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Custom exception class for handling errors that occur during email sending operations.

Purpose

EmailError is a specialized exception class that inherits from Python's built-in Exception class. It is designed to be raised when errors occur during email sending operations, providing a specific exception type that can be caught and handled separately from other exceptions. This allows for more granular error handling in email-related functionality, making it easier to distinguish email-specific failures from other types of errors in the application.

Source Code

class EmailError(Exception):
    """Exception raised for errors during email sending."""
    pass

Parameters

Parameter Details

args: Variable length argument list passed to the parent Exception class. Typically contains the error message string describing what went wrong during email sending, but can include additional context information.

kwargs: Variable length keyword argument dictionary passed to the parent Exception class. Rarely used but available for extended exception information.

Return Value

Instantiation returns an EmailError exception object that can be raised and caught. When raised, it behaves like any Python exception, propagating up the call stack until caught by an appropriate except block. The exception object contains the message and any additional arguments passed during instantiation.

Class Interface

Methods

Attributes

Required Imports

from module_name import EmailError

Usage Example

# Raising the exception
try:
    # Attempt to send email
    if not smtp_connection:
        raise EmailError('SMTP connection failed')
    # or with more context
    raise EmailError('Failed to send email to user@example.com', 'Connection timeout')
except EmailError as e:
    print(f'Email error occurred: {e}')
    # Handle email-specific error
    log_email_failure(str(e))

# Using in a function
def send_notification(recipient):
    if not validate_email(recipient):
        raise EmailError(f'Invalid email address: {recipient}')
    # proceed with sending

Best Practices

• Use EmailError specifically for email-related failures to distinguish them from other exceptions in your application
• Provide descriptive error messages when raising EmailError to aid in debugging and logging
• Catch EmailError separately from generic Exception to implement email-specific error handling logic
• Consider including relevant context in the error message such as recipient address, email type, or failure reason
• Use this exception in conjunction with proper logging to track email delivery issues
• Can be used in try-except blocks around SMTP operations, email validation, or email template rendering
• Since it's a simple pass-through exception, all functionality comes from the base Exception class

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