def respond(message): match = None for key, value in responses.items(): match = re.search(key, message) if match:return value return "I'm sorry, I don't understand." print(user_template.format("hi")) response = respond("hi") print(bot_template.format(response))print(user_template.format("bye")) response = respond("bye")print(bot_template.format(response)) print(user_template.format("thank you")) response = respond("thank you") print(bot_template.format(response))``

This code creates a simple chatbot that responds to certain messages by matching them with predefined keywords. The chatbot uses a dictionary to store the keywords and their corresponding responses. The `respond` function takes in a message and uses the `re` library to search for a match in the dictionary. If a match is found, the corresponding response is returned, otherwise, a default message is returned.

## Creating a simple alarm clock:

`Copy code`import time import datetime import pygame alarm_time = "09:00" while True: current_time = datetime.datetime.now().strftime("%H:%M") if current_time == alarm_time: pygame.mixer.init() pygame.mixer.music.load("alarm.mp3") pygame.mixer.music.play() whilepygame.mixer.music.get_busy(): pygame.time.Clock().tick(10) time.sleep(60)``

This code creates a simple alarm clock that plays an alarm sound at a specified time. The alarm time is set in the variable `alarm_time`. The code uses a while loop that runs indefinitely, and in each iteration, it checks the current time using the `datetime` library. If the current time matches the alarm time, it uses the `pygame` library to play an alarm sound file (MP3 format) using the `mixer.music` module. The code uses the `time.sleep(60)` function to pause the execution for 60 seconds before checking the time again.

## Creating a simple game of Tic-tac-toe:

`Copy code`board = [" " for x in range(9)] def print_board(): row1 = "| {} | {} | {} |".format(board, board, board) row2 = "| {} | {} | {} |".format(board, board, board) row3 = "| {} | {} | {} |".format(board, board, board)print() print(row1) print(row2) print(row3) print() def player_move(icon): if icon == "X": number = 1 elif icon == "O": number = 2 print("Your turn player {}".format(number)) choice = int(input("Enter your move (1-9): ").strip()) if board[choice - 1] == " ": board[choice - 1] = icon else: print() print("That space is taken!") defis_victory(icon): if (board == icon and board == icon and board == icon) or \ (board == icon and board == icon and board == icon) or \ (board == icon andboard == icon and board == icon) or \ (board == icon and board == icon andboard == icon) or \ (board == icon and board == icon and board == icon) or \ (board == icon and board == icon and board == icon) or \ (board == icon andboard == icon and board == icon) or \ (board == icon and board == icon andboard == icon): return True else: return False def is_draw(): if " " not in board:return True else: return False while True: print_board() player_move("X") print_board()if is_victory("X"): print("X wins! Congratulations!") break elif is_draw(): print("It's a draw!") break player_move("O") if is_victory("O"): print_board() print("O wins! Congratulations!") break elif is_draw(): print("It's a draw!") break``

This code creates a simple game of Tic-tac-toe, where two players take turns to place their X or O on the 3×3 board. The board is represented by a list with 9 elements, where an empty element represents an empty space, “X” represents an X, and “O” represents an O. The code defines several functions to print the board, take player moves, check for victory, and check for a draw.

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