pythoncard-users — PythonCard Users and Developers

Re: [Pythoncard-users] event overview and unused events will no longer be bound

[Paul P. <pau...@ho...>]

Date: Thu, 29 Apr 2004 09:21:40 -0700

>From: "Kevin Altis" <al...@se...>
>To: "pythoncard-Users" <pyt...@li...>
>Subject: [Pythoncard-users] event overview and unused events will no longer be bound
>
>Rowland and I are gutting the old event system code in the framework 
>and replacing it with something much simpler without impacting user 
>code [...] Currently, we bind all 
>events applicable to a component regardless of whether an event handler 
>exists for a particular event. 
>
I think this might affect me in vb2py - I use a rather complex 
mapping(*) to map VB controls onto PythonCard controls. Essentially I 
have a set of control classes that I register with PythonCard. These 
controls are proxy's for the real PythonCard classes and there is also a 
custom metaclass which does some magic in mangling VB attributes, 
methods, event handlers etc when the class is created so that they play 
properly with PythonCard.

It is possible that your new scheme might result in the event bindings 
being 'not found' and therefore the converted event handlers will not 
get called.

This may not happen of course, and in any event my use case is pretty 
extreme, but it would be useful if there was some way I could request a 
rescan or force the binding of events. Even if this isn't possible, I 
imagine that I can get around this in the metaclass but if it is simple 
to expose the scanning/binding process ... ;)

Regards,

Paul

(*) There are simpler, more direct, mappings which wouldn't suffer from 
this issue but they would involve doing some even more complex type 
inferencing (or in some cases, guessing!) when I convert the VB into Python.

Re: [Pythoncard-users] event overview and unused events will no longer be bound

[Kevin A. <al...@se...>]

On Apr 29, 2004, at 9:46 AM, Richard Wolff wrote:

>
>> So, the most obvious thing you'll see is that the Message Watcher
>> doesn't display "unused events" because those events aren't ever bound
>> and never go through the PythonCard framework dispatch mechanism. In
>> order to see all events for a given component as well as event order
>> you'll have to run a special sample like testevents that binds all
>> events.
>
> Could you provide a debug option that would instantiate a handler to
> catch/display the "unused events"?  Once in a rare while, it's helpful 
> to see
> the unused events scrolling by and then realize "ah, that's the one I 
> should
> be catching".
>
Yeah, I agree that it is useful to see the unused events for debugging 
purposes, though it doesn't seem like many people ever use the Message 
Watcher. Anyway, it shouldn't be too hard to hook that up. We might 
even make the binding and dispatch conditional so that a config flag 
would change whether all events are hooked up or not, so that way if 
the Message Watcher is active it would bind all events and otherwise 
would only bind the used events. Whether we do that is conditional on 
simply being able to call Skip() for unused events in dispatch and have 
them do the right thing as far as wxPython is concerned. I'll test that 
with background events today, but the components are trickier.

ka

Re: [Pythoncard-users] Printing.

[Kevin A. <al...@se...>]

On Apr 29, 2004, at 9:32 AM, ralph heimburger wrote:

> I am creating a "report interface" for my app which includes simple 
> columnar reports.
>
> Is wxHtmlEasyPrinting the best approach?
>
> If so, how do I go about formatting the output: page breaks, sub 
> reports,etc?
>
You'll probably want to ask on the wxPython-users mailing list if you 
have specific questions about those classes since PythonCard doesn't 
provide any specific printing support.

http://www.wxpython.org/maillist.php

I almost never print from my Win2K box and I just realized I have never 
printed from my Mac, ever, so I also know that I probably won't be the 
one that adds any printing wrapper support to PythonCard <wink>

A lot of people use ReportLab to generate PDF reports.

http://www.reportlab.com/

I will be adding component wrappers for the ActiveX_PDFWindow and 
ActiveX_FlashWindow to PythonCard 0.8 which will be similar to the 
ActiveX_IEHtmlWindow that is already wrapped. These are 
Windows-specific, but too useful to leave out for those people writing 
something just for Windows. The PDFWindow component will allow you to 
display any PDF file so if you are generating reports with ReportLab 
you'll be able to preview and print them easily. See the wxPython demo.

ka

[Pythoncard-users] Printing.

[ralph h. <1st...@1I...>]

I am creating a "report interface" for my app which includes simple columnar reports.  

Is wxHtmlEasyPrinting the best approach?

If so, how do I go about formatting the output: page breaks, sub reports,etc?



