[issue4438] Add an easy way to __import___ submodules
Mart Sõmermaa [EMAIL PROTECTED] added the comment: Implement imp.import_module() instead. See http://mail.python.org/pipermail/python-dev/2008-November/083758.html Added file: http://bugs.python.org/file12147/imp_import_module.diff ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue4438 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4438] Add an easy way to __import___ submodules
Mart Sõmermaa [EMAIL PROTECTED] added the comment: Note that the hack described in http://bugs.python.org/issue2090 should be disabled once this gets integrated. ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue4438 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4438] Add an easy way to __import___ submodules
Mart Sõmermaa [EMAIL PROTECTED] added the comment: Corrections and clarifications: * I'd say labeling the patch naive and breaking things was misleading (there was a breakage that resulted from stale files with incorrect permissions from my previous build of Python 2.6; after a make distclean all tests passed as described above). The patch is correct and backwards-compatible in Python level, but it introduces a change in the C API: PyAPI_FUNC(PyObject *) PyImport_ImportModuleLevel(char *name, - PyObject *globals, PyObject *locals, PyObject *fromlist, int level); + PyObject *globals, PyObject *locals, PyObject *fromlist, + int level, char submodule); * The patch was made against Python 2.6 release source. * The argument is named 'submodule' instead of 'toplevel' to avoid confusion with 'level'. ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue4438 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4438] Add an easy way to __import___ submodules
Mart Sõmermaa [EMAIL PROTECTED] added the comment: See also http://mail.python.org/pipermail/python-dev/2008-November/083727.html ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue4438 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4438] Add an easy way to __import___ submodules
Mart Sõmermaa [EMAIL PROTECTED] added the comment:
Attached is a naive proof-of-concept implementation (that breaks things,
i.e. the real implementation should strive for better
general compatibility), but works as expected:
__import__('imprt.foo.foo', submodule=True)
module 'imprt.foo.foo' from 'imprt/foo/foo.py'
__import__('imprt.foo.foo', submodule=False)
module 'imprt' from 'imprt/__init__.py'
__import__('imprt.foo.foo')
module 'imprt' from 'imprt/__init__.py'
# Die on unexpected arguments like strings, lists etc to
# avoid confusion
__import__('imprt.foo.foo', submodule='z')
Traceback (most recent call last):
File stdin, line 1, in module
TypeError: an integer is required
--
keywords: +patch
Added file: http://bugs.python.org/file12136/issue4438.diff
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[issue4438] Add an easy way to __import___ submodules
New submission from Mart Sõmermaa [EMAIL PROTECTED]:
The need to dynamically import module foo given a module name string
'bar.baz.foo' is quite common.
Quite often, the hack described in http://bugs.python.org/issue2090 is
used (see e.g. the Google code results linked from the issue).
Quoting Brett Cannon from the issue:
I plan to add a much simpler API to the imp module for people to use
directly so that these abuses don't continue.
Although there are reasonable workarounds, let the current ticket be a
remainder for Brett that his plan is indeed needed.
Perhaps the easiest thing to do would be to add yet another argument,
e.g. 'toplevel', to __import__, such that:
__import__('imprt.foo.foo') # toplevel=True by default
module 'imprt' from 'imprt/__init__.pyc'
__import__('imprt.foo.foo', toplevel=False)
module 'imprt.foo.foo' from 'imprt/foo/foo.pyc'
The latter can currently be achieved by
__import__('imprt.foo.foo', {}, {}, ['foo'])
module 'imprt.foo.foo' from 'imprt/foo/foo.pyc'
which is cumbersome if the module name is given in a string, resulting
in unnecessarily complex code:
modname = imprt.foo.foo
__import__(modname, {}, {}, [modname.rsplit(., 1)[-1]])
module 'imprt.foo.foo' from 'imprt/foo/foo.pyc'
--
components: Interpreter Core, Library (Lib)
messages: 76460
nosy: mrts
severity: normal
status: open
title: Add an easy way to __import___ submodules
type: feature request
versions: Python 2.7, Python 3.1
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[issue4438] Add an easy way to __import___ submodules
Mart Sõmermaa [EMAIL PROTECTED] added the comment: Just a note that `make test` passes: 322 tests OK. 38 tests skipped: test_aepack test_al test_applesingle test_bsddb test_bsddb185 test_bsddb3 test_cd test_cl test_codecmaps_cn test_codecmaps_hk test_codecmaps_jp test_codecmaps_kr test_codecmaps_tw test_curses test_dbm test_dl test_gl test_imageop test_imgfile test_kqueue test_linuxaudiodev test_macos test_macostools test_normalization test_ossaudiodev test_pep277 test_py3kwarn test_scriptpackages test_socketserver test_startfile test_sunaudiodev test_tcl test_timeout test_urllib2net test_urllibnet test_winreg test_winsound test_zipfile64 3 skips unexpected on linux2: test_tcl test_dbm test_bsddb ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue4438 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
