How can I debug thread exceptions in Python?

How can I debug thread exceptions in Python?

Debugging thread exceptions in Python can be tricky. You can use the threading module's settrace method to set a trace function that will be called for every line of code executed in the thread.

Can you show me an example of how to implement that?

Sure! Here's a simple example:

import threading

def trace_calls(frame, event, arg):
    if event == 'call':
        print(f'Calling {frame.f_code.co_name}')
    return trace_calls

threading.settrace(trace_calls)

def worker():
    print('Worker thread is running')
    raise Exception('An error occurred!')

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

What if I want to log the exceptions instead of just printing them?

You can modify the trace_calls function to log exceptions. Use a try-except block around your thread's code to catch exceptions and log them accordingly.