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[Pythoncard-users] event overview and unused events will no longer be bound

[Kevin A. <al...@se...>]

Rowland and I are gutting the old event system code in the framework 
and replacing it with something much simpler without impacting user 
code. In order to make sure we don't miss something fundamental in the 
redesign I did a brain dump yesterday on event issues to supplement 
what Rowland had already written about the actual implementation we're 
pretty sure we're going to use. I thought some people on this list 
would find the "Overview and Requirements" section interesting.

http://wiki.wxpython.org/index.cgi/PythonCardNewEventSubsystem

There is one change in how events are bound and dispatched that I want 
to make that could impact user code, but I don't think anyone is taking 
advantage of this feature so I doubt it matters. Currently, we bind all 
events applicable to a component regardless of whether an event handler 
exists for a particular event. That means there is a lot of dispatch 
code and processing in the PythonCard framework for unused events. Even 
though the dispatch processing is very quick it is still a waste. In 
the new system, only those events that have event handlers will be 
bound which will make the runtime processing dramatically more 
efficient as well as reduce the required amount of dispatch code in the 
framework.

The original idea for binding all events was that you could then add 
event handlers while the app was running and they would magically be 
used. That should still be possible in the new system, but there will 
be additional methods that you have to call to bind and unbind a 
particular event. Normal apps would never need to use those methods.

So, the most obvious thing you'll see is that the Message Watcher 
doesn't display "unused events" because those events aren't ever bound 
and never go through the PythonCard framework dispatch mechanism. In 
order to see all events for a given component as well as event order 
you'll have to run a special sample like testevents that binds all 
events.

ka
p.s. I've already plugged the memory leak for background level events 
like idle and will probably check that in later today. The revised 
event system for all the components probably won't be checked in until 
this weekend.

Re: [Pythoncard-users] Python/PythonCard: live like HyperCard?

[Kevin A. <al...@se...>]

On Apr 29, 2004, at 2:20 AM, Geoff Canyon wrote:

> 1. Start the Resource Editor
> 2. Create a new project
> 3. Lay out the interface for that project -- at this point no code 
> entry is possible and the project is dead.
> 4. Save the project as a resource file.
> 5. Open the project in PythonCard -- at this point the interface of 
> the project is modifiable, but not savable.
> 6. Edit the code of the project -- which is one big long list of code.
> 7. Run the project in some fashion
> 8. Test the project.
> 9. Rinse and repeat steps 5-8.
> 10. When I'm ready, do something or other to build the application. On 
> Mac and Unix it will open the console window and I can't stop it.

The way the resourceEditor File->New... dialog works now you are asked 
to save the new project (template) before you start editing. I need to 
update the walkthrough. If you just open an old project or copy the 
files of an old project as the basis for a new one you'll already have 
both a resource file and the associated code module. That means you can 
do File->Run at any time. Any pair of files can be copied to the 
resourceEditor templates directory and they will show up in the 
File->New... dialog.

Since there is no editor integration in the resourceEditor yet, you 
need to use the codeEditor or the editor/IDE of your choice to edit the 
source code. I would like to make a more tightly coupled layout/source 
editor environment as well as support hooking up events via the 
Property Editor, but that is probably more of a version 1.1 goal, not 
something I'll have time to do before 1.0. This is an Open Source 
project, so more developers can join in and it will help make these 
things better, sooner.

The codeEditorR.py module was a simple experiment I did that works just 
like the codeEditor, but it examines the associated resource file for a 
module and displays a popup menu on the top left of all of the 
components. When you select a component, the popup menu on the right 
displays all the event handler names that are valid for that type of 
component. Event handlers that are already defined have a + in front of 
the name and selecting that name from the menu will cause the editor to 
scroll down to the first line of the event handler. If you select an 
event name that doesn't have a + in front of it then a code stub will 
be inserted into the source at the current insertion point. The idea 
was to merge a slightly more sophisticated and better looking version 
of that into the resourceEditor.

You can edit the source and resource files simultaneously and whenever 
you do a File->Run the file you're working on - source in codeEditor or 
resource in resourceEditor - will be automatically saved so you're 
testing the most recent version of your project.

http://www.python.org/cgi-bin/moinmoin/PythonEditors

When you run the program, from the resourceEditor, codeEditor, 
double-click on the file, or invoke it from the shell it is running 
standalone. At a minimum you will have a close box on the main frame, 
but depending on what template you used, you'll probably have a 
File->Exit menu item as well.

If your application code has a syntax error before it gets into the 
main loop, Python will just print an exception to the console window 
and quit. Unless you ran the script from the console, or used the Run 
with Interpreter menu item in the codeEditor or resourceEditor you 
won't be able to see what the syntax error was.

If for some reason there is a nasty event handler related bug 
associated with an on_close handler then it is possible you won't be 
able to quit the script normally and will have to kill it with the Task 
Manager in Windows or use "kill -9 pid" or some such under *nix.

When you're done and ready to build a standalone, then you can use 
py2exe, McMillans installer, and BundleBuilder to package up the your 
source, and the needed modules from PythonCard, wxPython, and Python.

ka

Re: [Pythoncard-users] Python/PythonCard: live like HyperCard?

