一个python问题异常，不知道怎么解决，大神速来

Traceback (most recent call last):

  File "/usr/lib/python2.7/dist-packages/tornado/web.py", line 1141, in _when_complete
    callback()
  File "/usr/lib/python2.7/dist-packages/tornado/web.py", line 1162, in _execute_method
    self._when_complete(method(*self.path_args, **self.path_kwargs),
  File "/alidata/www/bamboo/decorators/authenticated.py", line 46, in wrapper
    return method(self, *args, **kwargs)
  File "/alidata/www/bamboo/handlers/products/admin/product.py", line 315, in post
    self.redirect("/admin/product/save?step=2&oid=" + str(product.id))
  File "/usr/lib/python2.7/dist-packages/tornado/web.py", line 501, in redirect
    raise Exception("Cannot redirect after headers have been written")
Exception: Cannot redirect after headers have been written

报错信息：
系统异常'ascii' codec can't encode characters in position 51-66: ordinal not in range(128)

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很明显是编码问题，2.x里面编码是大问题，还是换3吧

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加上以下代码就好了

import sys
reload(sys)
sys.setdefaultencoding("UTF-8")

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换 Python 3.5~

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报错的那行是不是有print语句，去掉试一试，或者编解码试一试。