Unable to use python-igraph, no method or attribute available after installation (Ubuntu 14.04.)

Question

I installed python-igraph using synaptic on my Ubuntu 14.04 machine. build-essential and python-dev are installed as well. But when I try to access anything within this library, nothing seems to work except importing the package. I'm using python 2.7.6.

First I try this:

import igraph

Output: nothing, so far so good.

With

import igraph
from igraph import *

I still get no output, so there should be nothing wrong.

For

import igraph
from igraph import *
dir(igraph)

I still get nothing, which is weird.

And if I start using igraph,

import igraph
from igraph import *
print igraph.__version__

this comes up:

Traceback (most recent call last):
  File "./igraph.py", line 1, in <module>
    import igraph
  File "/home/everdream/Downloads/igraph.py", line 3, in <module>
    print igraph.__version__
AttributeError: 'module' object has no attribute '__version__'

Another example:

import igraph
from igraph import *
g = igraph.Graph.Tree(127, 2)

I get

Traceback (most recent call last):
  File "./igraph.py", line 1, in <module>
    import igraph
  File "/home/everdream/Downloads/igraph.py", line 3, in <module>
    g = igraph.Graph.Tree(127, 2)
AttributeError: 'module' object has no attribute 'Graph'

Can anyone advice me on what might be causing my problem? I don't even know where I should look for it.

Answer 1

You called your file /home/everdream/Downloads/igraph.py , rename it and remove the igraph.pyc file. You are trying to import from this file not the actual igraph module.

import igraph;print igraph.__file__ will show you which file you have imported.