Python settings

i have two versions of python on my computer. One is a version that came with the developer(programming) tools, it is MacPython 2.5.2.
the other version i downloaded from the web. when i go into terminal i can now import scripts that i have in a folder called python in my home directory. the reason i can import these scripts is because i added a line to my .bash_profile file which was a hidden file in my home directory. I added the following line:
$ export PYTHONPATH=.:$HOME/python:$PYTHONPATH
one of my problems was that i left the $ in the line when i went to add it. i believe the dollar sign represents the prompt in a bash shell. i removed it and now i am able to import scripts when i run python from terminal. My question is why does the other version, which is in my dock, and in my Applications folder, not import my scripts. I was told that i should check the settings for the version of python which i downloaded from the internet, but am unsure of how to go about doing this. any help would be appreciated.

jamesapp wrote:
i have two versions of python on my computer. One is a version that came with the developer(programming) tools, it is MacPython 2.5.2.
What version of OS X are you running? Which version of the Developer Tools do you have? What makes you think MacPython was installed as part of the Developer Tools package?
the other version i downloaded from the web.
Where? Which package?
when i go into terminal i can now import scripts that i have in a folder called python in my home directory. the reason i can import these scripts is because i added a line to my .bash_profile file which was a hidden file in my home directory. I added the following line:
$ export PYTHONPATH=.:$HOME/python:$PYTHONPATH
one of my problems was that i left the $ in the line when i went to add it. i believe the dollar sign represents the prompt in a bash shell.
It can. By default you see a dollar sign as the last character in your prompt.
i removed it and now i am able to import scripts when i run python from terminal. My question is why does the other version, which is in my dock, and in my Applications folder, not import my scripts. I was told that i should check the settings for the version of python which i downloaded from the internet, but am unsure of how to go about doing this. any help would be appreciated.
I think you are confusing different versions of python with different interfaces for working with python. You do not have one version for Terminal and one version for the application in your Dock. Depending on your settings, these may well access the same version, though you could also set things up so they did not.
In any case, the answer to your question is that .bash_profile is read when you start a login bash shell e.g. when you fire up Terminal if bash is your default shell. The GUI application doesn't read this, so it does not read the environmental variables you set there. Depending on the application, you may be able to set PYTHONPATH via its preferences or you may need to set it in a special file in an invisible sub-directory of your home: .MacOSX/environment.plist. This is a property list file and must be kept in that format. It is a bad idea to edit this file unless you know what you are doing because all applications inherit the variables you set here and that can be dangerous. If the file is not edited correctly, it will also create lots of errors - I'm not entirely sure what the implications of those might be.
Note that you should check this information is still correct if you are using Leopard as I have not used a Leopard system.
- cfr

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Thanks,
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Solved!
Go to Solution.

This forum is for LabVIEW questions.

Python 2.5.1 in Arch

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This section applies only to people building Ardour 2.0 (not 0.99.X) and only for Linux/x86 platforms. At this time, you cannot run VST plugins in Ardour on OS X or Linux x86_64 platforms. Note that if you use your x86_64 system in 32 bit mode, that counts as x86, and things will work as expected.
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Where to install VST plugins
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Last edited by funkmuscle (2007-05-24 13:10:46)

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Python Conneciton to Oracle DB

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UPDATED
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- summary line
- horizontal output
Last edited by Majkhii (2008-06-07 21:55:33)

