Mastering Exception Handling in Python’s Threads and Processes

A Practical Guide to Robust and Reliable Concurrent Programming

Max N
3 min readMar 27, 2024
Photo by QArea Inc. on Unsplash

In the world of concurrent programming, exceptions can be a real headache. When dealing with threads and processes, it’s crucial to handle exceptions properly to ensure your application’s stability and reliability.

In this article, we’ll dive into the intricacies of exception handling in Python’s threads and processes, providing you with practical examples and best practices.

Understanding Exceptions in Threads

Threads are lightweight, concurrent execution units within a single process. When an exception occurs in a thread, it’s essential to handle it correctly to prevent the entire application from crashing. Here’s an example of how to catch and handle exceptions in a thread:

import threading
import time

def worker():
try:
# Some code that might raise an exception
raise ValueError("Oops, something went wrong!")
except Exception as e:
print(f"Exception caught in thread: {e}")

thread = threading.Thread(target=worker)
thread.start()
thread.join()

In this example, we create a worker function that intentionally raises a ValueError. The try/except block…

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Max N

A writer that writes about JavaScript and Python to beginners. If you find my articles helpful, feel free to follow.