six import fails

[eshellman]

for whatever reason, the following statement fails inside a django 1.4.5 project (python 2.7.5)

from six.moves import zip_longest as izip_longest

(in record.py)

[Wooble]

How did you install pymarc? You might need to install six separately if setup.py didn't do it for you.

[edsu]

what is the error?

[eshellman]

2014-10-09 15:58:56,016 ERROR django.request[handle_uncaught_exception]: Internal Server Error: / Traceback (most recent call last): File "/Users/eric/.virtualenvs/regluit/lib/python2.7/site-packages/django/core/handlers/base.py", line 101, in get_response request.path_info) File "/Users/eric/.virtualenvs/regluit/lib/python2.7/site-packages/django/core/urlresolvers.py", line 298, in resolve for pattern in self.url_patterns: File "/Users/eric/.virtualenvs/regluit/lib/python2.7/site-packages/django/core/urlresolvers.py", line 328, in url_patterns patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module) File "/Users/eric/.virtualenvs/regluit/lib/python2.7/site-packages/django/core/urlresolvers.py", line 323, in urlconf_module self._urlconf_module = import_module(self.urlconf_name) File "/Users/eric/.virtualenvs/regluit/lib/python2.7/site-packages/django/utils/importlib.py", line 35, in import_module import(name) File "/Users/eric/regluit/urls.py", line 5, in from frontend.views import social_auth_reset_password File "/Users/eric/regluit/frontend/views.py", line 68, in from regluit.core import ( File "/Users/eric/regluit/core/marc.py", line 9, in import pymarc File "/Users/eric/.virtualenvs/regluit/lib/python2.7/site-packages/pymarc/init.py", line 62, in from .record import * File "/Users/eric/.virtualenvs/regluit/lib/python2.7/site-packages/pymarc/record.py", line 5, in from six.moves import zip_longest as izip_longest ImportError: cannot import name zip_longest

[eshellman]

pip show six

Name: six Version: 1.8.0 Location: /Users/eric/.virtualenvs/regluit/lib/python2.7/site-packages Requires:

[eshellman]

went back to pymarc 2.9.2 for now. In the 5 minutes I spent on Stack exchange, I got the impression that as a consequence of import magic, the precise syntax for import of six is fragile

[eshellman]

1.4.5

[edsu]

Sorry, I deleted my question after I saw you already reported it :-) I just created a very simple django v1.4.5 application with a single view, that imports pymarc and it works fine.

But I notice this as well https://groups.google.com/forum/#!topic/pymarc/cMWKNYiyDbU

What do you see if you bring up the django shell and try to import like this?

$ ./manage.py shell
Python 2.7.5 (default, Mar  9 2014, 22:15:05)
[GCC 4.2.1 Compatible Apple LLVM 5.0 (clang-500.0.68)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
(InteractiveConsole)
>>> from six.moves import zip_longest

[eshellman]

(regluit)gewurztraminer:~ eric$ django-admin.py shell Python 2.7.6 (v2.7.6:3a1db0d2747e, Nov 10 2013, 00:42:54) Type "copyright", "credits" or "license" for more information.

IPython 0.13.2 -- An enhanced Interactive Python. ? -> Introduction and overview of IPython's features. %quickref -> Quick reference. help -> Python's own help system. object? -> Details about 'object', use 'object??' for extra details.

In [1]: from six.moves import zip_longest

ImportError Traceback (most recent call last) /Users/eric/.virtualenvs/regluit/lib/python2.7/site-packages/django/core/management/commands/shell.pyc in () ----> 1 from six.moves import zip_longest

ImportError: cannot import name zip_longest

[edsu]

how about just:

import six

[eshellman]

this works: In [1]: import six In [2]: six.moves.zip_longest Out[2]: itertools.izip_longest

(in other words, in my environment, zip_longest isn't a name)

[eshellman]

so I think that

from six.moves import zip_longest as izip_longest

should be replaced with

izip_longest = six.moves.zip_longest

[edsu]

If you do that does it fix your problem? I am unable to replicate the problem you are describing.

[eshellman]

ok, let me fiddle a bit. I was hoping the problem would be obvious.