[ python-Bugs-1679498 ] Lib/io.py open uses unset "bs"

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Bugs item #1679498, was opened at 2007-03-12 22:28
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Category: Python Library
Group: Python 3000
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Jim Jewett (jimjjewett)
Assigned to: Nobody/Anonymous (nobody)
Summary: Lib/io.py open uses unset "bs"

Initial Comment:

Within the open function, it says
"""
        try:
            bs = os.fstat(raw.fileno()).st_blksize
        except (os.error, AttributeError):
            if bs > 1:
                buffering = bs
"""

Since this is the first use of name "bs", I wouldn't expect it to have any value after an Exception.  If this is actually correct, it at least deserves a comment.

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(second issue)

_PyFileIO sets self._writable but doesn't use it (even in writable())

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1679498&group_id=5470