Build an Email Simulator - Step 31

Python
1

Tell us what’s happening:

I am confused by the instructions and the hint… not understanding how to use the str method. "Inside the loop, you should print each email summary with a numbered prefix followed by the formatted string from the str method. "

Your code so far

class Email:
    def __init__(self, sender, receiver, subject, body):
        self.sender = sender
        self.receiver = receiver
        self.subject = subject
        self.body = body
        self.read = False

    def mark_as_read(self):
        self.read = True

    def display_full_email(self):
        self.mark_as_read()
        print('\n--- Email ---')
        print(f'From: {self.sender.name}')
        print(f'To: {self.receiver.name}')
        print(f'Subject: {self.subject}')
        print(f'Body: {self.body}')
        print('------------\n')

    def __str__(self):
        status = 'Read' if self.read else 'Unread'
        return f"[{status}] From: {self.sender.name} | Subject: {self.subject}"
class User:
    def __init__(self, name):
        self.name = name
        self.inbox = Inbox()

    def send_email(self, receiver, subject, body):
        email = Email(sender=self, receiver=receiver, subject=subject, body=body)
        receiver.inbox.receive_email(email)

class Inbox:
    def __init__(self):
        self.emails = []

    def receive_email(self, email):
        self.emails.append(email)


# User Editable Region

    def list_emails(self):
        if not self.emails:
            print('Your inbox is empty.\n')
            return
        print('\nYour Emails:')
        for i, email in enumerate(self.emails, start=1):
            print(f'{i}. {email.__str__()}') #this is my problem line
            #print(f'{i}. {email}')  #email from line 30

            return
        

# User Editable Region

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Challenge Information:

Build an Email Simulator - Step 31

2

think if you really need to sue __str__ explicitly

the dunder methods define the behaviour of the class in certain situations, the __str__ method define the behaviour when it’s converted to a string, but do you ever need to use it explicitly?

3

It was the unnecessary '“return” that initially caused it to fail the tests :frowning:

4

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