[issue15434] __import__() problem in 3.3
New submission from Stefan Krah stefan-use...@bytereef.org:
Using b127046831e2, I'm experiencing an import problem during the NumPy build.
I've reduced it to this scenario, which works in 3.2 but not in 3.3.
Note that in NumPy's setup.py, the equivalent of /home/stefan/tmp is
the first entry in sys.path. I'm not sure if this isolated example is
terribly useful:
$ pwd
/home/stefan/tmp
$ ls distutils/command/
__init__.py xyz.py
$ cat distutils/command/__init__.py
distutils_all = ['xyz']
__import__('distutils.command',globals(),locals(),distutils_all)
$ cat distutils/command/xyz.py
$
$ python3.2 distutils/command/__init__.py
$
$ /home/stefan/usr/bin/python3.3 distutils/command/__init__.py
Traceback (most recent call last):
File distutils/command/__init__.py, line 3, in module
__import__('distutils.command',globals(),locals(),distutils_all)
ImportError: No module named 'distutils.command.xyz'
$
--
components: Interpreter Core
messages: 166218
nosy: brett.cannon, pitrou, skrah
priority: high
severity: normal
status: open
title: __import__() problem in 3.3
type: behavior
versions: Python 3.3
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[issue15434] __import__() problem in 3.3
Stefan Krah stefan-use...@bytereef.org added the comment:
It looks like distutils/command from the stdlib is searched first
despite the fact that the first path entry is '/home/stefan/tmp'.
If distutils/command is replaced with a/b, the import works:
$ pwd
/home/stefan/tmp
$
$ ls a/b/
__init__.py xyz.py
$ ls distutils/command/
__init__.py xyz.py
$
$ cat a/b/__init__.py
import sys
sys.path.insert(0, '/home/stefan/tmp')
print(sys.path)
distutils_all = ['xyz']
__import__('a.b',globals(),locals(),distutils_all)
$ cat distutils/command/__init__.py
import sys
sys.path.insert(0, '/home/stefan/tmp')
print(sys.path)
distutils_all = ['xyz']
__import__('distutils.command',globals(),locals(),distutils_all)
$ /home/stefan/usr/bin/python3.3 a/b/__init__.py
['/home/stefan/tmp', '/home/stefan/tmp/a/b',
'/home/stefan/usr/lib/python33.zip', '/home/stefan/usr/lib/python3.3',
'/home/stefan/usr/lib/python3.3/plat-linux',
'/home/stefan/usr/lib/python3.3/lib-dynload',
'/home/stefan/.local/lib/python3.3/site-packages',
'/home/stefan/usr/lib/python3.3/site-packages']
['/home/stefan/tmp', '/home/stefan/tmp', '/home/stefan/tmp/a/b',
'/home/stefan/usr/lib/python33.zip', '/home/stefan/usr/lib/python3.3',
'/home/stefan/usr/lib/python3.3/plat-linux',
'/home/stefan/usr/lib/python3.3/lib-dynload',
'/home/stefan/.local/lib/python3.3/site-packages',
'/home/stefan/usr/lib/python3.3/site-packages']
$ /home/stefan/usr/bin/python3.3 distutils/command/__init__.py
['/home/stefan/tmp', '/home/stefan/tmp/distutils/command',
'/home/stefan/usr/lib/python33.zip', '/home/stefan/usr/lib/python3.3',
'/home/stefan/usr/lib/python3.3/plat-linux',
'/home/stefan/usr/lib/python3.3/lib-dynload',
'/home/stefan/.local/lib/python3.3/site-packages',
'/home/stefan/usr/lib/python3.3/site-packages']
Traceback (most recent call last):
File distutils/command/__init__.py, line 7, in module
__import__('distutils.command',globals(),locals(),distutils_all)
ImportError: No module named 'distutils.command.xyz'
--
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[issue15434] __import__() problem in 3.3
Changes by Arfrever Frehtes Taifersar Arahesis arfrever@gmail.com: -- nosy: +Arfrever ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15434 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15434] __import__() problem in 3.3
Changes by Brett Cannon br...@python.org: -- nosy: +eric.araujo ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15434 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15434] __import__() problem in 3.3
Éric Araujo mer...@netwok.org added the comment: Could you explain what is it you’re trying to achieve? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15434 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15434] __import__() problem in 3.3
Stefan Krah stefan-use...@bytereef.org added the comment: This is not a distutils issue. I want to know why this does not throw an exception ... python3.2 distutils/command/__init__.py ... while this raises ImportError: ~/usr/bin/python3.3 distutils/command/__init__.py For the path structure please see my previous message. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15434 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15434] __import__() problem in 3.3
Brett Cannon br...@python.org added the comment: It might be a runpy thing as Nick has been tweaking that lately to deal with pkgutil issues. And this is of course ignoring the fact that __import__ should never be called directly over importlib.import_module(). -- nosy: +ncoghlan ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15434 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15434] __import__() problem in 3.3
Changes by Chris Jerdonek chris.jerdo...@gmail.com: -- nosy: +cjerdonek ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15434 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15434] __import__() problem in 3.3
Stefan Krah stefan-use...@bytereef.org added the comment: Argh. __init__.py was missing in the top directory. For some reason Python 3.2 does not throw the error. Also, 3.3 does not raise in the case of the a/b directory structure: $ tree a a `-- b |-- __init__.py `-- xyz.py $ ~/usr/bin/python3.3 a/b/__init__.py ['/home/stefan/tmp', '/home/stefan/tmp/a/b', '/home/stefan/usr/lib/python33.zip', '/home/stefan/usr/lib/python3.3', '/home/stefan/usr/lib/python3.3/plat-linux', '/home/stefan/usr/lib/python3.3/lib-dynload', '/home/stefan/.local/lib/python3.3/site-packages', '/home/stefan/usr/lib/python3.3/site-packages'] With the added __init__.py, also the (fake) distutils package is OK: $ tree distutils/ distutils/ |-- __init__.py `-- command |-- __init__.py `-- xyz.py $ ~/usr/bin/python3.3 distutils/command/__init__.py ['/home/stefan/tmp', '/home/stefan/tmp/distutils/command', '/home/stefan/usr/lib/python33.zip', '/home/stefan/usr/lib/python3.3', '/home/stefan/usr/lib/python3.3/plat-linux', '/home/stefan/usr/lib/python3.3/lib-dynload', '/home/stefan/.local/lib/python3.3/site-packages', '/home/stefan/usr/lib/python3.3/site-packages'] Brett, if this all looks good to you, this issue can be closed. The original NumPy build error must be due to something else. Perhaps 3.3 should raise in the a/b case, too? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15434 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15434] __import__() problem in 3.3
Brett Cannon br...@python.org added the comment: The a/b case is legitimate in Python 3.3; namespace packages are delineated by not defining an __init__.py file. Closing as invalid. -- resolution: - invalid status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15434 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
