date:20180109

Re: Python - getch() and kbhit()

2018-01-09 Thread Steve Litt

On Tue, 9 Jan 2018 10:36:51 +0200
Shlomo Solomon  wrote:

> Since import msvcrt in Python is Windows specific, I adapted some code
> I found to provide kbhit() and getch() in Python under Linux.
> 
> I'm attaching KBHIT.py which replaces msvcrt and a small program to
> demonstrate how to use it - KBHIT-test.py.
> 
> The KBHIT.py documentation includes usage instructions and also a link
> to the code I borrowed and (I hope) improved. 
> 
> 

I've been using the attached code in my UMENU2 program so menu choices
can be selected with a single keystroke and no Enter key necessary.
What you've added is kbhit() so you can do non-blocking keyboard reads,
and of course the ability to handle both Posix and Windows
transparently.

If I were to rewrite your KBHIT.py program, I'd rewrite it to carry a
lot less state. I'd get rid of _init_(), and I'd make getch(), kbhit()
and set_normal_term() class functions so the only reason for making it a
class is namespacing. The world's fastest typist is what,  200 wpm
which is about 3.1/second: There's plenty of time to go raw and then go
cooked for each character retrieved. It doesn't seem as efficient, but
the bottleneck is the typist and going raw then cooked on each
keystroke makes your code simpler, eliminates state, and probably
decreases the need for set_norm_term().

SteveT

Steve Litt 
December 2017 featured book: Thriving in Tough Times
http://www.troubleshooters.com/thrive

getch_unix.py
Description: Binary data
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Re: oVirt over CentOS or ovirt-node

2018-01-09 Thread Gilboa Davara

On Mon, Jan 8, 2018 at 10:48 PM, Rabin Yasharzadehe  wrote:
> Just wondering which OS used for the host, I was wondering if one version is
> more supported then the other.
>
> Thanks.
>
> --
> Rabin

Hello,

We've installed oVrit on stock CentOS 7 using the oVirt yum repositories.

- Gilboa


>
> On 8 January 2018 at 09:50, Gilboa Davara  wrote:
>>
>> On Tue, Jan 2, 2018 at 5:41 PM, Rabin Yasharzadehe  wrote:
>> >
>> > ovirt-node with version 4.1 gave a alot of problems with nfs shares
>> > but 4.2 did work much better "out of the box" after clean install (I was
>> > not
>> > able to upgrade from 4.1 to 4.2 with ovirt-nodes)
>> >
>> > so my question is basicly , if I'm looking to setup something for the
>> > long
>> > run, which I can extend and upgrade in the near future,
>> > which host platform should I choose ? ovirt-node or a simple CentOS7 ?
>> >
>> > Tx
>>
>> We're using 3-node oVirt 4.0.6 over GlusterFS cluster (w/ self hosted
>> engine) in production for long while now.
>> The system was installed by my IT manager from barebone (was
>> originally installed in the 3.6 days).
>> If you have specific questions I can forward them...
>>
>> - Gilboa
>
>

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Re: oVirt over CentOS or ovirt-node

2018-01-09 Thread Rabin Yasharzadehe

Hi Didi ... long time ... 


On 9 January 2018 at 16:00, Yedidyah Bar David  wrote:

> Hi Rabin :-),
>
> On Mon, Jan 8, 2018 at 10:48 PM, Rabin Yasharzadehe 
> wrote:
>
>> Just wondering which OS used for the host, I was wondering if one version
>> is more supported then the other.
>>
>
> Why not start a thread on us...@ovirt.org, then?
>

Yaniv all ready point me to the mailing list, I subscribed, but didn't have
time to post a question there yet.


> You might find this useful/interesting:
>
> http://lists.ovirt.org/pipermail/users/2017-April/081221.html
>
> Partial quote:
>
> - oVirt Node jumped from 7.1% on 3.6 survey to 19.9% in 4.1!
>
> So most people use CentOS, but some do use ovirt-node,
> and now more than in the past.
>

Thank you, the is exactly what i was looking for.

Right now I'm starting to play with ovirt which is more of POC for a small
setup,
but as you may know, some setups will become "production"  if the POC works
and I was looking around to see which platform is more popular, and where
can i find more support
and which host-os have a better upgrade path




> Both are supported. I'd say node is more for people that prefer
> pre-made appliances, while CentOS is for people that want the
> most control.
>
> If you consider node, you might want to read e.g.:
>
> https://www.ovirt.org/node/faq/
> https://www.ovirt.org/develop/release-management/features/
> node/node-next-persistence/
>
> Disclaimer: I am an oVirt developer.
>
> Best regards,
>

Thanks for the pointers, and the survey link
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Re: oVirt over CentOS or ovirt-node

2018-01-09 Thread Yedidyah Bar David

Hi Rabin :-),

On Mon, Jan 8, 2018 at 10:48 PM, Rabin Yasharzadehe  wrote:

> Just wondering which OS used for the host, I was wondering if one version
> is more supported then the other.
>

Why not start a thread on us...@ovirt.org, then?

