python中的excepthook

Python中,可以通过sys.excepthook来实现对Python程序中的exception的自定义处理

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import sys
import traceback

def exception_printer(exc_type, exc_obj, traceback_obj):
print("exception type: %s" % type(exc_type))
print("exception object: %r" % exc_obj)
print("traceback content:\n%s" % '\n'.join(traceback.format_tb(traceback_obj)))

def test():
sys.excepthook = exception_printer
raise StandardError('test')

if __name__ == '__main__':
test()

输出结果:

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exception type: <type 'exceptions.StandardError'>
exception object: StandardError('test',)
traceback content:
File "C:\Users\richard\Desktop\test.py", line 14, in <module>
test()

File "C:\Users\richard\Desktop\test.py", line 11, in test
raise StandardError('test')

参考链接: https://docs.python.org/2/library/sys.html