Ok, I think the script is working now. Since I used my local copy to fix the script I'll list the changes. These are changes I've made every now and then, I apologize for not posting some of these changes earlier.
Changes:
- 'pacman -Sup' changed to 'pacman -Qu'
- This takes out the need for checking lck files, the whole sleep/try again code is gone now
- Even when pacman -Sup was runnable as user it created a system wide lock on the pacman db, the change to root is a good thing IMO.
- changed '/var/lib/pacman/' to '/var/lib/pacman/sync' (also means this will no longer work with the older pacman, will implement backwards compatibility if requested)
- Added show "onlyImportant" option (Never actually used this, might be buggy)
- ipkgTemplate no longer dependent on pkgTemplate.
- packages with equal 'rating' are sorted based on 'size'
- if package name is wider then width, it is cropped and followed with a '...'
Customization differences:
- Width = 52 (instead of 47)
To do:
- I'd like to break the script down into functions to make maintainability easier.
- If anyone has any feature requests post it here or email me.
EDIT:
- changed "Targets:" to do a regex search for all the languages.
- except for hu.po, can't figure out how to extract that, if anyone knows please tell me. I get "Clok:"
conkypac.py:
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Description: Python script for notifying archlinux updates.
# Usage: Put shell script with command 'pacman -Sy' into /etc/cron.hourly/
# Conky: e.g. put in conky '${texeci 1800 python path/to/this/file}'
# Author: Michal Orlik <[email protected]>, sabooky <[email protected]>
# SETTINGS - main settings
# set this to True if you just want one summary line (True/False)
brief = False
# number of packages to display (0 = display all)
num_of_pkgs = 5
#show only important packages
onlyImportant = False
# OPTIONAL SETTINGS
# PACKAGE RATING - prioritize packages by rating
# pkgs will be sorted by rating. pkg rating = ratePkg + rateRepo for that pkg
# pkg (default=0, wildcards accepted)
ratePkg = {
'kernel*':10,
'pacman':9,
'nvidia*':8,
# repo (default=0, wildcards accepted)
rateRepo = {
'core':5,
'extra':4,
'community':3,
'testing':2,
'unstable':1,
# at what point is a pkg considered "important"
iThresh = 5
# OUTPUT SETINGS - configure the output format
# change width of output
width = 52
# pkg template - this is how individual pkg info is displayed ('' = disabled)
# valid keywords - %(name)s, %(repo)s, %(size).2f, %(ver)s, %(rate)s
pkgTemplate = " %(repo)s/%(name)s %(ver)s"
# important pkg tempalte - same as above but for "important" pkgs
ipkgTemplate = " *!* %(repo)s/%(name)s %(ver)s"
# summary template - this is the summary line at the end
# valid keywords - %(numpkg)d, %(size).2f, %(inumpkg), %(isize).2f, %(pkgstring)s
summaryTemplate = " %(numpkg)d %(pkgstring)s"
# important summary template - same as above if "important" pkgs are found
isummaryTemplate = summaryTemplate + " (%(inumpkg)d important %(isize).2f MB)"
# pkg right column template - individual pkg right column
# valid keywords - same as pkgTemplate
pkgrightcolTemplate = "%(size).2f MB"
# important pkg right column template - same as above but for important pkgs
ipkgrightcolTemplate = pkgrightcolTemplate
