six.reraise fails

[northbear]

HI,
We are using modernize for upgrading a code. And we get fails after replacing raise with six.reraise in a function below:

def reformat_raise_error(header='', footer=''):
    if DEBUG or (not header and not footer):
        raise
    raise sys.exc_info()[0], '%s %s %s' % (header, sys.exc_info()[1], footer), sys.exc_info()[2]

It get translated in this way:

def reformat_raise_error(header='', footer=''):
    if DEBUG or (not header and not footer):
        raise
    six.reraise(sys.exc_info()[0], '%s %s %s' % (header, sys.exc_info()[1], footer), sys.exc_info()[2])

it falls with an error: type 'str' has no attribute __trackback__.

I tried to refactor the raise call.

def reformat_raise_error(header='', footer=''):
    if DEBUG or (not header and not footer):
        raise
    t, v, tb = sys.exc_info()
    six.reraise(t, t(' '.join([header, str(v), footer])), tb)

But I got even more frustrated error when running it with python2.7:

    six.reraise(t, t(' '.join([header, str(v), footer])), tb)
TypeError: function takes exactly 5 arguments (1 given)

I'd appreciate any advice.