Module is found by python2.7 but not python3.4 in debian 8

[deutschluz]

Hello Debian User forum,
I m trying to use a python module in python3.4 but I did the whole PythonPath variable thing in my .bashrc file and the module only works with python 2.7. If I run python3.4 interactively and try to import the module, the interpreter tells me there s no such module

In detail, assume $ is a bash prompt, # is a comment, >>> is python prompt; I did all of this:

$ emacsclient ~/.bashrc #yes i use emacs as my editor server

In emacs now:

export PYTHONPATH="${PYTHONPATH}:path/to/module"
Close emacs

$ source ~/.bashrc

$ python2.7

'>>>' import Module as M

'>>>' # it works

However if I do

$python3.4
'>>>' import Module as M
error no such module

What is going here and how do i get python3.4 to find this module. Also, I got it from a github repo and so I didn't use APT. I have a hunch thats going to be very important.

[fred barclay]

There's a good chance that module doesn't exist for python 3, or has a different name. I can't tell you how many times this has tripped me up when translating between versions...

It'd help, though, if you said exactly which module it is.

[deutschluz]

Thanks for the reply.

Yeah I should ve mentioned that in the OP. Its networkx, a graph data structures/algos package.

Also I went looking in the Debian Python Policy Appendix and that really didn't help. I really didn't know what I was looking for.

[fred barclay]

Yep, there's definitely two versions--one for python2, and one for python3.

Try installing the python 3 one:

Code: Select all

sudo apt-get install python3-networkx

Hopefully it should import as normal afterwards.

Cheers!
Fred

[deutschluz]

Yep, there's definitely two versions--one for python2, and one for python3.

Try installing the python 3 one:

Code: Select all

sudo apt-get install python3-networkx

Hopefully it should import as normal afterwards.

Cheers!
Fred

oh..thats great. thanks for the help!

[fred barclay]

No worries, mate.