# summary right column template - summay line right column
# valid keywords - same as summaryTemplate
summaryrightcolTemplate = "%(size).2f MB"
# important summary right column template - same as above if "important" pkgs are found
isummaryrightcolTemplate = summaryrightcolTemplate
# seperator before summary ('' = disabled)
block = '-' * 12
# up to date msg
u2d = ' Your system is up-to-date'
import subprocess
import re
from time import sleep
from glob import glob
from fnmatch import fnmatch
program = []
pkgs = []
url = None
def runpacman():
"""runs pacman returning the popen object"""
p = subprocess.Popen(['pacman','-Qu'],
stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
return p
def cmpPkgs(x, y):
"""Compares packages for sorting"""
if x['rate']==y['rate']:
return cmp(x['size'], y['size'])
else:
return x['rate']-y['rate']
if onlyImportant:
pkgTemplate, pkgrightcolTemplate = '',''
p = runpacman()
#parse pacmans output
for line in p.stdout:
if re.match('(Cíle|Pakete|Targets|Se procesará|Cibles|Pacchetti|'
'Celuje|Pacotes|Цели):', line):
program = line.split()[1:]
for line in p.stdout:
if not line.strip():
break
program += line.split()
for item in program:
pkg = {}
desc_path = False
desc_paths = glob('/var/lib/pacman/sync/*/%s'%item)
if not desc_path:
desc_path = desc_paths[0] + '/desc'
pkg['repo'] = desc_path.split('/')[-3]
desc = open(desc_path).readlines()
checkName = 0
checkSize = 0
checkVersion = 0
for index, line in enumerate(desc):
if line=='%NAME%\n' and checkName == 0:
pkgName = desc[index+1].strip()
pkg['name'] = pkgName
checkName = 1
if line=='%CSIZE%\n' and checkSize == 0:
pkgSize = int(desc[index+1].strip())
pkg['size'] = pkgSize / 1024.0 / 1024
checkSize = 1
if line=='%VERSION%\n' and checkVersion == 0:
pkgVersion = desc[index+1].strip()
pkg['ver'] = pkgVersion
checkVersion = 1
pkgRate = [v for x, v in ratePkg.iteritems()
if fnmatch(pkg['name'], x)]
repoRate = [v for x, v in rateRepo.iteritems()
if fnmatch(pkg['repo'], x)]
pkg['rate'] = sum(pkgRate + repoRate)
pkgs.append(pkg)
# echo list of pkgs
if pkgs:
summary = {}
summary['numpkg'] = len(pkgs)
summary['size'] = sum([x['size'] for x in pkgs])
if summary['numpkg'] == 1:
summary['pkgstring'] = 'package'
else:
summary['pkgstring'] = 'packages'
summary['inumpkg'] = 0
summary['isize'] = 0
lines = []
pkgs.sort(cmpPkgs, reverse=True)
for pkg in pkgs:
important = False
if pkg['rate'] >= iThresh:
summary['isize'] += pkg['size']
summary['inumpkg'] += 1
pkgString = ipkgTemplate % pkg
sizeValueString = ipkgrightcolTemplate % pkg
else:
pkgString = pkgTemplate % pkg
sizeValueString = pkgrightcolTemplate % pkg
if len(pkgString)+len(sizeValueString)>width-1:
pkgString = pkgString[:width-len(sizeValueString)-4]+'...'
line = pkgString.ljust(width - len(sizeValueString)) + sizeValueString
if line.strip():
lines.append(line)
if not brief:
if num_of_pkgs:
print '\n'.join(lines[:num_of_pkgs])
else:
print '\n'.join(lines)
if block:
print block.rjust(width)
if summary['inumpkg']:
overallString = isummaryTemplate % summary
overallMBString = summaryrightcolTemplate % summary
else:
overallString = summaryTemplate % summary
overallMBString = isummaryrightcolTemplate % summary
summaryline = overallString.ljust(width - len(overallMBString)) \
+ overallMBString
if summaryline:
print summaryline
else:
print u2d
Last edited by sabooky (2008-01-16 16:41:25)