You might find this useful/interesting:

http://lists.ovirt.org/pipermail/users/2017-April/081221.html

Partial quote:

- oVirt Node jumped from 7.1% on 3.6 survey to 19.9% in 4.1!

So most people use CentOS, but some do use ovirt-node,
and now more than in the past.

Both are supported. I'd say node is more for people that prefer
pre-made appliances, while CentOS is for people that want the
most control.

If you consider node, you might want to read e.g.:

https://www.ovirt.org/node/faq/
https://www.ovirt.org/develop/release-management/features/
node/node-next-persistence/

Disclaimer: I am an oVirt developer.

Best regards,

>
> --
> Rabin
>
> On 8 January 2018 at 09:50, Gilboa Davara  wrote:
>
>> On Tue, Jan 2, 2018 at 5:41 PM, Rabin Yasharzadehe 
>> wrote:
>> >
>> > ovirt-node with version 4.1 gave a alot of problems with nfs shares
>> > but 4.2 did work much better "out of the box" after clean install (I
>> was not
>> > able to upgrade from 4.1 to 4.2 with ovirt-nodes)
>> >
>> > so my question is basicly , if I'm looking to setup something for the
>> long
>> > run, which I can extend and upgrade in the near future,
>> > which host platform should I choose ? ovirt-node or a simple CentOS7 ?
>> >
>> > Tx
>>
>> We're using 3-node oVirt 4.0.6 over GlusterFS cluster (w/ self hosted
>> engine) in production for long while now.
>> The system was installed by my IT manager from barebone (was
>> originally installed in the 3.6 days).
>> If you have specific questions I can forward them...
>>
>> - Gilboa
>>
>
>
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>
>
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Re: Python - getch() and kbhit()

2018-01-09 Thread Shlomi Fish

thanks for the update, Shlomo.

On Tue, Jan 9, 2018 at 12:40 PM, Shlomo Solomon 
wrote:

> Hi Shlomi,
> Thanks for your feedback - my reply below.
>
> On Tue, 9 Jan 2018 12:21:51 +0200
> Shlomi Fish  wrote:
>
> > Hi Shlomo,
> >
> > On Tue, Jan 9, 2018 at 10:36 AM, Shlomo Solomon
> >  wrote:
> >
> > > Since import msvcrt in Python is Windows specific, I adapted some
> > > code I found to provide kbhit() and getch() in Python under Linux.
> > >
> > > I'm attaching KBHIT.py which replaces msvcrt and a small program to
> > > demonstrate how to use it - KBHIT-test.py.
> > >
> > > The KBHIT.py documentation includes usage instructions and also a
> > > link to the code I borrowed and (I hope) improved.
> > >
> > >
> > thanks for your contribution.
> >
> > some comments:
> >
> > 1. What is the licence of the code? See
> > https://www.mail-archive.com/perl6-users@perl.org/msg04541.html .
>
> Note the following statement in the code (was already in the code I
> "borrowed" and I felt it would be wrong/dis-honest to change it):
> This program is free software: you can redistribute it and/or modify
> it under the terms of the GNU Lesser General Public License as
> published by the Free Software Foundation, either version 3 of the
> License, or (at your option) any later version.
>
> >
> > 2. Please use a PyPI-like distribution format, see
> > https://github.com/ofek/hatch or
> > https://github.com/audreyr/cookiecutter-pypackage .
>
> You're probably right, but since this was just something I hacked
> together to solve a specific problem I was having, I didn't really see
> the need to "formalize" it.
>
> >
> > 3. For more best practices, see
> > https://github.com/shlomif/Freenode-programming-channel-
> FAQ/blob/master/FAQ.mdwn#what-are-some-best-practices-in-
> programming-that-i-should-adopt
> > .
> >
> > 4. -test.py should be -example.py
> >
> >
> > >
> > > --
> > > Shlomo Solomon
> > > http://the-solomons.net
> > > Claws Mail 3.11.1 - KDE 4.14.30 - Dolphin 4.14.3 - LINUX Mageia 5
> > > ___
> > > Linux-il mailing list
> > > Linux-il@cs.huji.ac.il
> > > http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
> > >
> > >
> >
> >
>
>
>
> --
> Shlomo Solomon
> http://the-solomons.net
> Claws Mail 3.11.1 - KDE 4.14.30 - Dolphin 4.14.3 - LINUX Mageia 5
>



-- 
Shlomi Fish http://www.shlomifish.org/

You can never truly appreciate The Gilmore Girls until you've watched it in
the original Klingon.

