Develop Reference

'No Route To Host' error in installing 'NLTK Data'

I have been trying to install nltk.data for a project. As described in this documentation, I tried to install it using both methods mentioned.
Through python:
import nltk
nltk.download()
The problem is in the next step, ( please find the screenshot attached).
The error message is:
Packages:
Error connecting to server: [Errno 113] No route to host
Through command line:
sudo python -m nltk.downloader -d /usr/local/share/nltk_data
This resulted in the same issue too.
As mentioned in this answer, my DEFAULT_URL was https://raw.githubusercontent.com/nltk/nltk_data. Even after changing it to http://www.nltk.org/nltk_data/, I am getting the same problem.
Can anybody help, please?

Installing PyGMO on Mac OS X Yosemite - missing boost-python3?

I've been trying to install PyGMO on my Mac OS X 10.10. I'm using Anaconda Python 2.3, so it comes with python 3.4.
I followed the instructions on http://esa.github.io/pygmo/install.html and did try to build boost manually but didn't have much luck with building boost-python... The instructions I could find on the official website was very limited...
While using ccmake to run the build file in pagmo/build directory, it complained that it did not find boost-python3...
So I reverted to using brew to install boost. Thanks to the info I found on this page: http://ryanclouser.com/2015/07/16/Mac-OSX-Build-Boost-Python-with-Python3-Support/
Now I have both boost and boost-python installed, but still the ccmake process for PyGMO complains about not being able to find boost-python3.
Are there any environment variables I need to set? In the ccmake config screen do I need to set Boost_PYTHON3_LIBRARY_RELEASE or Boost_PYTHON3_LIBRARY_DEBUG?
LATEST EDIT: This SHA256 below mis-match is resolved. Turned out it was caused by source forge site being down when I ran the commands... Some better error messages would have helped.
However, when I tried to get boost and boost-python with brew, I got the following SHA256 hash code mismatch error.
Anyone has any idea how to fix this?
>$ sudo brew install boost-python --with-python3
==> Installing boost-python dependency: boost
==> Downloading https://homebrew.bintray.com/b...
####################################################################### 100.0%
==> Pouring boost-1.58.0.yosemite.bottle.tar.gz
🍺 /usr/local/Cellar/boost/1.58.0: 10718 files, 486M
==> Installing boost-python
==> Downloading https://downloads.sourceforge....
==> Downloading from http://downloads.sourceforge.n...
####################################################################### 100.0%
Error: SHA256 mismatch
Expected: fdfc204fc33ec79c99b9a74944c3e54bd78be4f7f15e260c0e2700a36dc7d3e5
Actual: 818a4b8bbcb50878a8b1b9f71b4274d242ab46bf860c74676e98dec1d0248821
Archive: /Library/Caches/Homebrew/boost-python-1.58.0.tar.bz2
To retry an incomplete download, remove the file above.
Tried to delete the cached boost package files as suggested a few times but it didn't work either.
Thanks guys.

Ok problem resolved. Here's the best practice to get boost on Mac OS X.
Use Homebrew! but the key is to use the --with-python3 switch! Credits to this page: http://ryanclouser.com/2015/07/16/Mac-OSX-Build-Boost-Python-with-Python3-Support/
>$ brew install boost-python --with-python3
Assuming you have CMake already, just follow the instructions on PyGMO's website.
pagmo/build>$ ccmake ../
This will then bring up the config screen, everything should look fine. If not, do rm -rf * in pagmo/build folder to clear everything and start again (this resolved the issue with boost-python3 for me mentioned above.
Then run make and sudo make install as mentioned on the website.
PyGMO should be ready for use in python after that!
I had the following error message. However, if I start python in the ~/anaconda/lib folder where I have my anaconda installed, import PyGMO worked, so it's probably some library path thing that needs to be fixed.
>>> import PyGMO as gmo
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Users/xxx/anaconda/lib/python3.4/site-packages/PyGMO/__init__.py", line 57, in <module>
from PyGMO import core, algorithm, migration, problem, topology, test, util
File "/Users/xxx/anaconda/lib/python3.4/site-packages/PyGMO/core/__init__.py", line 2, in <module>
from PyGMO.core._core import *
ImportError: dlopen(/Users/xxx/anaconda/lib/python3.4/site-packages/PyGMO/core/_core.so, 2):
Library not loaded: libpython3.4m.dylib
Referenced from: /Users/xxx/anaconda/lib/python3.4/site-packages/PyGMO/core/_core.so
Reason: image not found
**Latested EDIT: ** Did some searching around, a partial solution to the import error above, is to set DYLD_LIBRARY_PATH=~/anaconda/lib. With this, imports will work when you launch python in a console. However, IPython-notebook would not start for me... Also have seen that Max OS doesn't really have a dynamic search also...

