How to solve AttributeError when importing igraph?

Question

When I import the igraph package in my project, I get an AttributeError. This only happens in the project directory:

[12:34][~]$ python2
Python 2.7.1 (r271:8         


        

Answer 1

Most likely, there is a module io in ~/projectdir or one of the paths the project configures. The gzip module imported by igraph starts with

import io

and expect the built-in io module, not your project's one. Look for an io directory, or io.py or io.pyc. It can also help to scrutinize sys.path for any other directories (maybe outside of ~/projectdir) that might contain modules named io.