[Kevin A. <al...@se...>]

On Apr 29, 2004, at 7:29 AM, RANDY BURNS wrote:

> There are some simple single user databases that are written in Python=20=

> or Perl.
> These are a bit more than what I think of as a "flat file" databases,=20=

> and allow you to tie an associative array to a database. If you used=20=

> one of those and thought the persistancy interface through early on in=20=

> the process, I think it=A0 would be pretty easy for someone to convert=20=

> this tool to SQL databases early in the process.
> =A0
> >What I do know is possible and will probably do first is make a
> >flatfileDatabase environment app which has some of the features of a
> >full PythonCard environment. This is probably analogous to FileMaker=20=

> or
> >MS Access. The database app is started and then you can open, use,
> >design, etc. various database templates which will all get some
> >capabilities from the database app environment. The same thing would=20=

> be
> >possible for SQL databases, but I'll do it for flatfileDatabase =
first.
> >If anyone else is interested, let me know and maybe work will get =
done
> >on it before 1.0 is finished.
>
The flatfileDatabase module currently support pickle, XML, and MetaKit.=20=

It should be relatively easy to have it support PySQLite and Gadfly.=20
But the other framework stuff is a higher priority item for me, so I=20
don't plan to spend any time on it until the other stuff is done,=20
unless someone else takes ownership and just needs a bit of input and=20
clarification from me on how particular bits work.

ka

Re: [Pythoncard-users] Python/PythonCard: live like HyperCard?

[ralph h. <1st...@1I...>]

My experience.  

I wrote some very large enterprise systems in DataFlex about 25 years ago.  Some are still in production today.  During the course of the last 6 years I have evaluated various 4GLs (Progress, FileMaker, Lotus Approach), IDEs (Microsoft .NET, J2EE, Omnis, Revelation, etc) and development environments that are both highly scalable and platform-independent.  BTW I never really figured out Revelation as I didn't have time.

When I first came across Python I was skeptical.  Having written standalone GUIs with Java and C++ I wanted something capable of the RAD model (not just fluff).  When I first downloaded PythonCard it was after I download Boa Constructor and wxGlade.  Both of these are good GUI designers but PythonCard was the first that I saw with true a WYSIWYG capability.  The fact that it separates the GUI from the actual programming wasn't readily apparent to me to be an advantage.

The MySQLDB integration was so simple and with the help of this community I have rewritten about 90% of the original functionality and added new features that I did in DataFlex (a 4GL) with 60% less code.

When I am ready to migrate to a prod/Qa environment, I simply copy the .py file to .pyw which prevents the user from seeing the console window.  I don't know if py2exe would make it load quicker.  The look and feel is impressive and I can create 1 form where before I created several.


PythonCard is a nice work!

--- Geoff Canyon <gc...@in...> wrote:
First, I should clarify: I come from a general/Revolution background, 
not a HyperCard background (at least not recently). I only used 
HyperCard as an example because it seemed more reasonable to assume 
people on this list were familiar with it, given the PythonCard name. 
As an example of why this is significant, I could care less about 
auto-save, and I never use idle.

That said, I'm still boggled. There's so much information, and 
seemingly no table of contents that allows me to answer the following:

In Revolution, I'm used to:

1. Starting Revolution
2. Creating a new project
3. Laying out the interface for that project
4. Adding code to various elements of that project
5. Interactively testing the project, going back and forth between 
testing and coding because the project runs live.
6. When I'm ready, I select the appropriate options and build the 
project as a standalone application.

Now, what I think I understand is that in PythonCard I:

1. Start the Resource Editor
2. Create a new project
3. Lay out the interface for that project -- at this point no code 
entry is possible and the project is dead.
4. Save the project as a resource file.
5. Open the project in PythonCard -- at this point the interface of the 
project is modifiable, but not savable.
6. Edit the code of the project -- which is one big long list of code.
7. Run the project in some fashion
8. Test the project.
9. Rinse and repeat steps 5-8.
10. When I'm ready, do something or other to build the application. On 
Mac and Unix it will open the console window and I can't stop it.

Is that accurate at all?

regards,

Geoff Canyon
gc...@in...



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Re: [Pythoncard-users] Python/PythonCard: live like HyperCard?

[Geoff C. <gc...@in...>]

First, I should clarify: I come from a general/Revolution background, 
not a HyperCard background (at least not recently). I only used 
HyperCard as an example because it seemed more reasonable to assume 
people on this list were familiar with it, given the PythonCard name. 
As an example of why this is significant, I could care less about 
auto-save, and I never use idle.

That said, I'm still boggled. There's so much information, and 
seemingly no table of contents that allows me to answer the following:

In Revolution, I'm used to:

1. Starting Revolution
2. Creating a new project
3. Laying out the interface for that project
4. Adding code to various elements of that project
5. Interactively testing the project, going back and forth between 
testing and coding because the project runs live.
6. When I'm ready, I select the appropriate options and build the 
project as a standalone application.

Now, what I think I understand is that in PythonCard I:

1. Start the Resource Editor
2. Create a new project
3. Lay out the interface for that project -- at this point no code 
entry is possible and the project is dead.
4. Save the project as a resource file.
5. Open the project in PythonCard -- at this point the interface of the 
project is modifiable, but not savable.
6. Edit the code of the project -- which is one big long list of code.
7. Run the project in some fashion
8. Test the project.
9. Rinse and repeat steps 5-8.
10. When I'm ready, do something or other to build the application. On 
Mac and Unix it will open the console window and I can't stop it.

