operands have identical tzinfo members (meaning object identity -- "is").
I misunderstood the intent here, reading wrong conclusion into
conflicting clues.

window) to a combobox listing the known interpreters.

correct FSSpec implementations.

Carbon.File version, so the old method names work.

MethodGenerator, this should be OSErrMethodGenerator.

subtraction, work as documented.  In the Python implementation,
they weren't calling utcoffset() if both operands had the same
tzinfo object.  That's fine if it so happens that the shared
tzinfo object returns a fixed offset (independent of operand),
but can give wrong results if that's not so, and the latter
obtains in a tzinfo subclass instance trying to model both
standard and daylight times.  The C implementation was already
doing this "correctly", so we're just adding tests to verify it.

on OSX then the actual error (file not found) was obscured by the
error message that tried to be helpful about the allowed arguments. Fixed.

normal 2.3 framework install) and MacPython-OSX-$(VERSION) (for the
experimental Jaguar addon install).

module.

The code is shorter, more readable, faster, and dramatically increases the
range of acceptable dates.

Also, used the floor division operator in leapdays().

argument to a tzinfo method doesn't have a matching tzinfo member.

{timetz,datetimetz}.{uctcoffset,dst} do return timedelta (or None).

Remove space between \end {verbatim}

M idle
M idle.py
M idle.pyw
M setup.py

Switch back to installing IDLE as a package.  The IDLE GUI and the
subprocess will both attempt to start up via the package mechanism, but if
IDLE is not yet installed it is possible to run by calling python idle.py
in the IDLE source directory, or to add the source directory to sys.path.

One advantage of doing it this way is IDLE stays off sys.path.

Developed in collaboration with Tony Lownds.

timetz.

subprocess.  Currently it opens a dead shell window.

   from its source directory.
2. Replace final traceback '?' with '-toplevel-'
3. Remove duplicated import boolcheck