[Checkins] [zopefoundation/Zope] e538bb: Be more defensive by only relying on `six.PY2`.

[GitHub]

  Branch: refs/heads/unicode-object-id
  Home:   https://github.com/zopefoundation/Zope
  Commit: e538bbe78a489a33cec3eab921426ef9ac604033
      https://github.com/zopefoundation/Zope/commit/e538bbe78a489a33cec3eab921426ef9ac604033
  Author: Steffen Allner <sa at gocept.com>
  Date:   2018-05-16 (Wed, 16 May 2018)

  Changed paths:
    M src/OFS/tests/testObjectManager.py

  Log Message:
  -----------
  Be more defensive by only relying on `six.PY2`.



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