python - 自定义 python 回溯或调试输出

Question

我有一个回溯打印，想要自定义它的最后一部分。

• 内容:错误发生在另一个进程中，并且回溯就在那里(就像多处理中的情况一样)。
• 问题:我想要完整的回溯和错误报告。

类似于此代码:

>>> def f():
    g()

>>> def g():
    raise Exception, Exception(), None ## my traceback here

>>> f()

Traceback (most recent call last):
  File "<pyshell#14>", line 1, in <module>
    f()
  File "<pyshell#8>", line 2, in f
    g()
  File "<pyshell#11>", line 2, in g
    raise Exception, Exception(), None ## my traceback starts here
my traceback appears here
my traceback appears here

Exception

不可能的“解决方案”:子类和模拟对象

>>> from types import *
>>> class CostomTB(TracebackType):
    pass


Traceback (most recent call last):
  File "<pyshell#125>", line 1, in <module>
    class CostomTB(TracebackType):
TypeError: Error when calling the metaclass bases
    type 'traceback' is not an acceptable base type
>>> class CostomTB(object):
    pass

>>> try: zzzzzzzzz
except NameError:
    import sys
    ty, err, tb = sys.exc_info()
    raise ty, err, CostomTB()


Traceback (most recent call last):
  File "<pyshell#133>", line 5, in <module>
    raise ty, err, CostomTB()
TypeError: raise: arg 3 must be a traceback or None

我使用的是Python 2.7。

Answer 1

我猜你想要完整的回溯堆栈。看看这个有很好的例子python logging module .
如果出现一些困惑，请参阅 logging documentation .