Use Traceback to track exceptions in Python

test1.py, when the denominator is 0, the calling system exits

#!/usr/bin/pythonimport Sysdef Division (a=1, b=1):    if b==0:         print ' b eq 0 '         sys.exit (1)    else:         Return A/b

test2.py, use try: Except catches the exception, and then Traceback.print_exc () prints.

#!/usr/bin/pythonimport sysimport tracebackimport test1  a=10b=0 try:    print test1.division (A, B) except:    print ' invoking division failed. '    Traceback.print_exc ()    sys.exit (1)

Run test2.py failed to throw an exception.

$python test2.py
Execution Python-2.5.1/python (enodeb/linux)
b eq 0
Invoking division failed.
Traceback (most recent):
File "test2.py", line ten, in <module>
Test1.division (A, B)
File "/home/fesu/test1.py", line 6, in Division
Sys.exit (1)
Systemexit:1

Use Traceback to track exceptions in Python