Error starting the GNOME Settings Daemon

After a full system upgrade of about 500mb, I now get this error when Gnome is started. Also, im kinda new to this...
"There was an error starting the GNOME Settings Daemon.
Some things, such as themes, sounds, or background settings may not work correctly.
The last error message was:
The name org.gnome.SettingsDaemon was not provided by any .service files
GNOME will still try to restart the Settings Daemon next time you log in."
The things is, my background and other desktop stuff is still in their place. But my keyboard has gone back to its default setting and the drivers for my wireless isnt getting loaded. I also have problems playing music with Amarok.
After the full upgrade of my system I installed compiz-fusion and AWM, but they arent started when i boot. Could they be a problem?
I looked at some issues with similar error messages, where they downgraded the gnome-settings-tools, how do I do that?

Hi there!
I copied the from where pacman generates the fallback version before starting to upgrade.
[2008-05-30 18:44] :: Begin build
[2008-05-30 18:44] :: Parsing hook [base]
[2008-05-30 18:44] :: Parsing hook [udev]
[2008-05-30 18:44] :: Parsing hook [autodetect]
[2008-05-30 18:44] :: Parsing hook [pata]
[2008-05-30 18:44] :: Parsing hook [scsi]
[2008-05-30 18:44] :: Parsing hook [sata]
[2008-05-30 18:44] :: Parsing hook [usbinput]
[2008-05-30 18:44] :: Parsing hook [keymap]
[2008-05-30 18:44] :: Parsing hook [filesystems]
[2008-05-30 18:44] :: Generating module dependencies
[2008-05-30 18:44] :: Generating image '/boot/kernel26.img'...SUCCESS
[2008-05-30 18:44] ==> SUCCESS
[2008-05-30 18:44] ==> Building image "fallback"
[2008-05-30 18:44] ==> Running command: /sbin/mkinitcpio -k 2.6.25-ARCH -c /etc/mkinitcpio.conf -g /boot/kernel26-fallback.img -S autodetect
[2008-05-30 18:44] :: Begin build
[2008-05-30 18:44] :: Parsing hook [base]
[2008-05-30 18:44] :: Parsing hook [udev]
[2008-05-30 18:44] :: Parsing hook [pata]
[2008-05-30 18:44] :: Parsing hook [scsi]
[2008-05-30 18:44] :: Parsing hook [sata]
[2008-05-30 18:44] :: Parsing hook [usbinput]
[2008-05-30 18:44] :: Parsing hook [keymap]
[2008-05-30 18:44] :: Parsing hook [filesystems]
[2008-05-30 18:44] :: Generating module dependencies
[2008-05-30 18:44] :: Generating image '/boot/kernel26-fallback.img'...SUCCESS
[2008-05-30 18:44] ==> SUCCESS
[2008-05-30 18:44] upgraded kernel26 (2.6.24.1-2 -> 2.6.25.4-1)
[2008-05-30 18:44] upgraded ipw3945 (1.2.2-7 -> 1.2.2-10)
[2008-05-30 18:44] upgraded libdvdnav (0.1.10-2 -> 0.1.10-3)
[2008-05-30 18:44] upgraded libebml (0.7.7-1 -> 0.7.8-1)
[2008-05-30 18:44] upgraded libgail-gnome (1.20.0-1 -> 1.20.0-2)
[2008-05-30 18:44] upgraded libnetworkmanager (0.6.5-1 -> 0.6.6-1)
[2008-05-30 18:44] upgraded libnl (1.0pre6-1 -> 1.1-1)
[2008-05-30 18:44] upgraded libsamplerate (0.1.2-4 -> 0.1.3-1)
[2008-05-30 18:44] upgraded licenses (2.3-1 -> 2.4-1)
[2008-05-30 18:44] upgraded lvm2 (2.02.33-1 -> 2.02.36-1)
[2008-05-30 18:44] upgraded man-pages (2.77-1 -> 2.79-1)
