* Constant statements will be ignored and the compiler will emit a
SyntaxWarning.
* Replace constant statement (ex: "1") with an expression statement
(ex: "x=1").
* test_traceback: use context manager on the file.
Issue #26204.
Issue #26100:
* Add subprocess._optim_args_from_interpreter_flags()
* Add test.support.optim_args_from_interpreter_flags()
* Use new functions in distutils, test_cmd_line_script, test_compileall and
test_inspect
The change enables test_details() test of test_inspect when -O or -OO command
line option is used.
The fix for Issue #21217 introduced a regression that caused
`inspect.getsource` to return incorrect results on nested
functions. The root cause of the regression was due to
switching the implementation to analyze the underlying
bytecode instead of the source code.
This commit switches things back to analyzing the source code
in a more complete way. The original bug and the regression
are both fixed by the new source code analysis.
The fix for Issue #21217 introduced a regression that caused
`inspect.getsource` to return incorrect results on nested
functions. The root cause of the regression was due to
switching the implementation to analyze the underlying
bytecode instead of the source code.
This commit switches things back to analyzing the source code
in a more complete way. The original bug and the regression
are both fixed by the new source code analysis.
collections.abc.Awaitable and collections.abc.Coroutine no longer
use __instancecheck__ hook to detect generator-based coroutines.
inspect.isawaitable() can be used to detect generator-based coroutines
and to distinguish them from regular generator objects.
isawaitable() was added before collections.abc.Awaitable; now,
with Awaitable, it is no longer needed (we don't have ishashable()
or isiterable() methods in the inspect module either).
Summary of changes:
1. Coroutines now have a distinct, separate from generators
type at the C level: PyGen_Type, and a new typedef PyCoroObject.
PyCoroObject shares the initial segment of struct layout with
PyGenObject, making it possible to reuse existing generators
machinery. The new type is exposed as 'types.CoroutineType'.
As a consequence of having a new type, CO_GENERATOR flag is
no longer applied to coroutines.
2. Having a separate type for coroutines made it possible to add
an __await__ method to the type. Although it is not used by the
interpreter (see details on that below), it makes coroutines
naturally (without using __instancecheck__) conform to
collections.abc.Coroutine and collections.abc.Awaitable ABCs.
[The __instancecheck__ is still used for generator-based
coroutines, as we don't want to add __await__ for generators.]
3. Add new opcode: GET_YIELD_FROM_ITER. The opcode is needed to
allow passing native coroutines to the YIELD_FROM opcode.
Before this change, 'yield from o' expression was compiled to:
(o)
GET_ITER
LOAD_CONST
YIELD_FROM
Now, we use GET_YIELD_FROM_ITER instead of GET_ITER.
The reason for adding a new opcode is that GET_ITER is used
in some contexts (such as 'for .. in' loops) where passing
a coroutine object is invalid.
4. Add two new introspection functions to the inspec module:
getcoroutinestate(c) and getcoroutinelocals(c).
5. inspect.iscoroutine(o) is updated to test if 'o' is a native
coroutine object. Before this commit it used abc.Coroutine,
and it was requested to update inspect.isgenerator(o) to use
abc.Generator; it was decided, however, that inspect functions
should really be tailored for checking for native types.
6. sys.set_coroutine_wrapper(w) API is updated to work with only
native coroutines. Since types.coroutine decorator supports
any type of callables now, it would be confusing that it does
not work for all types of coroutines.
7. Exceptions logic in generators C implementation was updated
to raise clearer messages for coroutines:
Before: TypeError("generator raised StopIteration")
After: TypeError("coroutine raised StopIteration")
The test needs to be skipped if unicodedata is either part of the
main binary (a repackaging of cpython on Windows?) or has python
source (pypy?). PEP 3147 makes __file__ point to the .py source,
so we need to change the extension check from looking for the
old .pyc/.pyo to just looking for .py.
