what does %25f mean?
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it will reserve the 25 space for your number.
example:
print '%25.2f' % (1.222,)
It will use 25 space and 2 digit of your 1.222result is:
1.22
cheers,
pujo
On 10/24/05, Shi Mu <[EMAIL PROTECTED]> wrote:
what does %25f mean?_
I typed:
landUse = {'res': 1, 'com': 2, 'ind': 3, "other" :[4,5,6,7]}
and when i checked landUse, I found it become:
{'ind': 3, 'res': 1, 'other': [4, 5, 6, 7], 'com': 2}
why the order is changed?
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you work with dictionary.
In dictionary you work with the key to get your value. You don't care about how python arrange the key.
your key here are: 'res', 'com', 'ind', and 'other'
when you want to get your value you just type:
landUse['res'] this you will get 1
landUse['ind'] this you will get 3
Shi Mu <[EMAIL PROTECTED]> 2005-10-24 09:13:
> why the order is changed?
By definition a dictionary has no order.
jem
--
Jan Erik Moström, www.mostrom.pp.se
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Shi Mu wrote:
> I typed:
> landUse = {'res': 1, 'com': 2, 'ind': 3, "other" :[4,5,6,7]}
> and when i checked landUse, I found it become:
> {'ind': 3, 'res': 1, 'other': [4, 5, 6, 7], 'com': 2}
> why the order is changed?
the docs warn you about this.
A dictionary stores its values based on the ke
Dear Python's Gurus
I have this nice over-my-head scripts
1. It loads two files (daifmaster.txt and sahihmaster.txt)
HELP ONE
Please I NEED to print these unified two sorted files as one = call it
dsmaster.txt
2. It load file (Kanzmaster.txt) and sort it
HELP TWO
Please I need to print this sor
what does the following sentence mean? does it mean i can not use
double-quoted string?
SyntaxError: EOL while scanning single-quoted string
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please show us the code
cheers,
pujo
On 10/24/05, Shi Mu <[EMAIL PROTECTED]> wrote:
what does the following sentence mean? does it mean i can not usedouble-quoted string?SyntaxError: EOL while scanning single-quoted string
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is there any simple syntax for joining strings such that if any (or
all) of the params is white space or None, it won't be included in the
resulting string?
e.g. str1, str2, str3 = "foo", "bar", None, if delimiter is " " would
result to "foo bar"; str1, str2 = None, None would result to None.
TIA
Vincent Gulinao wrote:
> is there any simple syntax for joining strings such that if any (or all)
> of the params is white space or None, it won't be included in the
> resulting string?
>
> e.g. str1, str2, str3 = "foo", "bar", None, if delimiter is " " would
> result to "foo bar"; str1, str2 =
I got confused by the following information from the help for "FIND":
find(s, *args)
find(s, sub [,start [,end]]) -> in
what does *args mean (especially the '*')?
also, in the sub, why put a comma before start?
what does 'in' mean?
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I did this and it worked
1. However will be nice to print output into filenames without me using
>
2. Another problem: when run in Linux the output is OK BUT when runs in
windows active python the output is no good
# modify1: PRINT THE ABOVE CALL IT SORTEDkanz.TXT
I commented the last lines in th
Is there any difference if I remove the '/'
from the following statement?
intMatrix2 = [[1,1,2,4,1,7,1,7,6,9],\
[1,2,5,3,9,1,1,1,9,1],\
[0,0,5,1,1,1,9,7,7,7]]
print intMatrix2
I removed one '\' and it still works.
So what is the use of '\'?
Please don't duplicate post to python-tutor and comp.lang.python. You are
getting two sets of answers to all your questions which wastes the time of
those kind enough to reply.
Thanks,
Kent
Shi Mu wrote:
> Is there any difference if I remove the '/'
> from the following statement?