Is that accurate at all?

regards,

Geoff Canyon
gc...@in...

[Pythoncard-users] twistedEchoClient sample

[Kevin A. <al...@se...>]

http://cvs.sourceforge.net/viewcvs.py/pythoncard/PythonCard/samples/ 
twistedEchoClient/

I've added a twistedModel.py module to the PythonCard framework package  
which contains a TwistedApplication class that can be used instead of  
Application (formerly PythonCardApp) if you want to write a PythonCard  
application that uses Twisted. The twistedEchoClient shows how to use  
the new class. I also created a generic loginDialog so it would be easy  
to connect to a server on another machine with a different default  
port, username, and password. Obviously this won't be available until  
release 0.8 unless you're working from PythonCard cvs.

Here's the readme.txt file:

Twisted Echo client which uses the TwistedApplication class.

class TwistedApplication(model.Application):
     def OnInit(self):
         model.Application.OnInit(self)
         reactor.startRunning()
         wx.EVT_TIMER(self, 999999, self.OnTimer)
         self.twistedTimer = wx.Timer(self, 999999)
         self.twistedTimer.Start(250, False)
         return True

     def OnTimer(self, event):
         reactor.iterate()

     def OnExit(self):
         # need to stop the timer for cleanup purposes
         self.twistedTimer.Stop()
         self.twistedTimer = None
         reactor.stop()


You need to start pbecho.py first so you have a server to connect to.  
pbecho.py is included in the Twisted distribution within your Python  
site-packages directory:

     site-packages/TwistedDocs/examples/pbecho.py

Contributed by Stephen Waterbury. Additional code by Kevin Altis

Adapted from Uwe C. Schroeder's cookbook entry "Using wxPython with  
Twisted Python"

     http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/181780


ka

Re: [Pythoncard-users] Re: desktop - web apps

[Kevin A. <al...@se...>]

On Apr 27, 2004, at 11:54 AM, Andrei wrote:

> gaston wrote on Tue, 27 Apr 2004 12:23:16 -0600:
>
>> Does any of the more experienced users know of any cheap python 
>> hosting
>> where python scripts can be used to test and practice?
>
> For testing and practice you can also run a webserver locally. On 
> Windows
> you could look at e.g. Abyss webserver for a really simple solution, 
> but
> you can also get heavy hitters like Apache to run locally.
>
If you just want to run locally, you can use the built-in Python web 
server classes or the webserver sample which wraps those classes, 
supports CGI, and a simple visual log of incoming requests. The code 
needs to be simplified for Python 2.3 since most of the workaround code 
is no longer needed and just mirrors what is now included with Python 
2.3 (2.2.x was broken and couldn't deal with POST from IE browsers).

http://pythoncard.sourceforge.net/samples/webserver.html

ka

Re: [Pythoncard-users] Python/PythonCard: live like HyperCard?

[Kevin A. <al...@se...>]

On Apr 28, 2004, at 7:05 AM, Geoff Canyon wrote:

> Forgive the newby question, but I didn't see the answer to this on the 
> web site(s):
>
> HyperCard runs live -- you never have to run because it is always 
> running, even as you change properties and set scripts. Is this 
> possible in Python/PythonCard?
>
No and sort of. That applies to version 1.0 which will be done sometime 
in early summer; the next release, 0.8, will be out sometime in May. 
Version 2.0 of PythonCard will have an expanded feature set.

PythonCard is not HyperCard, and it doesn't currently work the same. In 
HyperCard there was an application, either HyperCard or a HyperCard 
runtime application and the stacks that it ran were "documents". You 
could build single stack standalones, but for the most part you were 
always running HyperCard and just switched stacks (documents). Of 
course, the stacks were more than just data, so they acted like 
applications and you could send messages between stacks.

We can't do that in PythonCard today, in part because we don't entirely 
know how to pull it off and more so because there aren't enough 
developer resources to make it happen yet. A long time ago I thought we 
might do it by using a central PythonCard app that was optionally 
started when you start up your application. The application would 
register itself with the server app and then any other registered 
PythonCard app, even on different machines could message with your app. 
The directory service becomes one of the central problems. The original 
idea was going to use XML-RPC for communication. These days I lean 
towards basing it all on Twisted if the Twisted LGPL license won't 
cause a problem.

So PythonCard apps are like apps that you would create with most other 
GUI toolkits. There is no automatic persistent data storage nor can 
applications message to one another, they are just like any other 
application. There is a flatfileDatabase module and samples that 
explore the idea of automatic persistent storage similar to what you 
would get with a single background HyperCard stack, but using it is 
optional.

