You are installing (per your paste) python-biopython 1.42-2.
1.42-2ubuntu1 is in feisty-updates and fixes the problem.
Either you do not have feisty-updates for universe activated in your /etc/apt/sources.list or your mirror is stale.
You are installing (per your paste) python-biopython 1.42-2.
1.42-2ubuntu1 is in feisty-updates and fixes the problem.
Either you do not have feisty-updates for universe activated in your /etc/apt/ sources. list or your mirror is stale.