[2008-05-30 18:45] Updating font cache... done.
[2008-05-30 18:45] upgraded ttf-dejavu (2.23-1 -> 2.25-1)
[2008-05-30 18:45] upgraded mplayer (1.0rc2-2.1 -> 1.0rc2-3)
[2008-05-30 18:45] upgraded nautilus-cd-burner (2.20.0-1 -> 2.22.1-1)
[2008-05-30 18:45] upgraded networkmanager (0.6.5-3 -> 0.6.6-1)
[2008-05-30 18:45] In order to use the new nvidia module, exit Xserver and unload it manually.
[2008-05-30 18:45] upgraded nvidia (169.09-2 -> 169.12-4)
[2008-05-30 18:45] upgraded opera (9.25-2 -> 9.27-1)
[2008-05-30 18:45] upgraded orca (2.20.3-1 -> 2.22.0-1)
[2008-05-30 18:45] upgraded pcmciautils (014-3 -> 014-4)
[2008-05-30 18:45] upgraded perlxml (2.34-4 -> 2.36-1)
[2008-05-30 18:45] upgraded perl-xml-simple (2.18-1 -> 2.18-2)
[2008-05-30 18:45] upgraded printproto (1.0.3-1 -> 1.0.4-1)
[2008-05-30 18:45] upgraded pycairo (1.4.0-3 -> 1.4.12-1)
[2008-05-30 18:45] upgraded qt (4.3.3-4 -> 4.3.4-1)
[2008-05-30 18:46] upgraded seahorse (2.20.3-1 -> 2.22.1-1)
[2008-05-30 18:46] upgraded sound-juicer (2.20.1-1 -> 2.22.0-1)
[2008-05-30 18:46] upgraded tar (1.19-2 -> 1.20-2)
[2008-05-30 18:46] installed ndesk-dbus (0.6.0-1)
[2008-05-30 18:46] installed ndesk-dbus-glib (0.4.1-1)
[2008-05-30 18:46] installed mono-addins (0.3.1-2)
[2008-05-30 18:46] upgraded tomboy (0.8.1-1 -> 0.10.1-1)
[2008-05-30 18:46] upgraded totem-plparser (2.21.91-1 -> 2.22.2-1)
[2008-05-30 18:46] installed libepc (0.3.5-1)
[2008-05-30 18:46] installed python-elementtree (1.2.6-2)
[2008-05-30 18:46] installed python-gdata (1.0.11.1-1)
[2008-05-30 18:46]
[2008-05-30 18:46] ==> Totem has been built with GStreamer. By default, only plugins from
[2008-05-30 18:46] ==> gst-plugins-good and gst-plugins-base are installed.
[2008-05-30 18:46] ==>
[2008-05-30 18:46] ==> To play additional media formats, more plugins are available from
[2008-05-30 18:46] ==> gstreamer0.10-ugly-plugins, gstreamer0.10-bad-plugins
[2008-05-30 18:46] ==> and gstreamer0.10-ffmpeg packages.
[2008-05-30 18:46] ==>
[2008-05-30 18:46] ==> There's also a xine build of Totem available, install totem-xine instead
[2008-05-30 18:46] ==> of this package if you want xine to play your media files.
[2008-05-30 18:46]
[2008-05-30 18:46] upgraded totem (2.20.1-3 -> 2.22.2-1)
[2008-05-30 18:46] upgraded totem-plugin (2.20.1-3 -> 2.22.0-1)
[2008-05-30 18:46] Remove vi related symlinks ...
[2008-05-30 18:46] Create vi related symlinks...
[2008-05-30 18:46] Updating vi help tags...done.
[2008-05-30 18:46] upgraded vi (7.1.228-1 -> 7.1.267-1)
[2008-05-30 18:46] upgraded vino (2.20.1-1 -> 2.22.1-1)
[2008-05-30 18:46] upgraded vlc (0.8.6d-2 -> 0.8.6f-3)
[2008-05-30 18:46] upgraded wget (1.11-1 -> 1.11.2-1)
[2008-05-30 18:47] upgraded xfsprogs (2.9.4-2 -> 2.9.7-1)
[2008-05-30 18:47] upgraded xorg-apps (1.0.3-2 -> 1.0.3-3)
[2008-05-30 18:47] upgraded xproto (7.0.11-1 -> 7.0.12-1)
[2008-05-30 18:47] upgraded xtrans (1.0.4-1 -> 1.2-1)
[2008-05-30 18:47] upgraded zenity (2.20.1-1 -> 2.22.1-1)
Last edited by derelic (2008-05-31 16:17:58)