> intMatrix2
I have a list of lists of constant width (2 rows). I need to:
1. delete sub-lists with None element
2. sort it by any sub-list index
say: [ ['c','d'], ['g',None], ['a','b',], ['e','f']
if sorted using 2nd index: [ ['a','b'], ['c','d'], ['e','f'] ] (same result for 1st index for this example)
TIA
I have done scripts for decompressing MP3 in the past. I normally follow
a fork() exec() subprocess scheme, and this helps me gain about 30%
improvement. I'm not an expert, but I have read that CPU time will be
better used by several processes than for just one, and while one
process is waiting
What I usually do is convert them all to UNIX epoch and then substact
the values in seconds:
>>> import time
>>> early = time.time()
>>> sleep(5)
>>> time.sleep(5)
>>> late = time.time()
>>> print late - early
5.7889997959
>>>
Jonas Melian wrote:
> I would get the local time of a country
Hugo González Monteverde wrote:
> I have done scripts for decompressing MP3 in the past. I normally follow
> a fork() exec() subprocess scheme, and this helps me gain about 30%
> improvement. I'm not an expert, but I have read that CPU time will be
> better used by several processes than for jus
Hi,
The '\' character is used to break lines and ask the interpreter to
treat them as a single line, but Python is smart enough to allow
breaking lines inside parenthesis and braces...so:
NOT WORKING:
>>> a, e, i, o, u = 1, 2,
Traceback (most recent call last):
File "", line 1, in ?
ValueE
Anyway, I found a library for working with time zones
http://pytz.sourceforge.net/
Hugo González Monteverde wrote:
> What I usually do is convert them all to UNIX epoch and then substact
> the values in seconds:
>
> >>> import time
> >>> early = time.time()
> >>> sleep(5)
> >>> time.sleep(5)
> >
Thanks for this insight into classes. It often takes me a few days to absorb and respond because my job limits the time I can give to programming. But thanks again for taking the time to respond in a meaningful way.
I guess I could say that you changed my world when it comes to programming (sorr
I got confused by the following information from the help for "FIND":
find(s, *args)
find(s, sub [,start [,end]]) -> in
what does *args mean (especially the '*')?
also, in the sub, why put a comma before start?
what does 'in' mean?
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Tutor maillis
On Mon, 24 Oct 2005, Shi Mu wrote:
> what does %25f mean?
Hi Shi Mu,
Without more context, I'd have to guess that this looks like a format
string. Here's more information about them:
http://www.python.org/doc/lib/typesseq-strings.html
But can you show us where you saw this "%25f" thing
Hi all,
I've started the wxPython tutorials and have hit a problem already.
When run from IDLE or by calling the script from the command line with
[EMAIL PROTECTED]:~/wxpy$ python helloWorld.py
the script works fine, generating a small text editor. Making the file
executable and including the
> > I typed:
> > landUse = {'res': 1, 'com': 2, 'ind': 3, "other" :[4,5,6,7]}
> > and when i checked landUse, I found it become:
> > {'ind': 3, 'res': 1, 'other': [4, 5, 6, 7], 'com': 2}
> > why the order is changed?
>
> the docs warn you about this.
Hi Shi,
By the way, here's a post from a lon
> this one fails:
> [EMAIL PROTECTED]:~/wxpy$ cat helloWorld.py
>
> #!/usr/bin/python
Hi Matt,
Ah, good for showing that cat command: it gave enough hints that we can
tell what's going on.
Take out the leading empty space in your file; it's interfering with the
magic line '#!/usr/bin/python'.
On 10/24/05, Shi Mu <[EMAIL PROTECTED]> wrote:
> I got confused by the following information from the help for "FIND":
> find(s, *args)
> find(s, sub [,start [,end]]) -> in
Hello Shi Mu,
this is the help for the function find in the string module, which is
slightly out of date. Better you use
Danny Yoo wrote:
> Hope this helps!
Helped a lot. Shows that syntax errors aren't always visible (like
whitespace) and that I should know better than to attempt anything
before having at least one cup of coffee.
Thanks!
