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Re: [newbie] trying socket as a replacement for nc

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  Re: [newbie] trying socket as a replacement for nc Jean-Michel Pichavant <jeanmichel@sequans.com> - 2013-12-16 17:44 +0100
    Re: [newbie] trying socket as a replacement for nc Jean Dubois <jeandubois314@gmail.com> - 2013-12-16 10:26 -0800
      Re: [newbie] trying socket as a replacement for nc Chris Angelico <rosuav@gmail.com> - 2013-12-17 05:35 +1100
      Re: [newbie] trying socket as a replacement for nc Dave Angel <davea@davea.name> - 2013-12-16 13:42 -0500

#62076 — Re: [newbie] trying socket as a replacement for nc

> This is what I got using telnet:
> [jean:~] $ telnet 10.128.59.63 7000
> Trying 10.128.59.63...
> Connected to 10.128.59.63.
> Escape character is '^]'.
> *IDN?
> KEITHLEY INSTRUMENTS INC.,MODEL 2425,1078209,C32   Oct  4 2010
> 14:20:11/A02  /E/
>                                                                  H
> 
> after pressing CTRL-ALT-ALTGR-] I get this:
> ^[^]
> after which I get the telnet-prompt
> >telnet
> and I can quit telnet by entering quit
> 
> 
> kind regards,
> jean
> --
> https://mail.python.org/mailman/listinfo/python-list


Looks like you don't have any prompt.
Try something simple first:

import telnetlib
host = '10.128.59.63'
port = 7000
t = Telnet(host, port)

def flush()
  t.read_very_eager()

def sendCmd(cmd)
  t.write('%s\n' % cmd)
  return flush()

flush()
print sendCmd('*IDN?')
print sendCmd('*OPC?')


JM


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#62088

Op maandag 16 december 2013 17:44:31 UTC+1 schreef Jean-Michel Pichavant:
> > This is what I got using telnet:
> > [jean:~] $ telnet 10.128.59.63 7000
> > Trying 10.128.59.63...
> > Connected to 10.128.59.63.
> > Escape character is '^]'.
> > *IDN?
> > KEITHLEY INSTRUMENTS INC.,MODEL 2425,1078209,C32   Oct  4 2010
> > 14:20:11/A02  /E/
> >                                                                  H
> > 
> > after pressing CTRL-ALT-ALTGR-] I get this:
> > ^[^]
> > after which I get the telnet-prompt
> > >telnet
> > and I can quit telnet by entering quit
> > 
> > 
> > kind regards,
> > jean
> > --
> > https://mail.python.org/mailman/listinfo/python-list
>
> Looks like you don't have any prompt.
> Try something simple first:
> import telnetlib
> host = '10.128.59.63'
> port = 7000
> t = Telnet(host, port)
> def flush()
>   t.read_very_eager()
> def sendCmd(cmd)
>   t.write('%s\n' % cmd)
>   return flush()
> flush()
> print sendCmd('*IDN?')
> print sendCmd('*OPC?')
Still no success:
jean@mantec:~$ ./test.py 
  File "./test.py", line 7
    def flush()
              ^
SyntaxError: invalid syntax


Tried it both with python2 and python3, same error...

kind regards,
jean

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#62089

On Tue, Dec 17, 2013 at 5:26 AM, Jean Dubois <jeandubois314@gmail.com> wrote:
>> Try something simple first:
>> import telnetlib
>> host = '10.128.59.63'
>> port = 7000
>> t = Telnet(host, port)
>> def flush()
>>   t.read_very_eager()
>> def sendCmd(cmd)
>>   t.write('%s\n' % cmd)
>>   return flush()
>> flush()
>> print sendCmd('*IDN?')
>> print sendCmd('*OPC?')
> Still no success:
> jean@mantec:~$ ./test.py
>   File "./test.py", line 7
>     def flush()
>               ^
> SyntaxError: invalid syntax
>
>
> Tried it both with python2 and python3, same error...

Folks, the OP isn't an expert. Please test your scripts before posting!

I don't have everything I need to test this fully, but here's a
variant of the above that's at least syntactically correct:

from telnetlib import *
host = '10.128.59.63'
port = 7000
t = Telnet(host, port)
def flush():
  t.read_very_eager()
def sendCmd(cmd):
  t.write('%s\n' % cmd)
  return flush()
flush()
print sendCmd('*IDN?')
print sendCmd('*OPC?')

It's written for Python 2, so use that interpreter.

ChrisA

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#62091

On Mon, 16 Dec 2013 10:26:14 -0800 (PST), Jean Dubois 
<jeandubois314@gmail.com> wrote:


>   File "./test.py", line 7
>     def flush()
>               ^
> SyntaxError: invalid syntax

A definition line needs to end with a colon (fix the other as well)

-- 
DaveA

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