Does anyone know how to compile Megahal on Ubuntu?

I have been trying to compile megahal for a few hours now and i dont seem to be getting anywhere. Has anyone had success with this?
http://megahal.alioth.debian.org/
I keep getting an error that says :
inlined from ‘load_personality.constprop’ at megahal.c:3283:8,
inlined from ‘change_personality.constprop’ at megahal.c:3332:5:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:293:2: warning: call to ‘__fread_chk_warn’ declared with attribute warning: fread called with bigger size * nmemb than length of destination buffer
return __fread_chk_warn (__ptr, __bos0 (__ptr), __size, __n, __stream);
^
cc1: some warnings being treated as errors
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
Makefile:44: recipe for target 'pythonmodule' failed
make: *** [pythonmodule] Error 1
I have installed python via sudo apt-get and i have been over every thread that talks about "'x86_64-linux-gnu-gcc' but I have found no solution

You are getting these errors just because you don't have the python development headers installed. You can install it using following command
sudo apt-get install python-dev ( for python 2.x )
sudo apt-get install python3-dev ( for python 3 )

you need the python developer module "python-dev".this will help you
error: command 'gcc' failed with exit status 1 while installing eventlet
after upgrading to vivid 15.04 on ubuntu i couldn't compile the module anymore so i tried something else. Since in the main folder there is a directory named Megahal with a Makefile in it, i tried to compile from there. First you need to go to that directory.
cd /home/user/Downloads/megahal-9.1.1/Megahal/
you need to go where you unzipped the archive and there you can read the README file and start compiling.
perl Makefile.PL
i copied the missing files i was able to find to that folder and from there
make
make test
but this didn't work for me and afther that
make install
i had to do
sudo make install
and that is all. unfortunately for me i have a problem with perl i think.
I keep getting this error from the module "PL_thr_key" after i load it to the eggdrop. The eggdrop works normally except for the module. No module, no AI and no fun :(

Building Qscintilla2 python bindings on Windows7 with MinGW (PyQt4.11, Qt4.8.6)

I've tried to resolve this prolem for about 3days, and I'd finally felt that I need to ask for help by creating my own question.
I have Windows 7x64 and Qt4.8.6 installed.
I need Python with PyQt and Qscintilla2 to be installed and working.
Now I wil describe my last actions. I did everything like included packages instructions said.
1) Installed Python2.7.9 32bit from official website.
2) Downloaded SIP from here (dev snapshot), then:
configure.py —platform win32-g++
mingw32-make
mingw32-make install
3) Downloaded PyQt from here (not the installer but dev snapshot, cause I need to build with MinGW and istaller producec MSVC version), then:
configure-ng.py -spec win32-g++
mingw32-make
mingw32-make install
Ater these steps I tested PyQt on my project - everything works fine.
Then I starded trying to install Qsnitilla2.
4) Downloaded Qsnitilla2 from here (dev snapshot), then:
a) in Qt4Qt5 folder:
qmake qscintilla.pro -spec win32-g++
mingw32-make
mingw32-make install
This had installed Qsnitilla2 in Qt4.8.6 as I saw;
b) in Python folder( F..ing Python bindngs, excuse my french):
config.py —spec win32-g++
mingw32-make
after this I got ld.exe error (linking error):
Then, afted doing some research, I manually edited my Makefile.Release (by adding -lpython27 to LIBS parameter):
LIBS = -L"c:\Qt-mingw\4.8.6\lib" -LC:\Python27\libs -LC:\Qt-mingw\4.8.6\lib -lqscintilla2 -lQtGui4 -lQtCore4 -lpython27
After this, my mingw32-make completed succesfully. So:
mingw32-make install
This had installed Qscintilla2 Python bindings.
Now I can see Qsci autocomlplete in Eclipse.
So i've tried this:
from PyQt4.Qsci import QsciScintilla
And i've got this in traceback:
from PyQt4.Qsci import QsciScintilla
ImportError: DLL load failed: Не найден указанный модуль
(Translation: The specified module could not be found)
I've tried this with both dev snapshot and src packages from Riverbank website. And also with MinGW 4.8.1 and MinGW-w64 4.8.4. I can't use MinGW-w64 over 4.8 version cause I need boost-1.55 and it only supports MinGW 4.8.
I don't know what to do now, but I really want to use Scintilla in my project. So i'll be very gratefull for any suggestions.

