Commit Graph

1616 Commits

Author SHA1 Message Date
Neal Norwitz 32a7e7f6b6 Change name from string to basestring 2002-05-31 19:58:02 +00:00
Jeremy Hylton 05ab2e693c Fix SF bug [ 561825 ] Confusing error for "del f()"
In the error message, say del for del and assign for everything else.
2002-05-31 14:08:29 +00:00
Guido van Rossum 5e2c5fa1bd imp_load_module(): correct and comment the sense of the test for '+'
in the mode (it's forbidden).
2002-05-30 17:33:07 +00:00
Jeremy Hylton 4ae6faed9f Cover a few corners in the 'U' mode integration to make imp work.
get_file() must convert 'U' to "r" PY_STDIOTEXTMODE before calling
fopen().

imp_load_module() must accept 'r' or 'U' or something with '+'.

Also reflow some long lines.
2002-05-30 17:15:25 +00:00
Neal Norwitz d68f5171eb As discussed on python-dev, add a mechanism to indicate features
that are in the process of deprecation (PendingDeprecationWarning).
Docs could be improved.
2002-05-29 15:54:55 +00:00
Guido van Rossum 05459c5e5e Accept u"..." literals even when Unicode is disabled. But these
literals must not contain \u, \U or \N escapes.  (XXX Should they also
not contain non-ASCII characters?)
2002-05-28 18:47:29 +00:00
Jack Jansen c88da1faa5 File modes in filedescr entries are also passed to Python, so we now put "U"
in there, and convert it to "rb" (or "r" for non-universal-newline builds)
before passing it to fopen().

Fixes #561326.
2002-05-28 10:58:19 +00:00
Guido van Rossum cacfc07d08 - A new type object, 'string', is added. This is a common base type
for 'str' and 'unicode', and can be used instead of
  types.StringTypes, e.g. to test whether something is "a string":
  isinstance(x, string) is True for Unicode and 8-bit strings.  This
  is an abstract base class and cannot be instantiated directly.
2002-05-24 19:01:59 +00:00
Guido van Rossum 2d3b986480 Disambiguate the grammar for backtick.
The old syntax suggested that a trailing comma was OK inside backticks,
but in fact (due to ideosyncrasies of pgen) it was not.  Fix the grammar
to avoid the ambiguity.  Fred: you may want to update the refman.
2002-05-24 15:47:06 +00:00
Tim Peters 84ee323cb9 John Aycock correctly pointed out that the grammar for
"power" was formally ambiguous.  Here's his fix.
2002-05-23 20:05:40 +00:00
Michael W. Hudson d95c828307 Fix for
[ 558249 ] softspace vs --disable-unicode

And #endif was in the wrong place.

Bugfix candidate, almost surely.

I think I will embark on squashing test failures in --disable-unicode builds --
a Real Bug was hiding under them.
2002-05-20 13:56:11 +00:00
Tim Peters 39a86c2188 SF bug 555042: zip() may trigger MemoryError.
NOT a bugfix candidate:  this is a fix to an optimization introduced
in 2.3.
2002-05-12 07:19:38 +00:00
Tim Peters 67d687a114 builtin_zip(): Take a good guess at how big the result list will be,
and allocate it in one gulp.

This isn't a bugfix, it's just a minor optimization that may or may not
pay off.
2002-04-29 21:27:32 +00:00
Tim Peters 5de9842b34 Repair widespread misuse of _PyString_Resize. Since it's clear people
don't understand how this function works, also beefed up the docs.  The
most common usage error is of this form (often spread out across gotos):

	if (_PyString_Resize(&s, n) < 0) {
		Py_DECREF(s);
		s = NULL;
		goto outtahere;
	}

The error is that if _PyString_Resize runs out of memory, it automatically
decrefs the input string object s (which also deallocates it, since its
refcount must be 1 upon entry), and sets s to NULL.  So if the "if"
branch ever triggers, it's an error to call Py_DECREF(s):  s is already
NULL!  A correct way to write the above is the simpler (and intended)

	if (_PyString_Resize(&s, n) < 0)
		goto outtahere;

Bugfix candidate.
2002-04-27 18:44:32 +00:00
Guido van Rossum 7dab2426ca - New builtin function enumerate(x), from PEP 279. Example:
enumerate("abc") is an iterator returning (0,"a"), (1,"b"), (2,"c").
  The argument can be an arbitrary iterable object.
2002-04-26 19:40:56 +00:00
Neil Schemenauer 89e3ee0ccf If Py_OptimizeFlag is false then always evaluate assert conditions, don't
test __debug__ at runtime.  Closes SF patch #548833.
2002-04-26 01:58:53 +00:00
Jeremy Hylton 1b0bf9b761 Ignore SIGXFSZ.
The SIGXFSZ signal is sent when the maximum file size limit is
exceeded (RLIMIT_FSIZE).  Apparently, it is also sent when the 2GB
file limit is reached on platforms without large file support.

