You can create myarray[x][y][z], but you still have to associate with the sphere object, that is where the dictionary mapping comes in handy.

You can include coordinate z into your key tuple by simply expanding vegaseat's code:
# create a large number of spheres referencing them
# with a (x, y, z):sphere_object dictionary pair

import...

Your area formula for regular polygons should be:

area = ((length**2) * numSides)/(4 * (math.tan(math.pi/numSides)))
Your result will be square units of whatever units of measurement your sides...

Be aware that Python25 and Python26 use different MS C compilers and so do the modules they use. The C code syntax has to match these compilers, as they are not compatible.

Try self.SetSizerAndFit(sizer)

Are you usng Python2 or Python3?
Are your positive numbers integers or floats?

Why so complicated?
Using a similar english dictionary file:
# mydict.txt has one English word per line
# about 74500 in total
mydict = open("mydict.txt", "r").readlines()

print(mydict[:10])...

The reason you want to make something private to the class is to keep it from easily spilling out into external code. So pseudo-private will do one good job. Remember it's called private, not...

Also with Python3 you don't have to use
fahrenheit = (9.0 / 5.0) * celsius + 32
you can just use
fahrenheit = (9 / 5) * celsius + 32
since '/' is now floating point division and '//' is integer...

# 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

One of the solutions is pretty straight forward, with easy logic:
list1 = [[1,2,3],[4,5,6],[7,8,9],[10,11,12]]
list2 = [1,2,3,4,11]

list3 = []
# q1 is each sublist in list1
for q1 in list1:
...

Vary bad manners to hijack this thread for such question.

Start your own thread and give more info!

Similar to jice's code:
# simply ignore index zero
pos = [' '] * 11
print( pos )

POS = 1

pos[POS] = '->'
print( pos )

At least for some time, it would be very nice if people indicated which version of Python they are using.

Extension .pyd is used for C compiled library files for Python.

I would say yes, unless your Operating System uses disk space as virtual memory.

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...

Also the online book "dive into python" has been mostly
rewritten for Python3 (check appendix A for 2to3 diffs):
http://diveintopython3.org/

Swaroop C.H. has rewritten his excellent beginning Python tutorial for Python3:
http://www.swaroopch.com/notes/Python_en:Table_of_Contents

There is example at:
http://www.daniweb.com/forums/showpost.php?p=947978&postcount=46
that might work.

I like wxPython. However, if you use the newer Python 3.1, it could take long time for wxPython to be available. So now I am learning PyQT.

Again, Tkinter isn't bad to learn in the beginning,...

Function raw_input() would force the user to type in the entire XML code. I don't think you want this.

Normally the XML code would come from file, something like this:
fin = open("Myxml.xml",...

You got the right idea, but if you insist on recursion, you have to follow certain rules:
#s=raw_input("Enter a number to simplify: ")
s = '123456789' # for test

def loop(s, p=0):
for i in...

You can use 32x32 Windows .bmp file instead of .ico file.

Hint, in while loop turn the number string into list of individual digits and sum the list until the sum is less than 10, then break.

Careful here, you are using strings(characters) and integers. ...

I have Python2.5.4 and Python3.1 working on the same XP machine.
Programming editors (IDE) like IDLE may have to be convinced with batch file to use the correct Python version.

Here is example:...

Only potential problem with place() is, that it does not resize with window.

The Tkinter GUI toolkit has data input dialogs that will validate your input, as shown here:
# Python GUI toolkit Tkinter has three different data input dialogs:
# tkSimpleDialog.askstring(title,...

Yes, instead of using geometry manager pack() or grid(), use place(x, y) for layouts. Note that place(x, y) is absolute, and coordinates x or y can go negative to shift the widget out off the...

You can use this:
mylist = [
[1, 9, 22, 28, 0.69887889000000003, 0.98993399999999998, 2],
[4, 27, 6, 22, 0.81186093999999998, 1.1221458099999999, 2],
[4, 27, 100, 30, 0.74796748000000002,...

Pick your project and use C++ to write your code. There will be the time that is rather obvious when you want to switch to Python.

Python version 3.0 has modernized the language and much of the old code examples will not work. You can use a little utility program called 2to3.py to change old syntax to new syntax.

This perhaps shows how you can do this:
http://www.daniweb.com/forums/showpost.php?p=714874&postcount=100

There is usually info in the MS-HTML-Help file
wx.chm
if wxPython does not have one particular feature.

Also look at:
http://wiki.wxpython.org/index.cgi/FrontPage
This is the API ref, very...

As far as I understand, steganography would be to change each byte of image file just one small amount, so the picture essentially looks the same. Comparing it with the original picture would reveal...

Something like this will do:
for line in wordlistfile:
wordlist.append(line.strip())

Simply use this:

# list all the modules Python currently knows about ...
help("modules")

At first blush i would say this might do:
# compare these two list set and convert
# w_b into [0.5, 0, 0.5, 0]

a = ['a', 'b', 'c', 'd']
w_a = [0.25, 0.25, 0.25, 0.25]

b = ['a', 'c']
w_b =...

Proof that [::-1] works for spelling string in reverse:
s1 = "racecar"
s2 = "kayak"

print s1, s1[::-1]
print s2, s2[::-1]

:)

Functions sort() and sorted() reside in the core of the Python interpreter which is written in C and compiled. On Windows the Python core is for instance in the dynamic link library called...