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Learn how to handle exceptions in Python by sending detailed error messages via HTML emails when your code fails.
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How to Fetch Exception Messages and Send HTML Emails in Python

Handling errors in your code is crucial for providing a smooth user experience and effective debugging. What if you encounter an exception in your Python program and want to send a detailed HTML email containing the exception details? This guide will walk you through how to achieve that by passing exception messages between different Python files.

The Problem

Imagine you have two Python files, test_file1.py and test_file2.py. When an error occurs in test_file1.py, you want to fetch the exception message and send it as an HTML email using the functionality in test_file2.py. In brief, your goal is to notify someone via email whenever an error happens, making it easy to debug issues on the go.

Solution Overview

Step 1: Create the Email Sending Function in test_file2.py

First, we define a function named send_error_email that will handle sending the email. This function will take the exception details and the error message as parameters. Below is how you can structure test_file2.py:

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Step 2: Handle Exceptions in test_file1.py

Next, you need to modify test_file1.py to catch exceptions and send them to test_file2.py. Here’s how to do that:

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Step 3: Enhanced Detail with Traceback

If you want to include more details about the exception, you can use the traceback module. Here’s an extended version of test_file1.py that captures detailed error information:

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Formatting Options

If you prefer older style string formatting using .format(), you can replace the f-strings in the HTML definition of test_file2.py like below:

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Conclusion

By implementing the above steps, you can effectively send HTML emails containing detailed exception information from your Python scripts. This not only aids in debugging processes but also helps notify the necessary stakeholders immediately when things go wrong. Happy coding!