Please reply to list if it's a mailing list post - http://shlom.in/reply .
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Re: Python - getch() and kbhit()

2018-01-09 Thread Shlomo Solomon

Hi Shlomi,
Thanks for your feedback - my reply below.

On Tue, 9 Jan 2018 12:21:51 +0200
Shlomi Fish  wrote:

> Hi Shlomo,
> 
> On Tue, Jan 9, 2018 at 10:36 AM, Shlomo Solomon
>  wrote:
> 
> > Since import msvcrt in Python is Windows specific, I adapted some
> > code I found to provide kbhit() and getch() in Python under Linux.
> >
> > I'm attaching KBHIT.py which replaces msvcrt and a small program to
> > demonstrate how to use it - KBHIT-test.py.
> >
> > The KBHIT.py documentation includes usage instructions and also a
> > link to the code I borrowed and (I hope) improved.
> >
> >
> thanks for your contribution.
> 
> some comments:
> 
> 1. What is the licence of the code? See
> https://www.mail-archive.com/perl6-users@perl.org/msg04541.html .

Note the following statement in the code (was already in the code I
"borrowed" and I felt it would be wrong/dis-honest to change it):
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as 
published by the Free Software Foundation, either version 3 of the 
License, or (at your option) any later version.

> 
> 2. Please use a PyPI-like distribution format, see
> https://github.com/ofek/hatch or
> https://github.com/audreyr/cookiecutter-pypackage .

You're probably right, but since this was just something I hacked
together to solve a specific problem I was having, I didn't really see
the need to "formalize" it.

> 
> 3. For more best practices, see
> https://github.com/shlomif/Freenode-programming-channel-FAQ/blob/master/FAQ.mdwn#what-are-some-best-practices-in-programming-that-i-should-adopt
> .
> 
> 4. -test.py should be -example.py
> 
> 
> >
> > --
> > Shlomo Solomon
> > http://the-solomons.net
> > Claws Mail 3.11.1 - KDE 4.14.30 - Dolphin 4.14.3 - LINUX Mageia 5
> > ___
> > Linux-il mailing list
> > Linux-il@cs.huji.ac.il
> > http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
> >
> >
> 
> 



-- 
Shlomo Solomon
http://the-solomons.net
Claws Mail 3.11.1 - KDE 4.14.30 - Dolphin 4.14.3 - LINUX Mageia 5

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Re: Python - getch() and kbhit()

2018-01-09 Thread Shlomi Fish

Hi Shlomo,

On Tue, Jan 9, 2018 at 10:36 AM, Shlomo Solomon 
wrote:

> Since import msvcrt in Python is Windows specific, I adapted some code
> I found to provide kbhit() and getch() in Python under Linux.
>
> I'm attaching KBHIT.py which replaces msvcrt and a small program to
> demonstrate how to use it - KBHIT-test.py.
>
> The KBHIT.py documentation includes usage instructions and also a link
> to the code I borrowed and (I hope) improved.
>
>
thanks for your contribution.

some comments:

1. What is the licence of the code? See
https://www.mail-archive.com/perl6-users@perl.org/msg04541.html .

2. Please use a PyPI-like distribution format, see
https://github.com/ofek/hatch or
https://github.com/audreyr/cookiecutter-pypackage .

3. For more best practices, see
https://github.com/shlomif/Freenode-programming-channel-FAQ/blob/master/FAQ.mdwn#what-are-some-best-practices-in-programming-that-i-should-adopt
.

4. -test.py should be -example.py

>
> --
> Shlomo Solomon
> http://the-solomons.net
> Claws Mail 3.11.1 - KDE 4.14.30 - Dolphin 4.14.3 - LINUX Mageia 5
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>
>

-- 
Shlomi Fish http://www.shlomifish.org/

You can never truly appreciate The Gilmore Girls until you've watched it in
the original Klingon.

Please reply to list if it's a mailing list post - http://shlom.in/reply .
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Python - getch() and kbhit()

2018-01-09 Thread Shlomo Solomon

Since import msvcrt in Python is Windows specific, I adapted some code
I found to provide kbhit() and getch() in Python under Linux.

I'm attaching KBHIT.py which replaces msvcrt and a small program to
demonstrate how to use it - KBHIT-test.py.

