Re-raising exceptions:

try:    some_operation()except SomeError, e:    if is_fatal(e):        raise    handle_nonfatal(e)

The 'raise' statement with no arguments inside an error handler tells Python to re-raise the exceptionwith the original traceback intact, allowing you to say "oh, sorry, sorry, I didn't mean to catch that, sorry, sorry."

If you wish to print, store or fiddle with the original traceback, you can get it with sys.exc_info(), and printing it like Python would is done with the 'traceback' module.

Re-raising exceptions:

# Python 2 syntaxtry:    some_operation()except SomeError, e:    if is_fatal(e):        raise    handle_nonfatal(e)# Python 3 syntaxtry:    some_operation()except SomeError as e:    if is_fatal(e):        raise    handle_nonfatal(e)

The 'raise' statement with no arguments inside an error handler tells Python to re-raise the exceptionwith the original traceback intact, allowing you to say "oh, sorry, sorry, I didn't mean to catch that, sorry, sorry."

If you wish to print, store or fiddle with the original traceback, you can get it with sys.exc_info(), and printing it like Python would is done with the 'traceback' module.