The "sort of" is that PythonCard has optional runtime tools that any 
PythonCard app has access to including a Shell, Namespace Viewer, 
Property Editor and Message Watcher. The Shell is a complete Python 
interpreter environment and more, in comparison the HyperCard Message 
Box was a complete wimp. <wink> You can create and manipulate 
components and have full access to the runtime object model of your 
application. This is unbelievably powerful, but I'm guessing that it is 
generally underutilized, except by me, since I run most of the samples 
and tools with the shell on a regular basis. The codeEditor is a pretty 
good example of some immediate ways that you can leverage this power in 
the form of "scriptlets". The Property Editor allows you to change some 
component attributes at runtime, but the changes are not saved to the 
resource file.

The Message Watcher is very similar to the one HyperCard had. One big 
difference is that in the underlying wxPython event model there is 
really no such thing as "idle", that is, an event that fires when the 
system isn't doing anything. Instead "idle" in wxPython means there are 
no more events in the event queue so if the user isn't doing anything 
and no timers are running then you'll get one idle and that's it.

See the PythonCard documentation page for more info on the runtime 
tools.

Once PythonCard 1.0 is done I would like to start investigating an "app 
runner" that works more like HyperCard did. All PythonCard "background" 
classes are defined in modules with a separate if __name__ == 
'__main__' block at the bottom of the file specifically because it 
makes it very easy to support loading the background from the module as 
a child window of another app if the module isn't run standalone. So, 
without breaking the user code API we should be able to add a 
PythonCard app environment say in version 1.1. The environment would 
run and via the File menu you would load PythonCard modules. That 
environment in theory could switch between "design" and "run" and would 
allow messaging between applications. This may just be theory, there 
might be something that prevents it from working and so the idea would 
have to get bumped to what I currently think of as PythonCard 2.0.

What I do know is possible and will probably do first is make a 
flatfileDatabase environment app which has some of the features of a 
full PythonCard environment. This is probably analogous to FileMaker or 
MS Access. The database app is started and then you can open, use, 
design, etc. various database templates which will all get some 
capabilities from the database app environment. The same thing would be 
possible for SQL databases, but I'll do it for flatfileDatabase first. 
If anyone else is interested, let me know and maybe work will get done 
on it before 1.0 is finished.

Also see: http://wiki.wxpython.org/index.cgi/PythonCardForHyperCardUsers

ka

[Pythoncard-users] Re: desktop - web apps

[Andrei <pro...@re...>]

gaston wrote on Tue, 27 Apr 2004 12:23:16 -0600:

> Does any of the more experienced users know of any cheap python hosting 
> where python scripts can be used to test and practice?

For testing and practice you can also run a webserver locally. On Windows
you could look at e.g. Abyss webserver for a really simple solution, but
you can also get heavy hitters like Apache to run locally.

-- 
Yours,

Andrei

=====
Real contact info (decode with rot13):
cebwrpg5@jnanqbb.ay. Fcnz-serr! Cyrnfr qb abg hfr va choyvp cbfgf. V ernq
gur yvfg, fb gurer'f ab arrq gb PP.

Re: [Pythoncard-users] Python/PythonCard: live like HyperCard?

[ralph h. <1st...@1I...>]

Even though I am still a newbie as well and am currently developing a pythoncard application I will take a stab.

As far as "running live" it is not a service.  Pythoncard is a set of libraries that are "imported" into your script at development.  When you run the script, it imports the PythonCard objects as the script is interpreted.  Python is an interpreted language.    

In essence it is as "live" as your scripts are.

--- Geoff Canyon <gc...@in...> wrote:
Forgive the newby question, but I didn't see the answer to this on the 
web site(s):

HyperCard runs live -- you never have to run because it is always 
running, even as you change properties and set scripts. Is this 
possible in Python/PythonCard?

regards,

Geoff Canyon
gc...@in...



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[Pythoncard-users] Python/PythonCard: live like HyperCard?

[Geoff C. <gc...@in...>]

Forgive the newby question, but I didn't see the answer to this on the 
web site(s):

HyperCard runs live -- you never have to run because it is always 
running, even as you change properties and set scripts. Is this 
possible in Python/PythonCard?

regards,

Geoff Canyon
gc...@in...

Re: [Pythoncard-users] Refresh components

[Kevin A. <al...@se...>]

On Apr 27, 2004, at 11:16 AM, Kevin Altis wrote:

> Calling Refresh and Update is safest because it forces the whole 
> control to
> be redrawn. The StaticText component actually contains an explicit 
> Refresh()
> call as part of its _setText method but I'm considering removing that. 
> The
> original idea was that StaticText is more likely to be used for the 
> kind of
> status messages you are doing above, so it would be nice to have it
> automatically do the right thing. Of course, it really needs to call 
> Update
> as well for it to always work on all platforms, so I'll add that until 
> a
> decision is made on whether to drop automatic Refresh/Update in the 
> future.
>
I went ahead and added a redraw() method to Widget, so starting with 
release 0.8 it will be easy to force an immediate update with any 
component.

