ImportError: No module named gnuradio

[plcortesc@…]

Hello everyone!

I have some troubles trying to execute a GNURadio python script. Gnuradio-companion works well, but when I modify the python script in order to modify the blocks, I cannot execute it from the terminal getting always this error:

$ python top_block.py

Traceback (most recent call last):

File "top_block.py", line 8, in <module>

from gnuradio import eng_notation

ImportError: No module named gnuradio

Then I try to set up the environment variable $PYTHONPATH as follows:

$ export PYTHONPATH=/opt/local/lib/python2.7/site-packages:$PYTHONPATH

Now, the error changes when I try to run the top_block.py script:

$ python top_block.py Traceback (most recent call last):

File "top_block.py", line 9, in <module>

from gnuradio import gr

File "/usr/local/lib/python2.7/site-packages/gnuradio/gr/init.py", line 41, in <module> File "/usr/local/lib/python2.7/site-packages/gnuradio/gr/runtime_swig.py", line 28, in <module> File "/usr/local/lib/python2.7/site-packages/gnuradio/gr/runtime_swig.py", line 20, in swig_import_helper

ImportError: No module named _runtime_swig

Do you have any suggestions? I am completely stuck and I don't know how to keep going. Thank you in advance!