[issue16409] urlretrieve regression: first call returns block size as 0

[anatoly techtonik]

anatoly techtonik added the comment:

I see nothing wrong with reimplementation with different underlying lib as long as behavior stays the same and lib2to3 converts code correctly.

The API that block size if constant and non-zero is broken with Python 3.3. I thought that API breaks are only allowed for major Python versions?

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16409>
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