     def redraw(self):
         """Force an immediate redraw without waiting for an event 
handler to finish."""
         self.Refresh()
         self.Update()

Note that this isn't required for BitmapCanvas since it refreshes 
automatically as part of the blit from the offscreen bitmap after each 
draw operation and has its own autoRefresh attribute to avoid blits 
after each draw operation if you're doing a lot of draw operations at 
once and want finer control over when to update the screen.

ka

Re: [Pythoncard-users] desktop - web apps

[gaston <ga...@nt...>]

Adam Russell wrote:

> I like www.infolaunch.com
> small no bs web hosting shop. You get shell access too which is 
> important. I consider them to be cheap at $9.95 a month.
>
>
> gaston wrote:
>
>> Hi, I downloaded python carda about 2 weeks ago. I'm still doing the 
>> tutorials, and changing the minimal app. : )
>>
>> The thing is, in the future, I'd like to do applications that work on 
>> your desktop but also that can connect to the internet. The thing is, 
>> I'd need to have some python scripts online in some server somewhere.
>>
>> Does any of the more experienced users know of any cheap python 
>> hosting where python scripts can be used to test and practice?
>>
>> Thanks for any help.
>>
>> G.
>>
>>
>>
>> -------------------------------------------------------
>> This SF.net email is sponsored by: The Robotic Monkeys at ThinkGeek
>> For a limited time only, get FREE Ground shipping on all orders of $35
>> or more. Hurry up and shop folks, this offer expires April 30th!
>> http://www.thinkgeek.com/freeshipping/?cpg=12297
>> _______________________________________________
>> Pythoncard-users mailing list
>> Pyt...@li...
>> https://lists.sourceforge.net/lists/listinfo/pythoncard-users
>
>
>
>
>
> -------------------------------------------------------
> This SF.net email is sponsored by: The Robotic Monkeys at ThinkGeek
> For a limited time only, get FREE Ground shipping on all orders of $35
> or more. Hurry up and shop folks, this offer expires April 30th!
> http://www.thinkgeek.com/freeshipping/?cpg=12297
> _______________________________________________
> Pythoncard-users mailing list
> Pyt...@li...
> https://lists.sourceforge.net/lists/listinfo/pythoncard-users
>
>
Thank you for the tips. I'll look into both links.

Gaston.

Re: [Pythoncard-users] desktop - web apps

[Adam R. <Ada...@ch...>]

I like www.infolaunch.com
small no bs web hosting shop. You get shell access too which is 
important. I consider them to be cheap at $9.95 a month.


gaston wrote:

> Hi, I downloaded python carda about 2 weeks ago. I'm still doing the 
> tutorials, and changing the minimal app. : )
>
> The thing is, in the future, I'd like to do applications that work on 
> your desktop but also that can connect to the internet. The thing is, 
> I'd need to have some python scripts online in some server somewhere.
>
> Does any of the more experienced users know of any cheap python 
> hosting where python scripts can be used to test and practice?
>
> Thanks for any help.
>
> G.
>
>
>
> -------------------------------------------------------
> This SF.net email is sponsored by: The Robotic Monkeys at ThinkGeek
> For a limited time only, get FREE Ground shipping on all orders of $35
> or more. Hurry up and shop folks, this offer expires April 30th!
> http://www.thinkgeek.com/freeshipping/?cpg=12297
> _______________________________________________
> Pythoncard-users mailing list
> Pyt...@li...
> https://lists.sourceforge.net/lists/listinfo/pythoncard-users

Re: [Pythoncard-users] desktop - web apps

[Kevin A. <al...@se...>]

On Apr 27, 2004, at 11:23 AM, gaston wrote:

> Hi, I downloaded python carda about 2 weeks ago. I'm still doing the 
> tutorials, and changing the minimal app. : )
>
> The thing is, in the future, I'd like to do applications that work on 
> your desktop but also that can connect to the internet. The thing is, 
> I'd need to have some python scripts online in some server somewhere.
>
> Does any of the more experienced users know of any cheap python 
> hosting where python scripts can be used to test and practice?
>
> Thanks for any help.
>
> G.

http://www.python.org/cgi-bin/moinmoin/PythonHosting

ka

[Pythoncard-users] desktop - web apps

[gaston <ga...@nt...>]

Hi, I downloaded python carda about 2 weeks ago. I'm still doing the 
tutorials, and changing the minimal app. : )

The thing is, in the future, I'd like to do applications that work on 
your desktop but also that can connect to the internet. The thing is, 
I'd need to have some python scripts online in some server somewhere.

Does any of the more experienced users know of any cheap python hosting 
where python scripts can be used to test and practice?

Thanks for any help.

G.

