Strange Python Import Error

Question

I am new to Python. I am getting ImportError and seem to have tried everything that's in the documentation and the various notes in this site and other

My code is structured as follows:

 vsm
 |
 |______bin
 |      vsmx.py
 |______site-packages
          __init__.py
        |
        |_____libs
             __init__.py
             monitor.py

In monitor.py I have a function named getStr and the two __init__.py files are empty

I have the PYTHONPATH set to vsm/site-packages & vsm/site-packages/libs. When I run from command line, python bin/vsmx.py, I get:

Traceback (most recent call last):
  File "bin/vsmx.py", line 15, in <module>
    from libs.monitor import getStr
   File "/var/src/vsm/bin/vsmx.py", line 15, in <module>
     from libs.monitor import getStr
ImportError: No module named monitor

However, when I try to run this interactively, it seems to work. I tried on both windows and linux using python 2.6.1.

Any pointers will be much appreciated

Did you try importing from like this import site-packages.libs.monitor ? I think you're missing the first part. I always have problems with importing too. This is assuming your current dir is bin. — Jeff
– Jeff, Commented Jan 16, 2012 at 17:16
If vsm/site-packages/libs is on your PYTHONPATH, can't you just do import monitor? — Thomas K
– Thomas K, Commented Jan 16, 2012 at 17:39

Mikko Ohtamaa · Accepted Answer · 2012-01-16 19:28:34Z

1

ImportError: No module... is usually a very (obscure) error meaning that you have circular imports.

Module a.py:

 import b

Module b.py:

 import a

Then main.py:

 import a

This should cause ImportError: No module named a, because a is importing b and not ready when b tries to import it.

answered Jan 16, 2012 at 19:28

Mikko Ohtamaa

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