and add corresponding tests.
Possible 2.5 backport candidate

of using pipes that cause deadlocks.

while running under -3.

running under -3.

  argument in python 2.5, this broke code that subclassed Popen to include its
  own poll method.  Fixed my moving _deadstate to an _internal_poll method.

warnings when run under -3.

warnings triggered under -3.

package, when run under -3, about using <>.

under -3 through test_xmlrpc.

move from list.sort(cmp=) to key=.

cookielib.

unpacking in parameter lists and using callable(). Found through -3.

urlparse when run under -3.

AttributeError since __slots__ were added to zipfile.ZipInfo in
r46967 two years ago.
Add a warning about the removal of TarFileCompat in Python 3.0.

Tcl command objects.

under -3.

while running under -3.

-3.

have the feature of putting all the small EBNF snippets together
into one big file.

Fixes part of #3131.

unpacking in a parameter list and set some constants by hand that were pulled
from the 'compiler' package.

SyntaxWarning as triggered by -3.

by -3.