How to accelerate python application GUI speed

[ulysses]

Hi,all

I use wxPython make a bittorrent client. I find wxPython very slow and
use many many memory.
When app start, it need 19MB memory. I only use common GUI components.
Python is a really good
programming language. But how to do a small,smart, efficency GUI in
win32,it's a big question.

I need make GUI,core code is bittorrent code. I can't change it.it's
really good code.

I read book 'Python Programming on Win32' ,I get following idea. I
test it.

1. Use wxpython ,it's successful,but very slow .

2. use python for delphi. I test it, but it need embed python code to
delphi. So need
change original code.Actually I don't know how to change .it's big
project.

3. User win32com, make a com server by delphi. com server have form.
make python code
as com client. I make a com server and invoke the server by
pythonwin. but the form
can't show. :( anyone do it ,could you share you code to world.

4. use pythonwin. mfc or win32gui framework. I check the demo code,
it's very complex.
you know I hate MFC. it's a joke. i like VCL so much.

5. I have a another idea. use wxWindows (c lan) build a GUI. embed
python code .
or embed wxWindows code to python by SWIG. I have't test it. if you
have do it.
Please tell us.

Thanks.

Ulysses
ul********@yaho o.com.cn

[Wilk]

ul********@yaho o.com.cn (ulysses) writes:

Hi,all

I use wxPython make a bittorrent client. I find wxPython very slow and
use many many memory.
When app start, it need 19MB memory. I only use common GUI components.
Python is a really good
programming language. But how to do a small,smart, efficency GUI in
win32,it's a big question.

An solution is to make a web application and use a tiny browser like
kmeleon.

bye

--
William Dode - http://flibuste.net

[John J. Lee]

ul********@yaho o.com.cn (ulysses) writes:
[...]

Python is a really good programming language. But how to do a
small,smart, efficency GUI in win32,it's a big question.
http://venster.sourceforge.net/

[...] 4. use pythonwin. mfc or win32gui framework. I check the demo code,
it's very complex. you know I hate MFC. it's a joke. i like VCL so
much.
Well, if you hate win32 also, then you won't like venster.

5. I have a another idea. use wxWindows (c lan) build a GUI. embed
python code . or embed wxWindows code to python by SWIG. I have't
test it. if you have do it. Please tell us.

Interesting idea.
John

[John J. Lee]

Wilk <wi******@OUTfl ibuste.net> writes:

ul********@yaho o.com.cn (ulysses) writes: [...] An solution is to make a web application and use a tiny browser like
kmeleon.

Or MSIE, possibly using HTA.
John

[Mark Roach]

On Wed, 03 Sep 2003 06:32:42 -0700, ulysses wrote:

Hi,all

I use wxPython make a bittorrent client. I find wxPython very slow and
use many many memory.
When app start, it need 19MB memory. I only use common GUI components.
Python is a really good
programming language. But how to do a small,smart, efficency GUI in
win32,it's a big question. [snip] 5. I have a another idea. use wxWindows (c lan) build a GUI. embed
python code .
or embed wxWindows code to python by SWIG. I have't test it. if you
have do it.
Please tell us.

Swig is how wxPython works already. If you wanted to do the whole gui in
C++, and just have python launch the code, you can do an extension pretty
easily, see my wiki entry here:
http://wiki.wxpython.org/index.cgi/C_2b_2bExtensions
(I'm not sure that this will make any difference wrt memory usage though.)
I think that letting C++ "drive" your code will be a significantly greater
time investment, I'm not sure how much of an effort it is to get the
python mainloop and the wxWin mainloop to work together, but since it is
already done for me with wxPython, I don't think I'll go trying to find
out either :-)

-Mark

[Jim Dabell]

ulysses wrote:

I use wxPython make a bittorrent client. I find wxPython very slow and
use many many memory.
When app start, it need 19MB memory. I only use common GUI components.
Python is a really good programming language. But how to do a small,smart,
efficency GUI in win32,it's a big question.

In my opinion, the Qt toolkit is far better in terms of quality and speed
than wx/tk/whatever. It's also dead simple to code for. The Python
bindings are here: <URL:http://www.riverbankco mputing.co.uk/pyqt/>.

Check out the license first, some people don't like any of the choices
available.
--
Jim Dabell

[Brian Kelley]

You will always take a hit using threading and a gui. I agree with your
complaints about wxPython's size though. I'm not quite sure what you
mean by wxPython is "slow" though. Do you mean that running your code
inside wxPython is slow?

Qualitatively, when using wxPython and QT I've encountered about a 30%
speed hit when using threads.

I'll assume that your bit-torrent code has a pretty simple interface,
such as "download this file to here", "I'm X percent done" and "cancel
the download"

If this is the case, you might be interested in using wxProcess to spawn
a new python process and then monitor the new processes stdout to update
a progress bar or a dialog box.

The benefits are as follows:
1) Easy to kill a process.
2) The process doesn't get blocked by the GIL and can run with (just
about) full CPU power.

Downsides:
1) python needs to be in your path and the python path has to be
set up correctly to load your code.
2) wxProcess doesn't work on OS X yet.

My code is pretty ugly, but I am using it in a production environment.
Let me know if you want me to post it here (it comes with an example).

--
Brian Kelley bk*****@wi.mit. edu
Whitehead Institute for Biomedical Research 617 258-6191

[Wilk]

jj*@pobox.com (John J. Lee) writes:

Wilk <wi******@OUTfl ibuste.net> writes:

ul********@yaho o.com.cn (ulysses) writes:

[...]

An solution is to make a web application and use a tiny browser like
kmeleon.

Or MSIE, possibly using HTA.

What is HTA ? I thought about an HTTPServer that could work with any
browser.

--
William Dode - http://flibuste.net

[Cousin Stanley]

| What is HTA ?

Wilk ....

HTA ... HTML Application

http://msdn.microsoft.com/workshop/a...bjects/hta.asp

Example containing a bit of VBScript
to access some common applications
under Windows ...

http://fastq.com/~sckitching/HTML/Start_Page.hta

--
Cousin Stanley
Human Being
Phoenix, Arizona

[Cousin Stanley]

| But you can use Python just as easily.
|
| <script language="Pytho n">
| ...
| </script>

John ....

I did that example HTA using VBScript about 3 years ago
before I even knew that Python existed and just posted it
as a handy example to illustrate basically what a local
HTA could do ....

It would be WAY cooler to do it in Python,
and now that I know it's possible I'll try it ....

--
Cousin Stanley
Human Being
Phoenix, Arizona