I'm new to Python and I'm trying to code something to learn the language
details. I'm in trouble with asyncronous events, like asyncronous
inputs (from serial port, from socket and so on).
Let's consider a simple monitor of the traffic on a serial port. I'm
using pyserial and I looked at the
Il 11/08/2012 01:12, Dennis Lee Bieber ha scritto:
What you apparently missed is that serial.read() BLOCKs until data
is available (unless the port was opened with a read timeout set).
[...]
serial.read() may, there for, be using select() behind the scenes.
Hmm..., so I could o
I need to develop a Python application that is a sort of gateway between
to networks: a "serial bus" network (think of a serial port or a USB
connection) and a MQTT connection (in my case, it's AWS IoT service).
On the bus, a proprietary protocol is implemented. From the bus, the app
knows the
I come from the C language, that is a compiled and strongly typed
language. I learned many good tricks to write good code in C: choose a
coding style, turn on as many warnings as possible, explicitly declare
static variables and functions (when needed), explicitly declare const
variables (if t
I'm sorry, I know it is a FAQ..., but I couldn't find a good answer.
I'm learning python and I'd like to start creating GUI applications,
mainly for Windows OS. In the past, I wrote many applications in Visual
Basic 4: it was very fast and you could create simple but effective GUIs
in Windows
Il 18/10/2016 02:57, Wildman ha scritto:
On Tue, 18 Oct 2016 00:58:42 +0200, pozz wrote:
I'm sorry, I know it is a FAQ..., but I couldn't find a good answer.
I'm learning python and I'd like to start creating GUI applications,
mainly for Windows OS. In the past, I wrote
Il 18/10/2016 03:25, Paul Rubin ha scritto:
If you're just getting started and you're not trying to make something
super slick, I'd suggest Tkinter. It's easy to learn and use, you can
bang stuff together with it pretty fast, it's included with various
Python distributions so you avoid download/
Il 18/10/2016 09:42, Mark Summerfield ha scritto:
PySide/PyQt
On Windows I use Python 3.4 + PySide 1.2.4 (Qt 4.8). I have found this
very reliable and use it for both my personal projects and for my
commercial products. I don't use a GUI design tool but you could use Qt
Designer to visually draw
Il 18/10/2016 16:56, Michael Torrie ha scritto:
On 10/18/2016 02:33 AM, Mark Summerfield wrote:
When I started out I used Qt Designer to produce .ui files (XML) and
then used the Qt uic tool to convert this to C++ (although you can
convert to Python using pyuic). I then studied the code and lear
Il 18/10/2016 18:41, Demosthenes Koptsis ha scritto:
> My favorite GUIs are PyQt and wxPython.
>
> I prefer PyQt than PySide because PySide seem to me like an abandoned
> project.
>
> Also i prefer PyQt than wxPython because i can design the forms in
> QtDesigner easily.
>
> wxPython and wxWidgets
I have a dictionary where the keys are numbers:
mydict = { 1: 1000, 2: 1500, 3: 100 }
I would like to convert keys from number to string representation:
mydict = { "apples": 1000, "nuts": 1500, "tables": 100 }
Of course, somewhere I have the association between key-numbers and
key-strings, ma
I'm designing a GUI application in Python (with pyGObject, so GTK). The
application communicates with a remote device (connected through RS232,
but it could be on Internet) to retrieve its status and set/get its
configuration.
When the user press "Start" button, the application starts sending
Il 26/10/2016 09:13, pozz ha scritto:
> [...]
What is the best approach to use in my scenario (GUI and backend
communication)?
I just found this[1] page, where the thread approach is explained with
the following code:
---
import threading
import time
from gi.repository import G
Il 26/10/2016 09:13, pozz ha scritto:
> [...]
When the user press Start button (the pressed handler is in the GUI class):
self.comm_active = True
threading.Thread(target=self.comm_thread).start()
The backend thread is:
def comm_thread(self):
while self.comm_act
Il 26/10/2016 13:27, Antoon Pardon ha scritto:
Op 26-10-16 om 12:22 schreef pozz:
Il 26/10/2016 09:13, pozz ha scritto:
[...]
When the user press Start button (the pressed handler is in the GUI
class):
self.comm_active = True
threading.Thread(target=self.comm_thread).start()
The backend
Il 26/10/2016 13:16, jmp ha scritto:
[...]
I suggest you write a GUI that make synchronouscalls to a remote
application, if possible. If the remote app is in python, you have
access to remote protocols already written for you, Pyro is one of them,
you can skip the low level communication part
Il 26/10/2016 16:18, jmp ha scritto:
On 10/26/2016 02:45 PM, pozz wrote:
Il 26/10/2016 13:16, jmp ha scritto:
[...]
I suggest you write a GUI that make synchronouscalls to a remote
application, if possible. If the remote app is in python, you have
access to remote protocols already written
Il 27/10/2016 13:33, jmp ha scritto:
On 10/27/2016 12:22 PM, pozz wrote:
Anyway I don't like this approach, because the main (and single) thread
should check in_waiting every X milliseconds.
If X is too high, I could wait for the answer even if it is already
ready in the input buffer.
If
I'm trying to create a simple program in Python that opens N serial
ports (through pyserial) and forward every byte received on one of those
ports to the other ports.
At startup I open the ports and create and start a thread to manage the
receiving. When a byte is received, I call the .write()
Il 17/09/2015 14:00, alister ha scritto:
I would like to know more about how many serial ports are connected
One real serial port and two virtual serial ports, created by com0com
(it's a free virtual serial port for Windows).
what the equipment they are connected to does and expects.
Ra
Il 17/09/2015 15:04, Dennis Lee Bieber ha scritto:
On Thu, 17 Sep 2015 12:00:08 + (UTC), alister
declaimed the following:
I can see the data being transmitted snowballing & running away in a +ve
feedback loop very easily.
Especially if a few of the remote devices are configured
Il 17/09/2015 11:42, Chris Angelico ha scritto:
On Thu, Sep 17, 2015 at 7:28 PM, pozz wrote:
At startup I open the ports and create and start a thread to manage the
receiving. When a byte is received, I call the .write() method for all the
other ports.
It works, but sometimes it seems to
I know I can load multiple gettext.translation:
it = gettext.translation('test', localedir="locale", languages=["it"])
es = gettext.translation('test', localedir="locale", languages=["es"])
and install one translation at run-time when I want at a later time
(when the user selects a new lang
Il 15/06/2017 15:22, Peter Otten ha scritto:
pozz wrote:
I know I can load multiple gettext.translation:
it = gettext.translation('test', localedir="locale", languages=["it"])
es = gettext.translation('test', localedir="locale", lan
I'd like to launch *and control* a long thread. I want to print the
progress of the long thread in the main thread. It's a GUI script, here
it's a console script only to simplify.
import threading
import time
class MyClass:
def start(self):
self.max = 5
self.pause = 1
Il 05/07/2017 09:56, pozz ha scritto:
> [...]
It seems it works, but I'm not sure it is the correct way to share the
variable self.cnt. It is only written in the long thread and only read
in the main thread.
Could a single Python instruction be interrupted (in this case, self.cnt
= i)
Il 19/10/2023 00:09, Janis Papanagnou ha scritto:
I am pondering about writing a client/server software with
websockets as communication protocol. The clients will run
in browser as Javascript programs and the server may be in
any (any sensible) programming language running standalone
to be conne
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