我正在设置 sys.excepthook ,以便我可以记录发生的每个异常。我们不是写日志,而是使用以下示例:
def excepthook(self, type_, value, traceback):
print "\n"
print type_
print value
print traceback
print "\n"
sys.excepthook = self.excepthook
现在假设我创建了一个类型错误,如下所示:
print 3 + str(2)
没有被捕获,这进入了异常情况并正确打印出3个变量:
<type 'exceptions.TypeError'>
unsupported operand type(s) for +
<traceback object at 0x02BAE800>
我想做的是,它还打印出发送到excepthook的完整异常(因此,在这种情况下,是一个TypeException)。换句话说,我希望它还显示以下信息。)
Traceback (most recent call last):
File "testcidnelite.py", line 13, in <module>
print 3 + str(2)
TypeError: unsupported operand type(s) for +: 'int' and 'str'
如果我添加以下行:
raise
它会正确显示异常;但是,它也会在术语raise:
中显示错误Error in sys.excepthook:
Traceback (most recent call last):
File "C:\psi-test-automation\Selenium\TestMethods2.py", line 145, in excepthook
raise
TypeError: exceptions must be old-style classes or derived from BaseException, not NoneType
将其改为:
raise type_
将打印出以下错误:
Error in sys.excepthook:
Traceback (most recent call last):
File "C:\psi-test-automation\Selenium\TestMethods2.py", line 145, in excepthook
raise type_
TypeError
Original exception was:
Traceback (most recent call last):
File "testcidnelite.py", line 13, in <module>
print 3 + str(2)
TypeError: unsupported operand type(s) for +: 'int' and 'str'
我希望它只打印出第二个块(原始异常)。这可能吗?
答案 0 :(得分:7)
您可以使用Python的回溯模块来格式化异常。
from traceback import format_exception
def excepthook(self, type_, value, traceback):
print format_exception(type_, value, traceback)
sys.excepthook = self.excepthook
查看官方documentation了解更多信息和示例。