Note that this skip should never trigger on CPython itself, so
one could argue it should be dropped instead. But since it exists,
why risk breaking someone else's python.
The new syntax is highly human readable while still preventing false
positives. The syntax also extends Python syntax to denote "self" and
positional-only parameters, allowing inspect.Signature objects to be
totally accurate for all supported builtins in Python 3.4.
PyMethodDescr_Type, _PyMethodWrapper_Type, and PyWrapperDescr_Type)
have been modified to provide introspection information for builtins.
Also: many additional Lib, test suite, and Argument Clinic fixes.
* You may now specify an expression as the default value for a
parameter! Example: "sys.maxsize - 1". This support is
intentionally quite limited; you may only use values that
can be represented as static C values.
* Removed "doc_default", simplified support for "c_default"
and "py_default". (I'm not sure we still even need
"py_default", but I'm leaving it in for now in case a
use presents itself.)
* Parameter lines support a trailing '\\' as a line
continuation character, allowing you to break up long lines.
* The argument parsing code generated when supporting optional
groups now uses PyTuple_GET_SIZE instead of PyTuple_GetSize,
leading to a 850% speedup in parsing. (Just kidding, this
is an unmeasurable difference.)
* A bugfix for the recent regression where the generated
prototype from pydoc for builtins would be littered with
unreadable "=<object ...>"" default values for parameters
that had no default value.
* Converted some asserts into proper failure messages.
* Many doc improvements and fixes.
Okay, hopefully the very last patch for this issue. :/
I realized when playing with Enum that the metaclass attributes weren't always displayed properly.
New patch properly locates DynamicClassAttributes, virtual class attributes (returned by __getattr__ and friends), and metaclass class attributes (if they are also in the metaclass __dir__ method).
Also had to change one line in pydoc to get this to work.
Added tests in test_inspect and test_pydoc to cover these situations.
Order of search is now:
1. Try getattr
2. If that throws an exception, check __dict__ directly
3. If still not found, walk the mro looking for the eldest class that has
the attribute (e.g. things returned by __getattr__)
4. If none of that works (e.g. due to a buggy __dir__, __getattr__, etc.
method or missing __slot__ attribute), ignore the attribute entirely.
inspect.getmembers and inspect.classify_class_attrs now search the metaclass
mro for types.DynamicClassAttributes (what use to be called
enum._RouteClassAttributeToGetattr); in part this means that these two
functions no longer rely solely on dir().
Besides now returning more accurate information, these improvements also
allow a more helpful help() on Enum classes.
svn+ssh://pythondev@svn.python.org/python/trunk
........
r82039 | r.david.murray | 2010-06-16 21:36:52 -0400 (Wed, 16 Jun 2010) | 10 lines
#8720: fix inspect regression by teaching getsourcefile about linecache.
The fix for issue 4050 caused a regression: before that fix, source
lines in the linecache would eventually be found by inspect. After the
fix inspect reports an error earlier, and the source isn't found.
The fix for the fix is to have getsourcefile look in the linecache for
the file and return the psuedo-filename if the source is there, just as
it already returns it if there is a PEP 302 loader.
........
svn+ssh://pythondev@svn.python.org/python/trunk
........
r79500 | benjamin.peterson | 2010-03-30 12:58:13 -0500 (Tue, 30 Mar 2010) | 4 lines
add inspect.getcallargs, which binds function arguments like a normal call #3135
Patch by George Sakkis
........
svn+ssh://pythondev@svn.python.org/python/trunk
........
r77952 | mark.dickinson | 2010-02-03 10:50:14 -0600 (Wed, 03 Feb 2010) | 1 line
Fix test_inspect.py data to match recent change to inspect_fodder.py (r77942).