The KBHIT.py documentation includes usage instructions and also a link
to the code I borrowed and (I hope) improved. 


-- 
Shlomo Solomon
http://the-solomons.net
Claws Mail 3.11.1 - KDE 4.14.30 - Dolphin 4.14.3 - LINUX Mageia 5""" KBHIT-test.py
Shlomo Solomon
program to demonstrate the use of kbhit and getch in LINUX """

import KBHIT
kbd = KBHIT.KBHit()  # define a keyboard object


def get_input():
""" use kbhit and getch to get keyboard input """
key_code = 0
key_char = None
if kbd.kbhit():
print "hit ",
key_char = kbd.getch()
key_code = ord(key_char)

if key_code == KBHIT.ENTER: 
print "ENTER"
elif key_code == KBHIT.TAB: 
print "TAB" 
elif key_code == KBHIT.BACKSPACE: 
print "BACKSPACE" 
elif key_code == KBHIT.ESC: 
print "ESCAPE" 
else:
	print key_char, "code=", key_code 
return key_code, key_char


def main():
""" main runs until Escape is hit """
print "Starting test program - waiting for input"
print "Hit ESC to end the test"
key_code = 0
while key_code != KBHIT.ESC:
key_code, key_char = get_input()
print "End of test"


if __name__ == "__main__":
main()
"""
KBHIT.py
A Python class to implement kbhit() and getch()
  adapted by Shlomo Solomon from http://home.wlu.edu/~levys/software/kbhit.py
  NOTES- This version has been tested on LINUX, but should work on Windows too
   - the original code also had getarrow() which I deleted in this version
   - works with ASCII chars, ENTER, ESC, BACKSPACE - NOT with special keys
   - Does not work with IDLE.


> 2 ways to use in LINUX - the 2nd one is better!!
>>> 1 >
from KBHIT import KBHit
kbd = KBHit()

Then use as follows:
if kbd.kbhit():
print kbd.getch()

optionally - add the following constants:
ENTER = 10
ESC = 27
BACKSPACE = 127
TAB = 9
>>>


>>> 2 >
import KBHIT
kbd = KBHIT.KBHit()

Then use as follows:
if kbd.kbhit():
print kbd.getch()

the constants mentioned in the first method will be available as:
KBHIT.ENTER, etc
>>>


This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as 
published by the Free Software Foundation, either version 3 of the 
License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
"""

import os

if os.name == 'nt':  # Windows
os = 'nt'
import msvcrt
else:# Posix (Linux, OS X)
os = 'LINUX'
import sys
import termios
import atexit
from select import select

# special key definitions
ENTER = 10
ESC = 27
BACKSPACE = 127
TAB = 9

class KBHit:
""" this class does the work """
def __init__(self):
"""Creates a KBHit object to get keyboard input """

if os == 'LINUX':
# Save the terminal settings
self.fd = sys.stdin.fileno()
self.new_term = termios.tcgetattr(self.fd)
self.old_term = termios.tcgetattr(self.fd)

# New terminal setting unbuffered
self.new_term[3] = (self.new_term[3] & ~termios.ICANON & ~termios.ECHO)
termios.tcsetattr(self.fd, termios.TCSAFLUSH, self.new_term)

# Support normal-terminal reset at exit
atexit.register(self.set_normal_term)


def set_normal_term(self):
""" Resets to normal terminal.  On Windows does nothing """
if os == 'LINUX':
termios.tcsetattr(self.fd, termios.TCSAFLUSH, self.old_term)


def getch(self):
""" Returns a keyboard character after kbhit() has been called """
if os == 'nt':
return msvcrt.getch().decode('utf-8')
else:
return sys.stdin.read(1)

def kbhit(self):
""" Returns True if keyboard character was hit, False otherwise. """
if os == 'nt':
return msvcrt.kbhit()
else:
dr, dw, de = select([sys.stdin], [], [], 0)
return dr != []


# Test
if __name__ == "__main__":
""" main() tests the kbhit() and getch() functions """
kbd = KBHit()
print'Hit any key, or ESC to exit'

while True:
if kbd.kbhit():
print "HIT ",
char_hit = kbd.getch()
if ord(char_hit) == ESC:
print "ESC - ending test"
break
print

Re: Python - getch() and kbhit()

Re: oVirt over CentOS or ovirt-node

Re: oVirt over CentOS or ovirt-node

Re: oVirt over CentOS or ovirt-node

Re: Python - getch() and kbhit()

Re: Python - getch() and kbhit()

Re: Python - getch() and kbhit()

Python - getch() and kbhit()

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