will not run within PIL build directory

[ghost]

ipython will not start from within PIL build dir for me:
steps to reproduce

virtualenv myenv
pip install PIL --no-install
cd myenv/build/PIL
ipython
(bang, traceback below)
cd ..
ipython
(everything is fine)

traceback

Traceback (most recent call last):
  File "/home/user/.virtualenvs/project/bin/ipython", line 9, in <module>
    load_entry_point('ipython==0.13.1', 'console_scripts', 'ipython')()
  File "/home/user/.virtualenvs/projectlib/python2.6/site-packages/IPython/frontend/terminal/ipapp.py", line 388, in launch_new_instance
    app.initialize()
  File "<string>", line 2, in initialize
  File "/home/user/.virtualenvs/project/lib/python2.6/site-packages/IPython/config/application.py", line 84, in catch_config_error
    return method(app, *args, **kwargs)
  File "/home/user/.virtualenvs/project/lib/python2.6/site-packages/IPython/frontend/terminal/ipapp.py", line 324, in initialize
    self.init_shell()
  File "/home/user/.virtualenvs/project/lib/python2.6/site-packages/IPython/frontend/terminal/ipapp.py", line 340, in init_shell
    ipython_dir=self.ipython_dir)
  File "/home/user/.virtualenvs/project/lib/python2.6/site-packages/IPython/config/configurable.py", line 318, in instance
    inst = cls(*args, **kwargs)
  File "/home/user/.virtualenvs/project/lib/python2.6/site-packages/IPython/frontend/terminal/interactiveshell.py", line 360, in __init__
    user_module=user_module, custom_exceptions=custom_exceptions
  File "/home/user/.virtualenvs/project/lib/python2.6/site-packages/IPython/core/interactiveshell.py", line 476, in __init__
    self.init_reload_doctest()
  File "/home/user/.virtualenvs/project/lib/python2.6/site-packages/IPython/core/interactiveshell.py", line 666, in init_reload_doctest
    doctest_reload()
  File "/home/user/.virtualenvs/project/lib/python2.6/site-packages/IPython/utils/doctestreload.py", line 74, in doctest_reload
    doctest.DocTestRunner.run = dhook_wrap(doctest.DocTestRunner.run)
AttributeError: 'module' object has no attribute 'DocTestRunner'

[Carreau]

Short. From my phone.

What is the content of the cwd?
Does it have any folder that are module (doctest for example?) and that
would be imported in place of python/ipython ones because of conflicting
name ?

If this is the case there is nothing we can do.
Le 15 nov. 2012 10:45, "Bartek" notifications@github.com a écrit :

ipython will not start from within PIL build dir for me:
my (slightly) steps to reproduce

virtualenv myenv
pip install PIL --no-install
cd myenv/build/PIL
ipython
(bang, traceback below)
cd ..
ipython
(everything is fine)

traceback

Traceback (most recent call last):
File "/home/bartek/.virtualenvs/pko/bin/ipython", line 9, in
load_entry_point('ipython==0.13.1', 'console_scripts', 'ipython')()
File "/home/bartek/.virtualenvs/pko/lib/python2.6/site-packages/IPython/frontend/terminal/ipapp.py", line 388, in launch_new_instance
app.initialize()
File "", line 2, in initialize
File "/home/bartek/.virtualenvs/pko/lib/python2.6/site-packages/IPython/config/application.py", line 84, in catch_config_error
return method(app, _args, *_kwargs)
File "/home/bartek/.virtualenvs/pko/lib/python2.6/site-packages/IPython/frontend/terminal/ipapp.py", line 324, in initialize
self.init_shell()
File "/home/bartek/.virtualenvs/pko/lib/python2.6/site-packages/IPython/frontend/terminal/ipapp.py", line 340, in init_shell
ipython_dir=self.ipython_dir)
File "/home/bartek/.virtualenvs/pko/lib/python2.6/site-packages/IPython/config/configurable.py", line 318, in instance
inst = cls(_args, *_kwargs)
File "/home/bartek/.virtualenvs/pko/lib/python2.6/site-packages/IPython/frontend/terminal/interactiveshell.py", line 360, in init
user_module=user_module, custom_exceptions=custom_exceptions
File "/home/bartek/.virtualenvs/pko/lib/python2.6/site-packages/IPython/core/interactiveshell.py", line 476, in init
self.init_reload_doctest()
File "/home/bartek/.virtualenvs/pko/lib/python2.6/site-packages/IPython/core/interactiveshell.py", line 666, in init_reload_doctest
doctest_reload()
File "/home/bartek/.virtualenvs/pko/lib/python2.6/site-packages/IPython/utils/doctestreload.py", line 74, in doctest_reload
doctest.DocTestRunner.run = dhook_wrap(doctest.DocTestRunner.run)
AttributeError: 'module' object has no attribute 'DocTestRunner'

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/2580.

[takluyver]

There's a doctest.py file there. It looks like we're adding the cwd to sys.path in IPython.core.shellapp.InteractiveShellApp.init_path, which is called before IPython.utils.doctestreload.doctest_reload, which tries to load doctest.

I think the simplest fix would be to import doctest at the main import time, but I'm not quite clear why it's being imported inside a function at present. doctestreload looks like older code, so perhaps @fperez can shed some light on it?

[bfroehle]

The current directory when IPython is started will already be in sys.path --- Python does this automatically.

init_path only adds '' which is the current directory (which would change if you run %cd <dir> in IPython). So importing doctest earlier won't actually fix this bug. In fact, the bug is essentially unavoidable.

See also #2578.

[takluyver]

Python automatically adds the directory where the script is located to sys.path, but I don't think it automatically adds the working directory. If you pick a name that's imported at the normal time, like re, and make re.py in the working directory, it doesn't cause a problem for IPython.

The >>> interactive shell does add the working directory, and I think init_path is us mimicking that.

[bfroehle]

Yes, correct. So I guess we just close this issue. Sorry.. misread that. Reopening.

[takluyver]

Marked as bug, low priority (because there's an easy workaround)

[takluyver]

We no longer try to load doctest at all, so this isn't a problem now.