Try self.SetSizerAndFit(sizer)

# staticmethod() and classmethod()
# make it easier to call one class method

class ClassA(object):
def test(this):
print this
test = staticmethod(test)

ClassA.test(4) # 4

It's like putting single image on PyGame "liquid canvas" giving an eerie visual effect. Here is short code:
# PyGame liquid effect on single image
# just old PyGame example modified
# module...

niek_e is correct, successful compression depends on the source and the compression algorithm. Here is one example of large repeating text that the zip algorithm fails with, but bz2 compression...

One rude awakening with Python3 will be the frequent use of bytearrays instead of strings. It does this to handle international unicode better.

Here is how you deal with this:
# get code of...

Retrieve the text from Tkinter Text widget line by line:
# explore the Tkinter Text() widget
# getting text 'line by line' from the widget
# use ctrl+c to copy, ctrl+x to cut selected text,
#...

In the previous example I meant 'Tkinter' rather than 'Tinter'. This however is PyQT example looking at the tooltip widget and some colored text:
# pqt_tooltip1.py
# exploring PyQT's tooltip and...

PyGame isn't the only toolkit you can use for animation. If you use Python 3.1 and still wait for PyGame to be available, you can use Tinter for some simple animations:
# Tk_CanvasMove1.py
#...

Put PyQT widgets on a color background using canvas:
# pqt_CanvasBackGround1.py
# use PyQT's paintEvent to create full frame canvas
# widgets will use the canvas as background
# Henri

import...

Look at PyQT's progress bar widget and simple timer to drive it:
# pqt_progressbar1.py
# explore PyQT's progress bar and simple timer widgets
# Henri

import sys
from PyQt4.QtCore import *...

Exampled code for PyQT's multiline text entry widget:
# pqt_TextEdit1.py
# explore PyQT's QTextEdit multiline text entry box
# click right mouse button in edit area for popup menu
# Henri
...

Sometimes it's nice to attach label to entry widget. One way to do this is with class object:
# pqt_EntryLab1.py
# create labeled data entry areas
# tested with Python 3.1 and PyQT 4.5
# Henri
...

Quick look at PyQT's QListWidget, commonly called 'list box'. Also shows how to create multiple buttons with the for loop. Here is short example:
# pqt_listbox2.py
# explore PyQT's QListWidget...

One nice graphical way to select calendar date is with the calendar widget. Here is the PyQT example:
# explore the PyQT QCalendarWidget widget
# tested with Python 3.1 and PyQT 4.5
# Henri
...

One more simple way to present data in table form:
# use PyQT's QTableWidget, QTableWidgetItem and setItem
# to show data in simple table format
# tested with Python 3.1 and PyQT 4.5
# Henri
...

Exploring PyQT's QListView and QAbstractListModel. This little code pops up posssible words from word list as you type:
# using PyQT's QListView and QAbstractListModel
# to match partially typed...

Presenting data in the form of a table that can be sorted by column is slick, and relatively easy to do with PyQT's QTableView widget:
# use PyQT's QTableView and QAbstractTableModel
# to present...

Another look at PyQT's canvas:
# pqt_drawtext2.py
# playing with PyQT's QPainter
# setPen, setBrush, setFont, drawRect and drawText

import sys
# simpler import
from PyQt4.QtCore import *...

Looking at PyQT's grid layout manager:
# pqt_gridlayout1.py
# start of small calculator

import sys
# simple general import
from PyQt4.QtCore import *
from PyQt4.QtGui import *

class...

The PyQT GUI toolkit's QLabel widget can actually display HTML formatted text directly. This allows for relatively easy formatting of text:
# PyQT's QLabel widget can display html formatted text
...

Similar to the PyQT GUI example above, the Thinter GUI toolkit also has input dialogs that validate the input:
# Python GUI toolkit Tkinter has 3 different data input dialogs:
#...

Just bought used Dell XP notebook for class work and installed Python 3.1 and then PyQT4 form:
http://www.riverbankcomputing.co.uk/software/pyqt/download
Windows installer (14JUL2009):...

Shows you how to drag one of wxPython's widgets with the mouse pointer:
# use mouse to drag the wx.Panel() widget
# wx.Panel(parent, id, pos, size, style)

import wx

class MyFrame(wx.Frame):
...

Sneekula left one small starter editor somewhere around DaniWeb. So I took it and modified it to use the wxPython toolbar with icon images rather than Snee's menu bar. The images come from...

Well, if you do web-page designing, you will be familiar with the repeating image tile wallpaper. You can do something similar to give your wxPython frame or panel very sexy backgrounds. I leaned...

Nice stuff there Fuse and Ene!
Here is my contribution, showing you how easy it is to have wxPython display an image from image file:
# show .jpg .png .bmp or .gif image on wx.Panel

import wx
...

You can do it with label and use spaces of the desired background colour. Here is example:
# Tkinter progress bar experiment
# using label and string of spaces

import Tkinter as tk

root =...

The problem with time.sleep(sec) is that your whole program sleeps unless you thread the background action. So BearofNH's use of time.time() is more appropriate.

Sure Python has multidimensional arrays, they are called lists of lists or tuples of tuples etc.
mlist1 = [
[7, 12, 23],
[22, 31, 9],
[4, 17, 31]]

print mlist1 # [[7, 12, 23], [22, 31, 9],...

Expanding on mawe's formula builder, this is my contribution to the equation solver:
# evaluate equation like 3x^2+2(3x-2) = 0

import re

# look for digit before alpha and '('
pattern =...

The two functions
num = input("Enter a number: ")
and
name = raw_input("Enter a name: ")
are for the user to enter number or name from the console.

Please use code tags. At end of your code...

You have two similar lists and want to see what items are in list1 that are not in list2 and vice versa. The trick is to convert them into sets and take the difference:
color_list1 =...

This program uses Python module re for splitting a text file into words and removing some common punctuation marks. The word:frequency dictionary is then formed using try/except. In honor of 4th of...

Write a hex-dump program, where you read a file byte by byte and display the value as a hexadecimal number (base 16). Display about 16 bytes on each row and in a second column next to it show any...

Design a text driven adventure game. Draw a map with features like meadows, woods, mountains, rivers, lakes, caves, cottages and such. You know the map, the player does not! Start in the center...

If you have five dice, how often do you have to throw (average) the dice to get a hand of four sixes? Try with other poker hands too.

Similar to the color project but with frequency of a tone. The computer plays a tone with random audible frequency. The user tries to match this frequency. In a GUI project can use a slider. ...

This project takes wxPython or maybe Tkinter for GUI. Let the computer pick random color selecting random RGB value. The user has to match the color picking RGB (red, green, blue) values that...

Build a Memory Game. You shortly flash up a number of random words. Lets say three or five, and then ask the player to recall the words from a mutli choice answer. Do that a ten or twenty times...