v 3.0 mpkg

[John Forse]

 Does anyone know if Python v3.0 is available as an .mpkg installer  
for Mac 10.5.6. I have used 2.5 & updated to 2.6.1 this way, but can't  
find any reference to one on the Python.org download site. I've  
downloaded the Python 3.0 folder but can't follow how to install it  
without a .mpkg file. Any help would be really appreciated.

Regards
John



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string to list conversion

[John Forse]

I need to convert an input string say '' to a list of the form  
['' ,]. If I use list(stringname), I get ['x','x','x','x'] ;  
list.join() is an error;  and str.join() won't use lists. I do need  
the comma after the string. Is there a simple solution?

Regards
John



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Fwd: IDLE error on 3.0.1

[John Forse]

Regards
John



Begin forwarded message:


From: John Forse 
Date: 20 February 2009 02:46:19 GMT
To: python-list@python.org
Subject: IDLE error on 3.0.1

Occaisionally, if I mistype in python shell or try to copy & paste a  
line there, I get a permanent hang with the error below. It isn't  
corrected by quitting IDLE, but is put right with a restart.  I am  
running 3.0.1 on Mac 10.5.6. Is this a bug, as it never happened on  
the same system with 2.5 &2.6.1 ?

Is there another way to prevent this?
Regards
John Forse

IDLE cant bind TCP/IP port 8833 which is necessary to communicate  
with it's python execution server. Either no networking is installed  
on this computer or another process(another IDLE?) is using the  
port. Run IDLE with the -n command line switch to start without a  
sub-process and refer to help/IDLE Help 'Running without a sub- 
process' for further details


PS I AM connected to the network at the time and Help/Idle help is  
greyed-out on my IDLE. I've tried entering -n to IDLE on the initial  
blank window, but it seems to make no difference to the problem. I  
don't understand what is happening.--
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getting tut. example to work

[John Forse]

I'm trying some examples from the language ref sections on the site in  
the process of learning some python in 3.0.1. I've tried to run both  
of the samples below ,but the only printout is "generator object chain  
at 0x11f4dc8" whether I use print() or not . How do I use the sample  
to produce the expected printout a b c d e f.

 Thanks
John F
A
def chain(*iterables):
for it in iterables:
for element in it:
print(element)
yield element

def main():
chain('abc','def')

main()
B
alternative
import itertools
itertools.chain('abc','def')



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