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Re: Variables in a loop, Newby question

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On 12/24/2013 11:27 AM, vanommen.robert@gmail.com wrote:
> Indeed this is code what I found on the web to read temperatures from
> 10 DS18B20 singlewire sensors.
> 
> My only programming (little) experience is VBA (Excel mostly).
> 

Definitely you'll want to learn python before you go much farther in
this project.  Check out the online docs, tutorials, etc.

> In this script i want to read the temperatures and make them
> available to other scripts.

Here's some almost runnable code that might help you get down the right
track.  You'll have to fill in some of the stuff.

temperatures.py:
import time
sensorids = [...] #fill in these with your ids

def _read_sensor(id):
  # open /sys/bus/w1/deevices/id/slave
  text = ''
  while text.split("\n")[0].find("YES") == -1:
    tfile = open("/sys/bus/w1/devices/"+ id +"/w1_slave")
    text = tfile.read()
    tfile.close()
    time.sleep(0.1)
  temperaturedata = text.split("\n")[1].split(" ")[9]it(" ")[9]
  temperature = float(temperaturedata [2:]) / 1000
  return temperature

def get_temperatures():
  # not using list comprehensions but we could
  temps = []
  for sensor in sensorids:
    temps.append(_read_sensor(sensor))

Then in your other python modules (scripts):

import temperatures

print temperatures.get_temperatures() # should print a list

Hope this gives you a bit of structure you can use.  All the code you
need to fill in can come from the code you posted previously.

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Variables in a loop, Newby question vanommen.robert@gmail.com - 2013-12-24 08:07 -0800
  Re: Variables in a loop, Newby question Joel Goldstick <joel.goldstick@gmail.com> - 2013-12-24 11:20 -0500
  Re: Variables in a loop, Newby question "Tobias M." <tm@tobix.eu> - 2013-12-24 17:24 +0100
  Re: Variables in a loop, Newby question Peter Otten <__peter__@web.de> - 2013-12-24 17:29 +0100
  Re: Variables in a loop, Newby question bob gailer <bgailer@gmail.com> - 2013-12-24 12:26 -0500
  Re: Variables in a loop, Newby question vanommen.robert@gmail.com - 2013-12-24 09:54 -0800
    Re: Variables in a loop, Newby question Joel Goldstick <joel.goldstick@gmail.com> - 2013-12-24 13:10 -0500
    Re: Variables in a loop, Newby question Dave Angel <davea@davea.name> - 2013-12-24 13:42 -0500
    Re: Variables in a loop, Newby question Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-12-25 13:35 -0500
  Re: Variables in a loop, Newby question vanommen.robert@gmail.com - 2013-12-24 10:27 -0800
    Re: Variables in a loop, Newby question Denis McMahon <denismfmcmahon@gmail.com> - 2013-12-25 02:54 +0000
      Re: Variables in a loop, Newby question Cameron Simpson <cs@zip.com.au> - 2013-12-25 16:42 +1100
        Re: Variables in a loop, Newby question Denis McMahon <denismfmcmahon@gmail.com> - 2013-12-25 15:27 +0000
          Re: Variables in a loop, Newby question Cameron Simpson <cs@zip.com.au> - 2013-12-26 12:01 +1100
          Re: Variables in a loop, Newby question Chris Angelico <rosuav@gmail.com> - 2013-12-26 12:35 +1100
            Re: Variables in a loop, Newby question Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-26 16:41 +1100
              Re: Variables in a loop, Newby question Dave Angel <davea@davea.name> - 2013-12-26 03:14 -0500
              Re: Variables in a loop, Newby question Chris Angelico <rosuav@gmail.com> - 2013-12-26 19:24 +1100
    Re: Variables in a loop, Newby question Peter Otten <__peter__@web.de> - 2013-12-25 15:52 +0100
    Re: Variables in a loop, Newby question Michael Torrie <torriem@gmail.com> - 2013-12-25 23:34 -0700
  Re: Variables in a loop, Newby question Larry Hudson <orgnut@yahoo.com> - 2013-12-25 00:13 -0800
  Re: Variables in a loop, Newby question vanommen.robert@gmail.com - 2013-12-27 00:53 -0800
    Re: Variables in a loop, Newby question Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-12-27 11:39 -0500

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