On 02/02/2012 12:51 AM, Steven D'Aprano wrote:
On Wed, 01 Feb 2012 17:47:22 +0000, Andrea Crotti wrote:
Yes they are exactly the same, because in that file I just write exactly
the same list,
but when modifying it at run-time it doesn't work, while if at the
application start
there is this file everything works correctly...
That's what really puzzles me.. What could that be then?
Are you using IDLE or WingIDE or some other IDE which may not be
honouring sys.path? If so, that's a BAD bug in the IDE.
Are you changing the working directory manually, by calling os.chdir? If
so, that could be interfering with the import somehow. It shouldn't, but
you never know...
Are you adding absolute paths or relative paths?
No, no and absolute paths..
You say that you get an ImportError, but that covers a lot of things
going wrong. Here's a story. Could it be correct? I can't tell because
you haven't posted the traceback.
When you set site-packages/my_paths.pth you get a sys path that looks
like ['a', 'b', 'fe', 'fi', 'fo', 'fum']. You then call "import spam"
which locates b/spam.py and everything works.
But when you call sys.path.extend(['a', 'b']) you get a path that looks
like ['fe', 'fi', 'fo', 'fum', 'a', 'b']. Calling "import spam" locates
some left over junk file, fi/spam.py or fi/spam.pyc, which doesn't
import, and you get an ImportError.
And no the problem is not that I already checked inspecting at run-time..
This is the traceback and it might be related to the fact that it runs
from the
.exe wrapper generated by setuptools:
Traceback (most recent call last):
File "c:\python25\scripts\dev_main-script.py", line 8, in <module>
load_entry_point('psi.devsonly==0.1', 'console_scripts', 'dev_main')()
File "h:\git_projs\psi\psi.devsonly\psi\devsonly\bin\dev_main.py",
line 152, in main
Develer(ns).full_run()
File "h:\git_projs\psi\psi.devsonly\psi\devsonly\bin\dev_main.py",
line 86, in full_run
run(project_name, test_only=self.ns.test_only)
File "h:\git_projs\psi\psi.devsonly\psi\devsonly\environment.py",
line 277, in run
from psi.devsonly.run import Runner
File "h:\git_projs\psi\psi.devsonly\psi\devsonly\run.py", line 7, in
<module>
from psi.workbench.api import Workbench, set_new_dev_main
ImportError: No module named workbench.api
Another thing which might matter is that I'm launching Envisage
applications, which
heavily rely on the use of entry points, so I guess that if something is
not in the path
the entry point is not loaded automatically (but it can be forced I
guess somehow).
I solved in another way now, since I also need to keep a dev_main.pth in
site-packages
to make Eclipse happy, just respawning the same process on ImportError works
already perfectly..
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