Import Errors

[Ryan]

Greetings,
First off, I'm new to python and so i apologize in advance if this
issue is a result of my poor python knowledge. However, I'm
receiving a bunch of import errors when running some of the scripts on
Ubuntu 9.04. I installed graphserver without issue (once i figured i
needed python-dev), and when I try to run hello_world.py I get the
following error:


ryan@home-desktop:~/graphserver/pygs/examples$ python hello_world/
hello_world.py
/usr/local/lib/python2.6/dist-packages/graphserver-0.1-py2.6.egg/
graphserver/libgraphserver.so
Traceback (most recent call last):
File "hello_world/hello_world.py", line 8, in <module>
from graphserver.core import TripHopSchedule, ServiceCalendar,
Timezone, Street, Link, State, Graph
ImportError: cannot import name TripHopSchedule

Similarly, when I attempt to run compile_graph.py I get:


ryan@home-desktop:~/graphserver/pygs$ python /home/ryan/graphserver/
apps/compile_graph/compile_graph.py link bart.gtfsdb bart.graphdb
/usr/local/lib/python2.6/dist-packages/graphserver-0.1-py2.6.egg/
graphserver/libgraphserver.so
Traceback (most recent call last):
File "/home/ryan/graphserver/apps/compile_graph/compile_graph.py",
line 3, in <module>
from graphserver.compiler.compile_graph import main
File "/usr/local/lib/python2.6/dist-packages/graphserver-0.1-
py2.6.egg/graphserver/compiler/__init__.py", line 1, in <module>
from tools import *
File "/usr/local/lib/python2.6/dist-packages/graphserver-0.1-
py2.6.egg/graphserver/compiler/tools.py", line 3, in <module>
from graphserver.ext.osm.osmdb import OSMDB
File "/usr/local/lib/python2.6/dist-packages/graphserver-0.1-
py2.6.egg/graphserver/ext/osm/osmdb.py", line 12, in <module>
from rtree import Rtree
ImportError: No module named rtree


Any assistance would be greatly appreciated. Thanks.

[Brandon Martin-Anderson]

Hey Ryan,

The import errors have two separate causes:

the hello_world.py error is caused by (as usual) depricated code hanging around in the codebase. The class TripHopSchedule has been removed, and hello_world.py is in need of an update.

As far as rtree goes - you probably don't have rtree! Information and installation here: http://pypi.python.org/pypi/Rtree/

-B

[Ryan]

Thanks for the pointer. Not the topic of this forum, but I'm running
into issues with Rtree. Installing spatialindex-1.4.0 creates the
libraries libspatialindex.so, libspatialindex.so.1, and
libspatialindex.so.1.0.0 but Rtree is looking for
libspatialindex_c.so. I get


...
Python 2.6.2 (release26-maint, Apr 19 2009, 01:56:41)
[GCC 4.3.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from rtree import core

Traceback (most recent call last):

File "<stdin>", line 1, in <module>
File "rtree/__init__.py", line 8, in <module>
from index import Rtree
File "rtree/index.py", line 2, in <module>
import core
File "rtree/core.py", line 94, in <module>
rt = ctypes.CDLL(lib_name)
File "/usr/lib/python2.6/ctypes/__init__.py", line 353, in __init__
self._handle = _dlopen(self._name, mode)
OSError: libspatialindex_c.so: cannot open shared object file: No such
file or directory





On Sep 11, 11:23 am, Brandon Martin-Anderson <badh...@gmail.com>
wrote:

> Hey Ryan,
>
> The import errors have two separate causes:
>
> the hello_world.py error is caused by (as usual) depricated code hanging
> around in the codebase. The class TripHopSchedule has been removed, and
> hello_world.py is in need of an update.
>
> As far as rtree goes - you probably don't have rtree! Information and
> installation here:http://pypi.python.org/pypi/Rtree/
>
> -B
>

[Nino Walker]

Look on the Rtree mailing list, and verify you have the right version of Rtree and spatialindex, as there's been recent changes which will create version incompatibilities.

[fruminator]

Nino, is this thread what you are referring to:
http://www.mail-archive.com/comm...@lists.gispython.org/msg00563.html
?

I am having basically the same error as you were:

File "/usr/local/lib/python2.6/dist-packages/Rtree-0.5.0-py2.6-linux-
x86_64.egg/rtree/core.py", line 97, in <module>

rt = ctypes.CDLL(lib_name)
File "/usr/lib/python2.6/ctypes/__init__.py", line 353, in __init__
self._handle = _dlopen(self._name, mode)

OSError: libsidx.so: cannot open shared object file: No such file or
directory


I guess I am confused because in that thread on the Rtree mailing list
they say they fixed it, but I just installed Rtree today and clearly
it's not fixed. I used your fix with LD_LIBRARY_PATH and it seems to
now work, but that is, as you say, not optimal.

Thanks,
Mike

On Sep 14, 1:28 pm, Nino Walker <n...@urbanmapping.com> wrote:
> Look on the Rtree mailing list, and verify you have the right version of Rtree and spatialindex, as there's been recent changes which will create version incompatibilities.
>
> -----Original Message-----
> From: graph...@googlegroups.com [mailto:graph...@googlegroups.com] On Behalf Of Ryan
> Sent: Friday, September 11, 2009 9:20 PM
> To: Graphserver
> Subject: Re: Import Errors
>
> Thanks for the pointer.  Not the topic of this forum, but I'm running
> into issues with Rtree.  Installing spatialindex-1.4.0 creates the

> librarieslibspatialindex.so,libspatialindex.so.1, andlibspatialindex.so.1.0.0 but Rtree is looking for

[Nino Walker]

They fixed it in the trunk but didn't re-release it.

[Leon Stenneth]

So what is the final solution to the fix "Import error: No module named RTree"