Have you ever tried to load the QsciScintilla right from the console? I mean you need to enter the directory where the QScintilla located( this means current folder is the default folder), then try run the command "from PyQt4.Qsci import QsciScintilla", if this load module failure still happens, this possibly means you need extra dynamic which QScintilla depends, you need to use dll dependency to find out if some other libraries were missing, then put the missing libraries into the same folder of QsciScintilla.

Error Installing imgseek on Mac Os

I am trying to install imgseek- the server version (http://www.imgseek.net/) to do image analysis.I am able to install all the dependencies successfully using:
sudo port install swig
sudo port install swig-python
sudo easy_install twisted
sudo port install imagemagick
sudo easy_install epydoc
Then I download isk-daemon from the downloads(isk-daemon-0.9.3.tar.gz) and build and install it. Everything runs succesfully.
But when I run iskdaemon.py from the command prompt, i get the following error:
sk-daemon : WARNING | no config file (isk-daemon.conf) found. Looked at local dir, home user dir and /etc/iskdaemon. Using defaults for everything.
root : ERROR Unable to load the C++ extension "_imgdb.so(pyd)" module.
root : ERROR See http://www.imgseek.net/isk-daemon/documents-1/compiling
Traceback (most recent call last):
File "/Users/gghanakota/anaconda/lib/python2.7/site-packages/isk_daemon-0.9.3-py2.7-macosx-10.5-x86_64.egg/imgSeekLib/ImageDB.py", line 35, in
import imgdb
File "/Users/gghanakota/anaconda/lib/python2.7/site-packages/isk_daemon-0.9.3-py2.7-macosx-10.5-x86_64.egg/imgSeekLib/imgdb.py", line 28, in
_imgdb = swig_import_helper()
File "/Users/gghanakota/anaconda/lib/python2.7/site-packages/isk_daemon-0.9.3-py2.7-macosx-10.5-x86_64.egg/imgSeekLib/imgdb.py", line 20, in swig_import_helper
import _imgdb
ImportError: dlopen(/Users/gghanakota/anaconda/lib/python2.7/site-packages/isk_daemon-0.9.3-py2.7-macosx-10.5-x86_64.egg/_imgdb.so, 2): Symbol not found: __ZNSs4_Rep20_S_empty_rep_storageE
Referenced from: /Users/gghanakota/anaconda/lib/python2.7/site-packages/isk_daemon-0.9.3-py2.7-macosx-10.5-x86_64.egg/_imgdb.so
Expected in: dynamic lookup
Please help!

I had the same problem when I was trying to install iskdaemon on my Mac (osx yosemite).
The problem in my case was that when I was building it, the c++ compiler threw two errors on using min function in imgdb.cpp
The error was because the types of the variables in the min function were not the same. Consequently the build failed and the imgdb module wasn't produced.
I fixed it by adding a simple typecast to the variables passed to the min function:
I changed: min(sz, numres) to min(sz, (long int)numres) on line 1003,
and min((V.size()/2), numres) to min((int)(V.size()/2), numres) on line 1327
I built again and it is working now.
Check if you get any errors when you build, maybe you are facing the same issue.