RE: [Pythoncard-users] Refresh components

[Kevin A. <al...@se...>]

> From: Uwe Schmitt
>
> Hi,
>
> I wrote a litte GUI for steering some numerical calculations.
> PythonCard works fine, but I got one problem: How can I refresh
> the GUI inside an event triggered method ? I have:
>
>    def on_startbutton_mouseDown(self, event):
>
>        self.components.calcinfo.text="calculation started"
>        self.doCalc1() # needs some seconds
>        self.components.calcinfo.text="calculation finished"
>
> self.components.calcinfo is a TextField component.
>
> If I start this application, the first message does not appear
> before the calculation is started...
>
> Any hints ?
>
> Greetings, Uwe

Let's open up the widgets sample with the shell (widgets.py -s) and
experiment...

>>> fld = comp.fldTextField
>>> import time
>>> fld.text = 'hello world';time.sleep(3)
>>> fld.text = 'update me now';fld.Update();time.sleep(3)
>>> fld.text = 'with refresh';fld.Refresh();fld.Update();time.sleep(3)
>>> s = comp.txtStaticText
>>> s.text = 'hello world';time.sleep(3)

Calling Refresh and Update is safest because it forces the whole control to
be redrawn. The StaticText component actually contains an explicit Refresh()
call as part of its _setText method but I'm considering removing that. The
original idea was that StaticText is more likely to be used for the kind of
status messages you are doing above, so it would be nice to have it
automatically do the right thing. Of course, it really needs to call Update
as well for it to always work on all platforms, so I'll add that until a
decision is made on whether to drop automatic Refresh/Update in the future.

As an alternative you can use a statusBar. It should already do the right
thing as far as immediate updates are concerned.


BTW, do you have a whitelist-based mail block in place on your system? I
can't send you email directly without a bounce, so everyone who replies to
your emails on this list end up with a bounced message which is very
annoying. Here's a sample...

<sc...@nu...>:
134.96.7.8 does not like recipient.
Remote host said: 550 5.0.0 <sc...@nu...>... Spam address.
Giving up on 134.96.7.8.

ka

[Pythoncard-users] Refresh components

[Uwe S. <sc...@nu...>]

Hi,

I wrote a litte GUI for steering some numerical calculations.
PythonCard works fine, but I got one problem: How can I refresh
the GUI inside an event triggered method ? I have:

   def on_startbutton_mouseDown(self, event):

       self.components.calcinfo.text="calculation started"
       self.doCalc1() # needs some seconds
       self.components.calcinfo.text="calculation finished"

self.components.calcinfo is a TextField component.

If I start this application, the first message does not appear
before the calculation is started... 

Any hints ?

Greetings, Uwe
       

      

Re: [Pythoncard-users] new mailing list for PythonCard cvs checkins

[Kevin A. <al...@se...>]

For those that are interested, the list is working now. This is mainly 
for developers on the project that need to be aware of all the changes 
being checked in.

ka
On Apr 23, 2004, at 12:25 PM, Kevin Altis wrote:

> I've created a new mailing list so that anyone interested can be 
> notified automatically of cvs commits as they occur. This list will 
> not be archived.
>
> http://lists.sourceforge.net/lists/listinfo/pythoncard-cvs
>
> It doesn't appear the list is sending out messages yet, but I'm going 
> to wait at least 24 hours before submitting a support request to SF 
> staff.

[Pythoncard-users] No problem now:)

[Brian D. <deb...@ho...>]

#!/usr/bin/python

from PythonCardPrototype import model,dialog
import os,string

"""
    Brian Debuire
    Python Builder for PyGame Applications
    Pretty simple...but nice : )

    TODO LIST:
        - Handle file and dir overwriting
        - Fix the problem when selecting a background bitmap
        - Documentation
        - Handle more user events
        - Fix tab index
        - Bugs fix

    Any comments, ideas or critics please let me know
    deb...@ho...

"""

class PythonBuilder(model.Background):

    def on_openBackground(self, event):
        pass

    def on_buttonGenerate_mouseClick(self, event):
        """
            If the file already exists it'll be overwrited!
            If the directory already exists, an error will be produced!
            Maybe this could be fixed with an exception.
        """
        # Create the project directory
        os.mkdir(os.path.join('output',self.components.textFileName.text))
        # Create the main project file
        f = 
open(os.path.join('output',self.components.textFileName.text,self.components.textFileName.text+'.py'),'w')
        f.write(self.filestaff())
        # If selected, create a separated file with all classes and 
functions needed
        if self.components.checkBoxSepClasses.checked == 1:
            f = 
open(os.path.join('output',self.components.textFileName.text,self.components.textFileName.text+'Classes'+'.py'),'w')
            f.write(self.classes())
        # Show info about the project location
        dialog.messageDialog(self, 'Project 
'+self.components.textFileName.text+' saved to 
\\Output\\'+self.components.textFileName.text+' directory', 'Python Builder 
Message',dialog.ICON_INFORMATION,dialog.BUTTON_OK)


    def on_buttonExit_mouseClick(self, event):
        self.Close()

