# New dependencies?

**URL:** <https://www.ruby-forum.com/t/new-dependencies/227499>\
**Category:** GNU Radio\
**Created:** [March 18, 2013, 12:21pm UTC](https://www.ruby-forum.com/t/new-dependencies/227499 "2013-03-18T12:21:37Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Volker\_S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/b5a626/32.png) [@Volker\_S](https://www.ruby-forum.com/u/Volker_S)\
**Post date:** [March 18, 2013, 12:21pm UTC](https://www.ruby-forum.com/t/new-dependencies/227499/1 "2013-03-18T12:21:37Z")

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Hi all,

I just updated gnuradio form git to  
v3.6.4-86-g77743314 / 3.6.5git

Now one of my applications doesn’t run any more.  
The call stack is:

Traceback (most recent call last):  
File “./DisplayPngExample.py”, line 23, in   
from grc\_gnuradio import blks2 as grc\_blks2  
File  
“/usr/local/gnuradio/lib64/python2.7/site-packages/grc\_gnuradio/blks2/ **init**.py”,  
line 22, in   
from packet import options, packet\_encoder, packet\_decoder,   
File  
“/usr/local/gnuradio/lib64/python2.7/site-packages/grc\_gnuradio/blks2/packet.py”,  
line 21, in   
from gnuradio import gr, digital  
File  
“/usr/local/gnuradio/lib64/python2.7/site-packages/gnuradio/digital/ **init**.py”,  
line 45, in   
from fftshift import fftshift, ifftshift  
File  
“/usr/local/gnuradio/lib64/python2.7/site-packages/gnuradio/digital/fftshift.py”,  
line 24, in   
from scipy import fftpack  
ImportError: No module named scipy

And this is the conten of line 23

from grc\_gnuradio import blks2 as grc\_blks2.

I never had installed the scipy package before on my system ( gentoo, 64  
bit version )

Is scipy now required ?

Many thanks

Volker

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<div class="post-metadata">

**Author:** ![Volker\_S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/b5a626/32.png) [@Volker\_S](https://www.ruby-forum.com/u/Volker_S)\
**Post date:** [March 18, 2013, 1:22pm UTC](https://www.ruby-forum.com/t/new-dependencies/227499/2 "2013-03-18T13:22:24Z")

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Hi Volker,

that file doesn’t need to be there.  
To fix it straight away, apply this:

> <https://github.com/mbr0wn/gnuradio/commit/055a847a850ff03af48bfc18a80a00ad34735d8c>

We’ll get that into master.

MB

On Mon, Mar 18, 2013 at 12:20:04PM +0100, Volker S. wrote:

> File “./DisplayPngExample.py”, line 23, in   
> File  
> “/usr/local/gnuradio/lib64/python2.7/site-packages/gnuradio/digital/fftshift.py”,
> 
> [Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio)  
> –  
> Karlsruhe Institute of Technology (KIT)  
> Communications Engineering Lab (CEL)

Dipl.-Ing. Martin B.  
Research Associate

Kaiserstraße 12  
Building 05.01  
76131 Karlsruhe

Phone: +49 721 608-43790  
Fax: +49 721 608-46071  
www.cel.kit.edu

KIT – University of the State of Baden-Württemberg and  
National Laboratory of the Helmholtz Association

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<div class="post-metadata">

**Author:** ![Volker\_S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/b5a626/32.png) [@Volker\_S](https://www.ruby-forum.com/u/Volker_S)\
**Post date:** [March 18, 2013, 2:27pm UTC](https://www.ruby-forum.com/t/new-dependencies/227499/3 "2013-03-18T14:27:51Z")

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Hi Martin,

that did it.

Many thanks

Volker

Am 18.03.2013 13:21, schrieb Martin B. (CEL):