Re: Feasibility of console based (non-Gui) Tkinter app which can accept keypresses?
You may want to check Urwid instead.
2018-07-11 16:22 GMT-03:00 Jim Lee :
> On 07/11/18 07:09, jkn wrote:
>
>> Hi All
>> This is more of a Tkinter question rather than a python one, I
>> think, but
>> anyway...
>>
>> I have a Python simulator program with a Model-View_Controller
>> architecture. I
>> have written the View part using Tkinter in the first instance; later I
>> plan
>> to use Qt.
>>
>> However I also want to be able to offer an alternative of a console-only
>> operation. So I have a variant View with the beginnings of this.
>>
>> Naturally I want to keep this as similar as possible to my Tkinter-based
>> view. I
>> had thought that I had seen a guide somewhere to using Tk/Tkinter in a
>> non-GUI
>> form. I don't seem to be able to track this down now, but I have at least
>> been
>> successful in hiding ('withdrawing') the main Frame, and running a main
>> loop.
>>
>> The bit which I am now stumbling on is trying to bind key events to my
>> view,
>> and I am wondering if this actually makes any sense. In the absence of a
>> GUI I
>> want to accept keypresses to control the simulation. But in a console app
>> I will
>> have no visible or in focus window, and therefore at what level would any
>> keys be bound? Not at the widget level, nor the frame, and I am not sure
>> if the
>> the root makes sense either.
>>
>> So I am looking for confirmation of this, and/or whether there is any way
>> of
>> running a Tkinter application in 'console' mode, running a main loop and
>> both outputting data and accepting, and acting on, key presses.
>>
>> Thanks
>> J^n
>>
>>
> I think the general answer is no, but beyond that, it may be worth
> considering switching from an MVC architecture to a simpler
> frontend-backend, especially if you intend to add a third interface (Qt):
>
> MVC w/Tk, console, Qt:
>
> Seven conceptual modules (three controllers, three views, one model)
> Two abstraction layers (controller<->model, model<->view)
>
> Frontend-backend w/Tk, console, Qt:
>
> Four conceptual modules (three frontends, one backend)
> One abstraction layer (frontend<->backend)
>
> -Jim
>
> --
> https://mail.python.org/mailman/listinfo/python-list
>
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Re: best way to remove leading zeros from a tuple like string
>>> repr(tuple(int(i) for i in s[1:-1].split(',')))
'(128, 20, 8, 255, -1203, 1, 0, -123)'
2018-05-21 4:26 GMT-03:00 Peter Otten <__pete...@web.de>:
> bruceg113...@gmail.com wrote:
>
> > Looking over the responses, I modified my original code as follows:
> >
> s = "(128, 020, 008, 255, -1203,01,-000, -0123)"
> ",".join([str(int(i)) for i in s[1:-1].split(",")])
> > '128,20,8,255,-1203,1,0,-123'
>
> I think this looks better with a generator instead of the listcomp:
>
> >>> ",".join(str(int(i)) for i in s[1:-1].split(","))
> '128,20,8,255,-1203,1,0,-123'
>
>
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Re: Clickable hyperlinks
2017-01-04 7:39 GMT-03:00 Steve D'Aprano :
> On Wed, 4 Jan 2017 08:32 pm, Deborah Swanson wrote:
>
> Aside: you've actually raised a fascinating question. I wonder whether
> there
> are any programming languages that understand URLs as native data types, so
> that *source code* starting with http:// etc is understood in the same way
> that source code starting with [ is seen as a list or { as a dict?
> ...
>
Some Smalltalk implementations have something that comes close:
st> 'https://python.org' asUrl retrieveContents
`asUrl` would be a string method returning a URL instance, which also has a
convenient method `retrieveContents` wrapping an http client. Not hard to do
with Python, I think this could be an interesting exercise for a learner.
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Re: Clickable hyperlinks
2017-01-04 7:39 GMT-03:00 Steve D'Aprano :
> On Wed, 4 Jan 2017 08:32 pm, Deborah Swanson wrote:
>
> Aside: you've actually raised a fascinating question. I wonder whether
> there
> are any programming languages that understand URLs as native data types, so
> that *source code* starting with http:// etc is understood in the same way
> that source code starting with [ is seen as a list or { as a dict?
> ...
>
Some Smalltalk implementations have something that comes close:
st> 'https://python.org' asUrl retrieveContents
`asUrl` would be a string method returning a URL instance, which also has a
convenient method `retrieveContents` wrapping an http client. Not hard to
do with Python, I think this could be an interesting exercise for a learner.
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Re: OT: limit number of connections from browser to my server?
Long shot here: Create a JS framework for loading resources in a better way: 1. Load HTTP and your JS core. 2. Load the rest of the resources via JS (maybe using promises for chaining the requests one after the other) -- https://mail.python.org/mailman/listinfo/python-list
