Rewriting the Countdown Code
Here is a more efficient way to achieve the countdown from 5 to 0 in 5 seconds using a loop:
import time
for seconds in range(5, -1, -1):
print("Remaining time: " + str(seconds))
time.sleep(1)
Object Description for Cookie Factory Management
For managing production at a cookie factory, we can create a CookieBatch
object with the following attributes and methods:
Object Name: CookieBatch
Attributes:
batch_number
: An identifier for the batch of cookies.cookie_type
: The specific type of cookie being produced (e.g., chocolate chip, oatmeal).quantity
: The number of cookies being baked in the batch.
Methods:
start_baking()
: This method initiates the baking process, logging the start time and status of the batch.check_status()
: This method returns the current status of the batch (e.g., "Baking", "Finished") based on the baking time.
Analysis of the Given Program
The provided program is procedural in nature as it uses a sequence of actions defined in a linear fashion (i.e., declaring variables for songs and their info separately).
To convert this program to an object-oriented format, you could define a Song
class to encapsulate the attributes and behaviors related to a song. The Song
class could have attributes such as title
, bpm
, duration
, and methods to display song info or play the song.
Example Object-Oriented Structure:
class Song:
def __init__(self, title, bpm, duration):
self.title = title
self.bpm = bpm
self.duration = duration
def display_info(self):
return f"Title: {self.title}, BPM: {self.bpm}, Duration: {self.duration} seconds"
# Creating song instances
song1 = Song("Let's Dance", 128, 304)
song2 = Song("Party Time!", 144, 439)
song3 = Song("My Dreams", 93, 339)
# Displaying info for each song
print(song1.display_info())
print(song2.display_info())
print(song3.display_info())
Explanation of the Provided Class
The given class Meals
defines a simple object that represents a meal.
- The
__init__
method initializes the object with a name. - An instance of the class is created for
fish
with the name "salmon". - The
print(fish.name)
statement outputs the name of the meal, which in this case will be "salmon".
Writing a Python Module to Solve a Problem
Here is a simple Python module that solves the problem of calculating the average score of students in a class:
# student_scores.py
def calculate_average(scores):
"""Calculates the average of a list of scores."""
if not scores:
return 0
return sum(scores) / len(scores)
def add_score(scores, score):
"""Adds a new score to the list of scores."""
scores.append(score)
return scores
if __name__ == "__main__":
scores = []
while True:
try:
new_score = float(input("Enter the student's score (or type 'exit' to finish): "))
add_score(scores, new_score)
avg = calculate_average(scores)
print(f"Current scores: {scores}, Average score: {avg:.2f}")
except ValueError:
break
print("Final average score:", calculate_average(scores))
Explanation:
- The module includes two functions:
calculate_average
to compute the average of scores andadd_score
to add a new score to the list. - The
if __name__ == "__main__":
block allows you to run the module interactively by taking scores as input from the user until they type "exit". It calculates and displays the average score after each entry.