The default action for SIGXFSZ is to terminate the process and dump
core.  When it is ignored, the system call that caused the limit to be
exceeded returns an error and sets errno to EFBIG.  Python
always checks errno on I/O syscalls, so there is nothing to do with
the signal.
2002-04-23 20:31:01 +00:00
Tim Peters 51e7f5caba Moving pymalloc along.
+ Redirect PyMem_{Del, DEL} to the object allocator's free() when
  pymalloc is enabled.  Needed so old extensions can continue to
  mix PyObject_New with PyMem_DEL.

+ This implies that pgen needs to be able to see the PyObject_XYZ
  declarations too.  pgenheaders.h now includes Python.h.  An
  implication is that I expect obmalloc.o needs to get linked into
  pgen on non-Windows boxes.

+ When PYMALLOC_DEBUG is defined, *all* Py memory API functions
  now funnel through the debug allocator wrapper around pymalloc.
  This is the default in a debug build.

+ That caused compile.c to fail:  it indirectly mixed PyMem_Malloc
  with raw platform free() in one place.  This is verbotten.
2002-04-22 02:33:27 +00:00
Tim Peters afb2c80b29 ceval.c/do_raise(): Tighten the test to disallow raising an instance of
a str subclass.

test_descr.py/string_exceptions():  New sub-test.

For 2.3 only.  Guido doesn't want this backported.
2002-04-18 18:06:20 +00:00
Jack Jansen 7b8c7546eb Mass checkin of universal newline support.
Highlights: import and friends will understand any of \r, \n and \r\n
as end of line. Python file input will do the same if you use mode 'U'.
Everything can be disabled by configuring with --without-universal-newlines.

See PEP278 for details.
2002-04-14 20:12:41 +00:00
Martin v. Löwis 314fc79ce8 Patch #542659: Eliminate duplicate check for NULL of freevars/cellvars. 2002-04-14 09:53:49 +00:00
Tim Peters 0e871188e8 _PyObject_DebugDumpStats: renamed to _PyObject_DebugMallocStats.
Added code to call this when PYMALLOC_DEBUG is enabled, and envar
PYTHONMALLOCSTATS is set, whenever a new arena is obtained and once
late in the Python shutdown process.
2002-04-13 08:29:14 +00:00
Tim Peters 2bbdba3c00 Removed more hair in support of future-generator stmts. 2002-04-12 01:20:10 +00:00
Jack Jansen 8ab04b4d65 Got rid of ifdefs for long-obsolete GUSI versions. 2002-04-11 20:46:23 +00:00
Guido van Rossum 50ee94fd41 is_builtin() is not a Boolean -- it can return -1, 0, 1. [SF #541652] 2002-04-09 18:00:58 +00:00
Marc-André Lemburg 95de5c1631 Move Unicode finalization further down in the chain.
Fixes bug #525620.
2002-04-08 08:19:36 +00:00
Guido van Rossum b8bff3f4a9 Return bools from functions named is_<whatever>(). 2002-04-07 06:34:38 +00:00
Guido van Rossum 55474766f0 Fix by Greg Chapman from SF bug 534347: Potential AV in vgetargskeywords.
Bugfix candidate.
2002-04-04 16:22:30 +00:00
Guido van Rossum 77f6a65eb0 Add the 'bool' type and its values 'False' and 'True', as described in
PEP 285.  Everything described in the PEP is here, and there is even
some documentation.  I had to fix 12 unit tests; all but one of these
were printing Boolean outcomes that changed from 0/1 to False/True.
(The exception is test_unicode.py, which did a type(x) == type(y)
style comparison.  I could've fixed that with a single line using
issubtype(x, type(y)), but instead chose to be explicit about those
places where a bool is expected.

Still to do: perhaps more documentation; change standard library
modules to return False/True from predicates.
2002-04-03 22:41:51 +00:00
Neal Norwitz 7829335763 Get rid of another use of PyArg_Parse() 2002-04-01 01:41:20 +00:00
Neal Norwitz 031829d3ef Use symbolic METH_VARARGS instead of 1 for ml_flags 2002-03-31 14:37:44 +00:00
Tim Peters 1f7df3595a Remove the CACHE_HASH and INTERN_STRINGS preprocessor symbols. 2002-03-29 03:29:08 +00:00
Neil Schemenauer 835840560b Call PyObject_GC_UnTrack before putting an object on the list of trash. 2002-03-29 03:07:29 +00:00
Skip Montanaro 995895f023 add comment reminding people about class hierarchy in Doc/lib/libexcs.tex 2002-03-28 20:57:51 +00:00
Guido van Rossum cfbf1a33c1 Fix an issue that was reported in but unrelated to the main problem of
SF bug 535905 (Evil Trashcan and GC interaction).

