graph-tool import causing attempt to open socket? - python-2.7

I'm running graph-tool on Debian Jessie amd64. This server does not have X installed, nor do I wish to install it. Whenever I attempt to import * (per the quick start documentation), the following happens:
Python 2.7.9 (default, Mar 1 2015, 12:57:24)
[GCC 4.9.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from graph_tool.all import *
Unable to init server: Could not connect: Connection refused
Unable to init server: Could not connect: Connection refused
>>>
Attempting an strace on a test script is cumbersome, since there are a large number of libraries loaded when the above happens, but from spending a couple hours trawling through the output, I think it may be X or gdk-related. I'm hoping someone here knows what's causing this, and what I can do to prevent these seemingly cosmetic warnings from occurring, aside from redirecting STDERR to /dev/null.
Thanks.

This happens because it attempts to import Gtk, which tries to open an X11 connection.

Related

Installing the correct version of GDAL

My version of Python is [MSC v.1916 32 bit (Intel)] on win32 but I cannot see a release 1916 in -
http://www.gisinternals.com/release.php
https://www.lfd.uci.edu/~gohlke/pythonlibs/#gdal
https://trac.osgeo.org/osgeo4w/
Possibly I am misreading the websites. To be honest I found https://trac.osgeo.org/osgeo4w/ very confusing to navigate.
Can anyone give me any guidance?
Update
I used the ​64bit OSGeo4W network installer from https://trac.osgeo.org/osgeo4w/
and everything is working now.
To find out if you need the 32 or 64 bit installer you can do
(project2_env) C:\Users\HP\django_project3>python
And it will give you below information.
Python 3.7.3 (default, Apr 24 2019, 15:29:51) [MSC v.1915 64 bit (AMD64)] :: Anaconda, Inc. on win32
Warning:
This Python interpreter is in a conda environment, but the environment has
not been activated. Libraries may fail to load. To activate this environment
please see https://conda.io/activation
Type "help", "copyright", "credits" or "license" for more information.
>>>

Python 2.7.13 configured with `--enable-optimizations` puts many trash logs

when I open python console and close it by Ctrl + D,it comes with many logs.
why? how can I get rid of this.
$ /usr/local/bin/python
Python 2.7.13 (default, May 23 2017, 19:19:44)
[GCC 4.8.2 20140120 (Red Hat 4.8.2-15)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> // close with Ctrl + D
profiling:/root/Python-2.7.13:Cannot create directory
profiling:/root/Python-2.7.13/Objects/bytes_methods.gcda:Skip
profiling:/root/Python-2.7.13:Cannot create directory
profiling:/root/Python-2.7.13/Python/structmember.gcda:Skip
profiling:/root/Python-2.7.13:Cannot create directory
profiling:/root/Python-2.7.13/Python/getcopyright.gcda:Skip
...
This happened to me using Debian Stretch whilst installing Python 3.6.1. I initially installed it with, "sudo make altinstall" which caused those errors. However, if you install it as root rather than using sudo, the errors go away.
I answered this question a bit late but I hope it helps someone.
This happened to me when I did ./configure --enable-optimizations. Removing the --enable-optimizations flag before compilation and installation makes these messages go away.

conda list doesn't show installed package

I have been listing the packages in an environment using 'conda list'. The list that is then produced doesn't include packages that I know are installed in the environment, in this case, flickrapi.
((getpics)) C:\Users\Rdebbout>conda list fl
packages in environment at C:\Users\Rdebbout\AppData\Local\Continuum\Anaconda2\envs\getpics:
pyflakes 1.1.0 py27_0
This is pointing to the correct environment and if you look below, when I am in the same environment, I can import flickrapi without a problem
((getpics)) C:\Users\Rdebbout>ipython
Python 2.7.11 |Continuum Analytics, Inc.| (default, Feb 16 2016, 09:58:36) [MSCv.1500 64 bit (AMD64)]
Type "copyright", "credits" or "license" for more information.
IPython 4.2.0 -- 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 flickrapi import FlickrAPI
In [2]:
What is the reason for this?

