easy_install -i with local index does not work on python 3.3

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Originally reported by: antti_haapala (Bitbucket: antti_haapala, GitHub: Unknown)

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#!python

% easy_install -i `pwd`/eggs 
...
Searching for Babel
Reading file:/.../eggs/index/Babel/
...
venv33/lib/python3.3/site-packages/setuptools/package_index.py", line 1057, in local_open
    {'content-type':'text/html'}, StringIO(body))
TypeError: initial_value must be str or None, not bytes

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• Bitbucket: https://bitbucket.org/pypa/setuptools/issue/116

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Original comment by antti_haapala (Bitbucket: antti_haapala, GitHub: Unknown):

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Ah, we did our local index using BasketWeaver, the reason is ofc that the open uses 'rb' to read the 'index.html'; I guess it should be 'r' on all platforms, and also in py2

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Original comment by jaraco (Bitbucket: jaraco, GitHub: jaraco):

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Corrected a TypeError when reading a local package index on Python 3. Fixes #116.

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Original comment by jaraco (Bitbucket: jaraco, GitHub: jaraco):

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Released as 1.4.2.