Python tool for keeping track of strings

I wrote this just now. It associates keys to strings; basically a centralized means of storing values.
#!/usr/bin/env python
from cPickle import load, dump
from sys import argv
from os.path import expanduser
strings_file = expanduser('~/lib/cfg-strings')
try:
with open(strings_file) as f:
strings = load(f)
except:
strings = {}
if len(argv) < 2:
print('''usage:
{0} dump
{0} get <key>
{0} del <key>
{0} set <key> <val>'''.format(argv[0]))
elif len(argv) == 2:
if argv[1] == 'dump':
for k in strings.keys(): print(k + ': ' + strings[k])
elif len(argv) == 3:
if argv[1] == 'get':
if argv[2] in strings.keys():
print(strings[argv[2]])
elif argv[1] == 'del':
if argv[2] in strings.keys():
del(strings[argv[2]])
elif len(argv) == 4:
if argv[1] == 'set':
strings[argv[2]] = argv[3]
with open(strings_file, 'w') as f:
dump(strings, f)
Replace '~/lib/cfg-strings' with your preferred destination for the pickle file.
As an example, I have this at the end of my .xinitrc:
exec $(cfg get wm)
so all I have to do is type "cfg set wm ..." to change my window manager. Note that on my system, the script is named 'cfg', so you'll want to change that depending on what you call it.
To be honest, though, I think everyone has written something like this at least once.
Last edited by Peasantoid (2010-01-18 01:29:14)

Nice idea Peasantoid! I have wanted something similar for myself for a while now however wasn't exactly sure how best to do this. Here's my version. It is based on yours though as I prefer plain text for the settings file so I used JSON.
#!/usr/bin/python
import json
import os.path
import sys
SETTINGS_FILE = os.path.expanduser('~/configs/settings.json')
def dump(s):
print json.dumps(s, sort_keys = True, indent=2)
def get(s, key):
if s.has_key(key):
print s[key]
def set(s, key, val):
s[key] = val
save(s)
def delete(s, key):
if s.has_key(key):
del s[key]
save(s)
def save(s):
json.dump(s, open(SETTINGS_FILE, 'w'))
def usage():
str = [
"usage: %s dump (default)",
" %s get <key>",
" %s set <key> <val>",
" %s delete <key>"
for x in str:
print x % sys.argv[0]
def main():
try:
settings = json.load(open(SETTINGS_FILE))
except:
settings = {}
a = sys.argv
n = len(a)
if n == 1 or (n == 2 and a[1] == 'dump'):
dump(settings)
elif n == 3 and a[1] == 'get':
get(settings, a[2])
elif n == 3 and a[1] == 'delete':
delete(settings, a[2])
elif n == 4 and a[1] == 'set':
set(settings, a[2], a[3])
else:
usage()
if __name__ == "__main__":
main()

Python: no module named struct

Ever since I performed an update (for x86_64, if that makes a difference) this afternoon, beryl-settings has failed to start for me. It always fails with this message:
Could not find platform dependent libraries <exec_prefix>
Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
Traceback (most recent call last):
File "/usr/bin/beryl-settings", line 12, in ?
import gettext
File "/usr/lib/python2.4/gettext.py", line 49, in ?
import locale, copy, os, re, struct, sys
ImportError: No module named struct
/usr/lib/python2.4/gettext.py belongs to the python package, so I'm supposing the breakage has something to do with that? Pacman says that I currently have python-2.4.4-1.1 installed.

When I try to run beryl-manager the next error occurs.
Could not find platform independent libraries <prefix>
Could not find platform dependent libraries <exec_prefix>
Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
'import site' failed; use -v for traceback
Traceback (most recent call last):
File "/usr/bin/beryl-settings", line 2, in ?
import berylsettings
ImportError: No module named berylsettings