Cannot run python 3.5 along with python 2.7.4 in Windows 10

I am trying to install Python 3.5.0 alongside with Python 2.7.4.
C:\Users\Animesh>python
Python 2.7.4 (default, Apr 6 2013, 19:55:15) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>
C:\Users\Animesh>py
Python 2.7.4 (default, Apr 6 2013, 19:55:15) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>
C:\Users\Animesh>py -2
Python 2.7.4 (default, Apr 6 2013, 19:55:15) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>
C:\Users\Animesh>py -3
Fatal Python error: Py_Initialize: unable to load the file system codec
File "E:\Python27\Lib\encodings\__init__.py", line 123
raise CodecRegistryError,\
^
SyntaxError: invalid syntax
Current thread 0x00003514 (most recent call first):
I tried a bunch of commands as shown above but python 3.5 does not seem to work. I even tried creating a project on PyCharm using the Python 3.5 interpreter but it gives that same error.
How should I rectify this error?
The official installer for Python will install 3.5 in C:\Program Files\Python 3.5.
It will automatically add this path to your PATH variable (if you tell it). It seems like you did not enable this option.
In your PATH (not PYTHONPATH) setting.
You can get to this by going to the Settings application and searching for environment, then clicking on "Edit environment variables for your account" - this will open a properties window; click Environment Variables on the bottom to load the settings for your account.
You need to add the path manually to the PATH variable, and remove the E:\Python2.7 path.
Do this, then restart your command prompt and the default Python version will be 3.5.
For PyCharm, you can just add a new local interpreter in settings (CTRL+ALT+S) and point it directly to the location where you installed Python 3.5.
Since both interpreters are named python.exe, the first one found in your PATH will be executed. In practical terms this means, whatever is in your PATH is the default Python for your system. To execute the other version, you need to point to it explicitly.
If you have Python 2.7 in E:\Python2.7 and Python 3.5 in C:\Program Files\Python 3.5, pick the one you want to be the default and add the path to it in your PATH environment variable - you can always refer to the other installation by typing the full path to the python.exe file.
C:\>python.exe # this will launch whatever is found first in your `PATH`
C:\>E:\Python2.7\python.exe # explicitly launch the 2.7 version.
As far as PyCharm is concerned, it will read PATH and pick up the default interpreter, you can add the other one in your settings by browsing to its location.
Then, when creating a new project, you can pick which version you want to work with.

Can't find django-admin.py in Lubuntu 12.10

I just installed Lubuntu 12.10 on a new laptop, and I'm trying to get Django working. I installed it from Synaptic Package Manager, and when I try to make a sample project on the command line, this is what I get:
amanda#amanda-ThinkPad-E420:~$ django-admin.py startproject caltrain
django-admin.py: command not found
And I verified Django is installed correctly,
amanda#amanda-ThinkPad-E420:~$ python
Python 2.7.3 (default, Sep 26 2012, 21:51:14)
[GCC 4.7.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import django
>>> print(django.get_version())
1.4.1
>>>
Is this some sorta path issue or something? I don't remember having this issue on my Mac, but again I'm not very Unix savvy to begin with.
This information may be a bit stale, but I found this information that seems similar to your problem: http://ubuntuforums.org/showthread.php?t=1267372
With this solution:
Name of "django-admin.py" was changed to "django-admin" in /usr/bin directory in the python-django package.
To get around this I just created a symbolic link to django-admin named django-admin.py.
ln -s /usr/bin/django-admin /usr/bin/django-admin.py (as root)
Hope this helps, but again this was written in 2009.
You should see this. it contains details concerning problems with django-admin.py location
https://docs.djangoproject.com/en/1.6/faq/troubleshooting/#troubleshooting-django-admin-py