[issue19146] Improvements to traceback module

[Claudiu.Popa]

Claudiu.Popa added the comment:

> I already thought of that, but that doesn't work: the iterator version
> would return the stack in the wrong order (note the .reverse() call in the code).


Then, couldn't this:

   stack = list(_extract_stack_iter(_get_stack(f), limit=limit))	
   stack.reverse()
   return stack
	

be rewritten as this, knowing the fact that _extract_stack_iter returns an iterable?

  return reversed(_extract_stack_iter(_get_stack(f), limit=limit))

And in this case, extract_stack_ex could become extract_stack_iter or something like that.

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<http://bugs.python.org/issue19146>
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