[solved] Cannot launch cinnamon-settings - missing image module

Hello,
When I try to run `cinnamon-settings` it fails with the following message:
[orschiro@thinkpad ~]$ cinnamon-settings
No module named Image
However, I seem to have installed all relevant packages:
:: python2-imaging and python2-pillow are in conflict (python-imaging). Remove python2-pillow? [y/N] y
error: failed to prepare transaction (could not satisfy dependencies)
:: cinnamon: requires python2-pillow
Any ideas?
Last edited by orschiro (2013-11-09 07:51:01)

orschiro wrote:
Hello,
When I try to run `cinnamon-settings` it fails with the following message:
[orschiro@thinkpad ~]$ cinnamon-settings
No module named Image
It may be that there is a file missing in /usr/lib/cinnamon-settings/modules, or code missing from one of the files in that folder. I honestly couldn't say because development is going so fast.
@orschiro: Which versions of the cinnamon and cinnamon-settings-daemon packages do you have installed?
@Karol: It may be unrelated seeing as pam is a separate package to cinnamon-settings-daemon, but I wouldn't rule it out just yet.

Python script in dasylab using single input multiple output

Hello
For a project, I would like to use the python scripting module of dasylab 13. I got it to work for simple functions such as y=f(x), where i have one input and one output.
The next step in order to get to where i want to be with my script is using a single input and generating two outputs.
I defined it in the "predefined settings" that pops up first. The module created looked as it should, having one input and two outputs. However, when I wanted to edit the script (and double clicked the module) the module went back to having one input and one output.
I searched the help and found the section "channel assignment constants". There describe the various constants, which should have been set in predefined settings. In my case it is CR_1_2.
It also states to setup the meta data in the SetupFifo tab.
Now here is my problem: How should i change the SetupFifo tab?
I tried the command:
self.SetChannelRelation(channel_no, Ly.CR_1_2)
Unfotunately this didn't work, which doesn't supprise me, as I made this command up, based on the examples in the help file on the SetupFifo tab. Those are, however, for SetChannelFlags and SetChannelType, which I don't think I need yet...
Has anyone experienced a similar problem? I also installed a trial version on another computer to check if it works there (it doesn't).
Or does someone know a method to find out how to be able to change inputs and outputs the way i want?
Every help will be greatly appreciated.
Sincerely, Jarno

You do not need to set the channel relation for "simple" channel relation like 1:2, 2:1, etc.
Just set the relation you want in the configration dialog that open when you drop a script module into to worksheet.
The channel relation and their python constants have nothing to do with the amount of inputs and outputs of a script module.
The channel relation tells the "DASYLab core" how to guide meta data (channel names, units, etc) through a module.
In function "DlgInit" you have to tell DASYLab how many inputs and outputs your module should have.
Your module should have 2 outputs for each input: this combination of input and outputs is called a "channel".
Because one channel has 2 outputs, the module can have max. 8 channels only.
The dialog with the channelbar "thinks" in channels, but DASYLab "thinks" in connectors (connectors are inputs/outputs).
So, you are responsible to translate "channels" in "connectors" and vice versa
In DlgInit you can ask DASYLab about the amount of inputs and outputs.
self.NumInChannel <-- amout of connectors on modules left side
self.NumOutChannel <-- amount of connectors on the right side
self.DlgNumChannels <-- amount of activated channels in the dialog (something between 1 and DlgMaxChannels)
Your module's channels have 1 input, 2 outputs each, so you can write either
self.DlgNumChannels = self.NumOutChannel / 2
or
self.DlgNumChannels = self.NumInChannel
If the module has 3 input and 6 outputs, the dialog will get 3 channels.
In DlgOk you need to translate the amount of channels into the correct amount of connectors (inputs/outputs):
For "one channel = 1 input + 2 outputs" this is:
self.SetConnectors( self.DlgNumChannels, self.DlgNumChannels * 2 )
DlgInit
self.DlgNumChannels = self.NumInChannel
# or: self.DlgNumChannels = self.NumOutChannel / 2
self.DlgMaxChannels = 8 # or Ly.MAX_CHANNELS/2
DlgOk
self.SetConnectors( self.DlgNumChannels, self.DlgNumChannels * 2 )
M.Sc. Holger Wons | measX GmbH&Co. KG, Mönchengladbach, Germany | DASYLab, DIAdem, LabView --- Support, Projects, Training | Platinum National Instrument Alliance Partner | www.measx.com

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