    def filestaff(self):
        """
            This is the skeleton of a pygame project file.
            Is there too many code lines???
        """
        text =  "#! /usr/bin/python\n\n"
        text +=  "import pygame"
        if self.components.textModules.text != '':
            text += "," + self.components.textModules.text
        text += "\n\n"
        text += "from pygame.locals import *\n\n"
        if self.components.checkBoxSepClasses.checked == 0:
            if self.components.textClasses.text <> '':
                for c in 
string.splitfields(self.components.textClasses.text,','):
                    text += "class "+c+":\n"
                    text += "    def __init__(self):\n"
                    text += "        pass\n\n"
        else:
            text +=  "import 
"+self.components.textFileName.text+"Classes.*\n\n"
        text += "def main():\n"
        text += "    pygame.init()\n"
        for mode in self.components.choiceDisplay.items:
            if mode == self.components.choiceDisplay.selected:
                text += "    screen = pygame.display.set_mode(("+mode+"))\n"
                break

        text += "    
pygame.display.set_caption(\'"+self.components.textCaption.text+"\')\n"

        if self.components.comboBack.selected == "black":
            text += "    back = pygame.Surface(screen.get_size())\n"
            text += "    back.fill((0,0,0))\n"
        elif self.components.comboBack.selected == "white":
            text += "    back = pygame.Surface(screen.get_size())\n"
            text += "    back.fill((255,255,255))\n"
        elif self.components.comboBack.selected == "bitmap":
            text += "    back = load_image(\"*.*\")\n"
            text += "    back.fill((0,0,0))\n"

        text += "    screen.blit(back,(0,0))\n"
        text += "    pygame.display.flip()\n\n\n\n"
        text += "    while 1:\n"
        text += "        for event in pygame.event.get():\n"
        text += "            if event.type == KEYDOWN:\n"
        text += "                return\n\n\n\n"
        text += "if __name__ == \'__main__\': main()"

        return text

    def classes(self):
        """
            A method for the functions and classes
        """
        text =  "import pygame\n\n"
        text += "from pygame.locals import *\n\n"
        text += self.extras()
        if self.components.textClasses.text <> '':
            for c in 
string.splitfields(self.components.textClasses.text,','):
                    text += "class "+c+":\n"
                    text += "    def __init__(self):\n"
                    text += "        pass\n\n"

        return text

    def extras(self):
        """
            A method that contains extra functions
        """
        text = ""

        if self.components.checkPng.checked == 1 or 
self.components.checkImage.checked == 1 or self.components.checkFont.checked 
== 1:
            text += "import os\n\n"
            
os.mkdir(os.path.join('output',self.components.textFileName.text,self.components.textDir.text))
        if self.components.checkPng.checked == 1:
            text += "def load_png(name):\n"
            text += "    fullname = 
os.path.join(\'"+self.components.textDir.text+"\', name)\n"
            text += "    try:\n"
            text += "        image = pygame.image.load(fullname)\n"
            text += "	 if image.get_alpha is None:\n"
            text += "	     image = image.convert()\n"
            text += "	 else:\n"
            text += "            image = image.convert_alpha()\n"
            text += "    except pygame.error, message:\n"
            text += "        print 'Unable to load image:', fullname\n"
            text += "        raise SystemExit, message\n"
            text += "    return image\n\n"
        if self.components.checkImage.checked == 1:
            text += "def load_image(name):\n"
            text += "    fullname = 
os.path.join(\'"+self.components.textDir.text+"\',name)\n"
            text += "    try:\n"
            text += "        image = pygame.image.load(fullname)\n"
            text += "    except pygame.error, message:\n"
            text += "        print \"Unable to load image :\",fullname\n"
            text += "        raise SystemExit, message\n"
            text += "    image = image.convert()\n"
            text += "    return image\n\n"
        if self.components.checkFont.checked == 1:
            text += "def load_font(name):\n"
            text += "    try:\n"
            text += "        fullname = 
os.path.join(\'"+self.components.textDir.text+"\',name)\n"
            text += "    except pygame.error, message:\n"
            text += "        print \"Unable to load font :\",fullname\n"
            text += "        raise SystemExit, message\n"
            text += "    return fullname\n\n"
        return text

if __name__ == '__main__':
    app = model.PythonCardApp(PythonBuilder)
    app.MainLoop()

[Pythoncard-users] attached file problem

[Brian D. <deb...@ho...>]

<html><div style='background-color:'><DIV class=RTE>Hello there,</DIV>
<DIV class=RTE>&nbsp;</DIV>
<DIV class=RTE>I am having problems sending an attached file to the mailing list, and i dont know why.</DIV>
<DIV class=RTE>&nbsp;</DIV>
<DIV class=RTE>I someone can help me, please let me know.</DIV>
<DIV class=RTE>&nbsp;</DIV>
<DIV class=RTE>Thanks</DIV>
<DIV class=RTE>&nbsp;</DIV>
<DIV class=RTE>Brian</DIV></div><br clear=all><hr>Add photos to your messages with  <a href="http://g.msn.com/8HMAEN/2749??PS=">MSN 8. </a> Get 2 months FREE*.</html>