........
r78030 | benjamin.peterson | 2010-02-06 14:14:10 -0600 (Sat, 06 Feb 2010) | 1 line
check type_getattro for correctness in a descriptor corner case
........
r78102 | andrew.kuchling | 2010-02-07 19:35:35 -0600 (Sun, 07 Feb 2010) | 1 line
Move distutils into its own subsection; add various items
........
r78104 | andrew.kuchling | 2010-02-08 07:22:24 -0600 (Mon, 08 Feb 2010) | 1 line
Add two items; move a subsection
........
r78107 | antoine.pitrou | 2010-02-08 14:25:47 -0600 (Mon, 08 Feb 2010) | 3 lines
Clarify and correct description for ccbench and iobench.
........
r78206 | r.david.murray | 2010-02-16 11:55:26 -0600 (Tue, 16 Feb 2010) | 3 lines
Make the references to Popen in the description of Call
and check_call into links.
........
r78216 | andrew.kuchling | 2010-02-18 08:16:48 -0600 (Thu, 18 Feb 2010) | 1 line
Add various items
........
r78296 | andrew.kuchling | 2010-02-21 20:08:45 -0600 (Sun, 21 Feb 2010) | 1 line
Re-word
........
r78297 | andrew.kuchling | 2010-02-21 20:29:10 -0600 (Sun, 21 Feb 2010) | 1 line
#7076: mention SystemRandom class near start of the module docs; reword change description for clarity. Noted by Shawn Ligocki.
........
r78328 | jack.diederich | 2010-02-22 12:17:16 -0600 (Mon, 22 Feb 2010) | 1 line
fixes issue #7530, serve_forever()
........
r78331 | andrew.kuchling | 2010-02-22 12:38:23 -0600 (Mon, 22 Feb 2010) | 1 line
Fix comment typo
........
r78332 | andrew.kuchling | 2010-02-22 12:42:07 -0600 (Mon, 22 Feb 2010) | 2 lines
#7627: MH.remove() would fail if the MH mailbox was locked;
it would call _unlock_file() and pass it a closed file object. Noted by Rob Austein.
........
r78336 | jack.diederich | 2010-02-22 13:55:22 -0600 (Mon, 22 Feb 2010) | 1 line
fixes issue #1522237, bad init check in _threading_local
........
r78339 | jack.diederich | 2010-02-22 15:27:38 -0600 (Mon, 22 Feb 2010) | 1 line
* fix issue#7476
........
r78343 | andrew.kuchling | 2010-02-22 16:48:41 -0600 (Mon, 22 Feb 2010) | 10 lines
#2560: remove an unnecessary 'for' loop from my_fgets() in Parser/myreadline.c.
Noted by Joseph Armbruster; patch by Jessica McKellar.
The original code was 'for (;;) {...}', where ... ended
with a 'return -2' statement and did not contain a 'break' or 'continue'
statement. Therefore, the body of the loop is always executed once.
Once upon a time there was a 'continue' in the loop, but it was removed in
rev36346, committed by mwh on Wed Jul 7 17:44:12 2004.
........
r78378 | jack.diederich | 2010-02-23 11:23:30 -0600 (Tue, 23 Feb 2010) | 1 line
fixup markup error
........
r78379 | jack.diederich | 2010-02-23 13:34:06 -0600 (Tue, 23 Feb 2010) | 1 line
issue#6442 use in operator instead of has_key
........
r78415 | dirkjan.ochtman | 2010-02-23 22:00:52 -0600 (Tue, 23 Feb 2010) | 1 line
Issue #7733: add explicit reference in asyncore docs.
........
r78559 | andrew.kuchling | 2010-03-01 13:45:21 -0600 (Mon, 01 Mar 2010) | 1 line
#7637: update discussion of minidom.unlink() and garbage collection
........
r78717 | benjamin.peterson | 2010-03-05 21:13:33 -0600 (Fri, 05 Mar 2010) | 1 line
settscdump is definitely an implementation detail
........
r78791 | andrew.kuchling | 2010-03-08 06:00:39 -0600 (Mon, 08 Mar 2010) | 1 line
Add various items
........
Yury Selivanov