Revert to using whrandom so it will work with older versions of Python.

sys.maxint and near -sys.maxint-1 work correctly.

From: "Tim Peters" <tim_one@email.msn.com>
To: "Guido van Rossum" <guido@CNRI.Reston.VA.US>
Date: Sat, 23 May 1998 21:45:53 -0400

Guido, the overflow checking in PyLong_AsLong is off a little:

1) If the C in use sign-extends right shifts on signed longs, there's a
spurious overflow error when converting the most-negative int:

Python 1.5.1 (#0, Apr 13 1998, 20:22:04) [MSC 32 bit (Intel)] on win32
Copyright 1991-1995 Stichting Mathematisch Centrum, Amsterdam
>>> x = -1L << 31
>>> x
-2147483648L
>>> int(x)
Traceback (innermost last):
  File "<stdin>", line 1, in ?
OverflowError: long int too long to convert

>
> 2) If C does not sign-extend, some genuine overflows won't be caught.
>
> The attached should repair both, and, because I installed a new disk and a C
> compiler today, it's even been compiled this time <wink>.
>
> Python 1.5.1 (#0, May 23 1998, 20:24:58) [MSC 32 bit (Intel)] on win32
> Copyright 1991-1995 Stichting Mathematisch Centrum, Amsterdam
> >>> x = -1L << 31
> >>> x
> -2147483648L
> >>> int(x)
> -2147483648
> >>> int(-x)
> Traceback (innermost last):
>   File "<stdin>", line 1, in ?
> OverflowError: long int too long to convert
> >>> int(-x-1)
> 2147483647
> >>> int(x-1)
> Traceback (innermost last):
>   File "<stdin>", line 1, in ?
> OverflowError: long int too long to convert


end-casing-ly y'rs  - tim

Also, here is a new version of import_nt.c, which allows you to register a
Debug module in the registry.  While I was there I removed some of the
ugliness - what was I thinking :-)

Now you can click on revisions and diffs again!

(new!) contains.

registers an input file handler for stdin with Tcl and handles Tcl
events until something is available on stdin; it then deletes the
handler and returns from EventHook().

This works with or without GNU readline, and doesn't busy-wait.

It still doesn't work for Mac or Windows :-(

performs ...".

Rationalized the doc strings.

Also simplify the module initialization -- we don't need a __version__
which is set to "$Rev" :-) and we don't need a fatal error when the
initialization fails.

platform's line separator.  \n on Unix, \r\n on DOS, OS/2 and Windows,
\r on Macs.

Make sure that no tp_as_numbers->nb_<whatever> function is called
without checking for a NULL pointer.  Marc-Andre Lemburg will love it!
(Except that he's just rewritten all this code for a different
approach to coercions ;-( )

argument was initialized to Py_None, but later checked for NULL.
Consistently use Py_None.

func_defaults and func_doc (alias __doc__) may be assigned to.  For
the first two, there's a type restriction to code object and tuple,
respectively.

tp_as_sequence or tp_as_mapping structure is made without checking it
for NULL first.

(nb_nonzero, mp_length, sq_length).

swapped arguments].

Also make sure that no use of a function pointer gotten from a
tp_as_sequence or tp_as_mapping structure is made without checking it
for NULL first.

the code here becomes much simpler.  In particular: abs(), divmod(),
pow(), int(), long(), float(), len(), tuple(), list().

Also make sure that no use of a function pointer gotten from a
tp_as_sequence or tp_as_mapping structure is made without checking it
for NULL first.

A few other cosmetic things, such as properly reindenting slice().

programming style.

Recoded many routines to incorporate better error checking, and/or
better versions of the same function found elsewhere
(e.g. bltinmodule.c or ceval.c).  In particular,
Py_Number_{Int,Long,Float}() now convert from strings, just like the
built-in functions int(), long() and float().

Sequences and mappings are now safe to have NULL function pointers
anywhere in their tp_as_sequence or tp_as_mapping fields.  (A few
places in other files need to be checked in too.)

Renamed PySequence_In() to PySequence_Contains().

	versions <= 1.2, >= 1.3.

old value in a temporary and XDECREF it only after then new value has
been set.  This prevents the (unlikely) case where the destructor of
the member uses the containing object -- it would find it in an
undefined state.

Similar to {description}.

# XXX TO DO: make the distribution functions below into methods.

get_line_buffer() does not take an optional argument.

be used just as well, so this saves one Python call in many cases!

Run 500 steps instead of forever.