Re: [Discuss-gnuradio] Basic python question

[Ryan Connelly]

Oops that's funny I muxed up the echo and export commands! This is what I meant:

export $PYTHONPATH="/usr/local/lib64/python2.7/site-packages"

On Thu, Jun 7, 2012 at 8:39 AM, Ryan Connelly
<address@hidden> wrote:
> Type $PYTHONPATH in bash what does it return? Also from the Python
> interpreter (type python in bash), type
>
> import sys
> sys.path
>
> What does this return?
>
> They should return things like /usr/lib64 (and
> lib)/python2.7/site-packages and /usr/local/lib64 (and
> lib)/python2.7/site-packages.
>
> So what python does when it looks for a module to import, it looks in
> those folders defined by pythonpath and sys.path. If you want to
> import a package that's called rtlsdr, there should be a folder in one
> of the site-packages folders called rtlsdr. Additionally in that
> folder there should be a __init__.py file. That's how finding modules
> works in a nutshell.
>
> If you didn't have a PYTHONPATH, type this into a bash prompt to set
> one (it will set for that user only)
>
> export 1 >> $PYTHONPATH=/usr/local/lib64/python2.7/site-packages
>
> reference: http://docs.python.org/tutorial/modules.html
>
> On Wed, Jun 6, 2012 at 11:28 PM, Phil <address@hidden> wrote:
>> I'm almost afraid to ask such a basic question. A Google search shows that
>> the Internet is awash with all sorts of tutorials but I still haven't
>> discovered the answer.
>>
>> It dawned on me a couple of days ago that gnuradio is not a plug-and -play
>> SDR, like several of the Windows SDR applications that I've played with, but
>> a series of building blocks. My journey into gnuradio came to a halt very
>> quickly.
>>
>> My question is, how do I tell Python (I'm using it from the command line, no
>> IDE yet) where the modules are located? As in the following example.
>>
>>>>> from rtlsdr import *
>> Traceback (most recent call last):
>>  File "<stdin>", line 1, in <module>
>> ImportError: No module named rtlsdr
>>
>> --
>> Regards,
>> Phil
>>
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