Re: [Discuss-gnuradio] Running flowgraphs from command line

[Patrick Krämer]

Hey Michael, Hey Kevin, Hey all,

thanks for your help!

I found that by specifying the python version I want to use when running the file, everything works fine. Like this:

python2.7 if_else_mod.py 

This would be acceptable for me, however, I decided to do some of the stuff you suggested. I get the following output when running env:

Patricks-iMac:~ patrick$ env

TERM_PROGRAM=Apple_Terminal

SHELL=/bin/bash

TERM=xterm-256color

TMPDIR=/var/folders/3j/qy7_9bpx29g_nf_ymbkw_td00000gn/T/

Apple_PubSub_Socket_Render=/private/tmp/com.apple.launchd.11PeMdZFpD/Render

TERM_PROGRAM_VERSION=343.7

TERM_SESSION_ID=1FC9A988-7B1E-4869-95D3-5FF71F9942F7

USER=patrick

SSH_AUTH_SOCK=/private/tmp/com.apple.launchd.0PyXsYlSwi/Listeners

__CF_USER_TEXT_ENCODING=0x1F5:0x0:0x3

PATH=/opt/local/bin:/opt/local/sbin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin

PWD=/Users/patrick

DBUS_LAUNCHD_SESSION_BUS_SOCKET=/private/tmp/com.apple.launchd.dJkzL2MOo1/unix_domain_listener

LANG=de_DE.UTF-8

XPC_FLAGS=0x0

XPC_SERVICE_NAME=0

SHLVL=1

HOME=/Users/patrick

LOGNAME=patrick

DISPLAY=/private/tmp/com.apple.launchd.KWH6aSklFz/org.macosforge.xquartz:0

_=/usr/bin/env

I see that I only have a PATH variable set, but no PYTHONPATH. And /opt/local/bin seems to be the first in place?! With

Patricks-iMac:bin patrick$ pwd

/usr/bin

Patricks-iMac:bin patrick$ ./py

pydoc             python            python2.6-config  pythonw

pydoc2.6          python-config     python2.7         pythonw2.6

pydoc2.7          python2.6         python2.7-config  pythonw2.7

I see that I have even more python installs. Now I ran

Patricks-iMac:bin patrick$ which python

/usr/bin/python

Patricks-iMac:bin patrick$ port select --list python

Available versions for python:

none (active)

python26-apple

python27

python27-apple

So terminal normally would run "python" (didn’t look up the version). And MacPorts?

All this is what comes out of a clean OS X 10.9 install with an update to 10.10 and then a GNURadio install via MacPorts. Didn’t try yet to change one of the env variables or use the 'sudo port select python python27‘ command. What would your suggestions now be? What I don’t understand is why I have to tell MacPorts to use python2.7, if in fact I want to tell that to my terminal?

Thanks & Regards

Patrick

Am 08.09.2015 um 03:04 schrieb Michael Dickens <address@hidden>:

Hi Patrick - So what's happening is that with GRC, because it was
installed via MacPorts the MP version of Python is used. The terminal
only knows what you tell it via environment variables such as PYTHONPATH
(already suggested by Kevin Hofschröer) and PATH. In your case right
now, I'll bet that the PATH contains /usr/bin before /opt/local/bin (if
the latter is listed at all). If you do "which python", you'll see what
your shell is executing when you type "python" (again, better
/usr/bin/python [2.7 something]). Even if you add /opt/local/bin at the
start of PATH, you might still need to tell MP to select the version of
Python you want to use when you type "python" in the shell. You can list
the options port has via "port select --list python", and then select
Python 2.7 via "sudo port select python python27" if it not already
active. Combining this with making sure /opt/local/bin comes first in
PATH should solve your issue. Hope this helps! - MLD

On Mon, Sep 7, 2015, at 12:29 PM, Patrick Krämer wrote:

I installed GNURadio on a fresh machine with Mac OS X 10.10.5 via
MacPorts. I now have 2 Python installs in /usr/bin, python2.6 and
python2.7. Running flowgraphs with GRC is no problem. However, when
trying to run a .py-file from the terminal, as suggested in the guided
tutorial 3.1 („if else“) some modules are not found:

Patricks-iMac:work patrick$ python if_else_mod.py Traceback (most
recent call last):  File "if_else_mod.py", line 18, in <module>
from PyQt4 import Qt ImportError: No module named PyQt4


Why does it work, when running the file from GRC? Is my terminal using
the wrong python install? How could I change that? I also tried
changing the path variable on my notebook a few days ago, when I ran
into the same problem. But since I am new to python and the command
line I obviously made a mistake so that at some point I could not
start the GRC anymore. So your help is appreciated and needed.
Couldn’t find a similar question in the archives.

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