即使在sys.path.append之后也无法导入python模块

Question

Working on a cluster with CENTOS and Python 2.6.6

Trying to add modules to a python function

The function some_func.py looks like:

#!/usr/bin/env python
from __future__ import division
import sys

sys.path.append('/Users/username/modules')
import some_module as sm

In the /Users/username/modules I have two files: __init__.py and some_module.py

It works when I do it on my Mac, but does not work when I run it the CENOS machine.

I get the error: Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: No module named some_module

Any ideas what might be going on?

Answer 1

Adding /Users/username/modules to your path and then trying to import some_module means that Python is actually looking for a directory named /Users/username/modules/some_module , which would contain (at a minimum) a file named __init__.py .

I don't know why it worked on your Mac computer. Perhaps you have another copy of some_module laying around in another place, and it's finding that copy?

Try this on your Mac:

import some_module
print (some_module.__file__)

And see what it reports as the full pathname.