The SETLOCAL() macro should not DECREF the local variable in-place and
then store the new value; it should copy the old value to a temporary
value, then store the new value, and then DECREF the temporary value.
This is because it is possible that during the DECREF the frame is
accessed by other code (e.g. a __del__ method or gc.collect()) and the
variable would be pointing to already-freed memory.

BUGFIX CANDIDATE!
2002-03-28 20:17:52 +00:00
Fred Drake 7bf9715a8b Introduce two new flag bits that can be set in a PyMethodDef method
descriptor, as used for the tp_methods slot of a type.  These new flag
bits are both optional, and mutually exclusive.  Most methods will not
use either.  These flags are used to create special method types which
exist in the same namespace as normal methods without having to use
tedious construction code to insert the new special method objects in
the type's tp_dict after PyType_Ready() has been called.

If METH_CLASS is specified, the method will represent a class method
like that returned by the classmethod() built-in.

If METH_STATIC is specified, the method will represent a static method
like that returned by the staticmethod() built-in.

These flags may not be used in the PyMethodDef table for modules since
these special method types are not meaningful in that case; a
ValueError will be raised if these flags are found in that context.
2002-03-28 05:33:33 +00:00
Neal Norwitz 0c766a0bb6 Change sys_exit to use METH_VARARGS.
sys.exit() now requires 0-1 arguments.  Previously 2+ arguments were allowed.
2002-03-27 13:03:09 +00:00
Tim Peters fdba55fe8e I've been waiting 8 years for KSR to re-emerge from bankruptcy. If they
ever do, they can damn well #define _POSIX_THREADS their own damn selves.
2002-03-25 06:49:10 +00:00
Tim Peters 8e5fd53be0 SF bug 480215: softspace confused in nested print
This fixes the symptom, but PRINT_ITEM has no way to know what (if
anything) PyFile_WriteObject() writes unless the object being printed
is a string.  When the object isn't a string, this fix retains the
guess that softspace should be set after PyFile_WriteObject().
We might want to say that it's the job of filelike-object write methods
to leave the file's softspace in the correct state.  That would probably
be better -- but everyone relies on PRINT_ITEM to guess for them now.
2002-03-24 19:25:00 +00:00
Neil Schemenauer 0f2103fb16 Fix wording of sys.exit docstring. Close SF bug 534113. 2002-03-23 20:46:35 +00:00
Neil Schemenauer c24ea08644 Disable the parser hacks that enabled the "yield" keyword using a future
statement.
2002-03-22 23:53:36 +00:00
Neil Schemenauer 08de92a267 Re-enable GC of generator objects. 2002-03-18 20:45:09 +00:00
Martin v. Löwis 42ab61eeab Document that _POSIX_SEMAPHORES is predefined. 2002-03-17 17:19:00 +00:00
Martin v. Löwis cc89866b65 Patch #525532: Add support for POSIX semaphores. 2002-03-17 09:53:51 +00:00
Martin v. Löwis 7d1cd6947d Patch #504224: add plan9 threads include to thread.c. 2002-03-09 12:10:54 +00:00
Martin v. Löwis 3484a18af1 Patch #494045: patches errno and stat to cope on plan9. 2002-03-09 12:07:51 +00:00
Tim Peters d50e544b9f Docstring for filter(): Someone on the Tutor list reasonably complained
that it didn't tell enough of the truth.
Bugfix candidate (I guess -- it helps and it's harmless).
2002-03-09 00:06:26 +00:00
Martin v. Löwis cfeb3b6ab8 Patch #50002: Display line information for bad \x escapes:
- recognize "SyntaxError"s by the print_file_and_line attribute.
- add the syntaxerror attributes to all exceptions in compile.c.
Fixes #221791
2002-03-03 21:30:27 +00:00
Neal Norwitz 290d31e2fc SF #506611, fix sys.setprofile(), sys.settrace() core dumps
when no arguments are passed
2002-03-03 15:12:58 +00:00
Tim Peters e64ef931d6 SF patch 522961: Leak in Python/thread_nt.h, from Gerald S. Williams.
A file-static "threads" dict mapped thread IDs to Windows handles, but
was never referenced, and entries never got removed.  This gets rid of
the YAGNI-dict entirely.
Bugfix candidate.
2002-02-28 21:34:34 +00:00