Matt
--
Matt Richardson
IT Consultant
College of Arts and Letters
CSU S
Hope this is not too off topic:
I noticed that the Python in a Nutshell book is version 2.2 and a few
years old. Does anyone know if there are plans to bring out a new
edition anytime soon? I checked the O'reilly page and didnt find
anything, also googled it.
If anyone knows anything let me know.
I've been reading about composition vs inheritance, and went back to
"Learning Python" to look at something I found very confusing a year
ago. Turns out I still find it very confusing :)
Try this example ecology simulation by Kirby Urner:
http://mail.python.org/pipermail/edu-sig/2000-April/000
[EMAIL PROTECTED] wrote:
> Hope this is not too off topic:
> I noticed that the Python in a Nutshell book is version 2.2 and a few
> years old. Does anyone know if there are plans to bring out a new
> edition anytime soon? I checked the O'reilly page and didnt find
> anything, also googled it.
> A dictionary stores its values based on the keys. Internally Python
> sorts the keys to make the lookup meet performance expectations.
>
> You can not expect a dictionary to return keys in the other you added
> them. If you want that, store the items as tuples in a list.
Or you can sort the k
> what does the following sentence mean? does it mean i can not use
> double-quoted string?
> SyntaxError: EOL while scanning single-quoted string
No, it means you didn't correctly terminate the string with a matching
quote.
The error is slightly ambiguous, the word 'single' here means there is o
> find(s, sub [,start [,end]]) -> in
>
> what does *args mean (especially the '*')?
*args means that a variable number of arguments can be provided.
The exact nature of those being described in the next line.
So:
find =(s,sub)
find(s,sub,start)
find(s,sub,start,stop)
are all valid
> also, in t
> Is there any difference if I remove the '/'
You mean the '\' I assume?
In this case no difference whatsoever because Python
will keep on looking for the matching closing ']'
> intMatrix2 = [[1,1,2,4,1,7,1,7,6,9],\
> [1,2,5,3,9,1,1,1,9,1],\
> [0,0,5,1,1,1,9,7,7,7]]
>
> Anyway, I found a library for working with time zones
> http://pytz.sourceforge.net/
Thanks for pointing this one out, it looks good.
As someone who once commisioned a research paper on Time Zones and
programming I must say this looks like one of the most complete timezone
sites around. Howeve
> I noticed that the Python in a Nutshell book is version 2.2 and a few
> years
> old. Does anyone know if there are plans to bring out a new edition
Disclaimer: I know nothing of O'Reilly or Alex Martelli's plans!
But from experience of my own book it takes a good year to 18 months
to do a full
For all of them --- not guaranteed that you'll be able to achieve the optimum..
My solution is basically a greedy algorithm: Make a list of (artist,
tracks) pairs, and sort descending by len(tracks). Then iteratively:
1. Take the next track from the first artist on the list.
2. Move that artist
Hi,
I am having some trouble with tkinter.
I am creating a filled set of entry boxes so that a user can adjust certain
data if desired. I would prefer that the box containing these data be separate
from the main GUI.
The problem is that when I specify that the frame be part of root the data
a
On 25/10/05, mdcooper <[EMAIL PROTECTED]> wrote:
> The problem is that when I specify that the frame be part of root the data
> appears in the entry boxes (using textvariable = StringVar()) but if a second
> Tk() root is specified, the entry boxes appear, but there is no data. I cannot
> figure out
i have a generic script that is using several modules on windows and linux boxes. i need to have the scripts test if a module is installed, and then if not - then to install the module. can anyone give me a headsup on how to test for a module, returning something to indicate whether or not it is in
> The problem is that when I specify that the frame be part of root the data
> appears in the entry boxes (using textvariable = StringVar()) but if a
> second
> Tk() root is specified, the entry boxes appear, but there is no data. I
> cannot
> figure out why.
Create your new dialog as a child of
Ed Hotchkiss wrote:
> i have a generic script that is using several modules on windows and
> linux boxes. i need to have the scripts test if a module is installed,
> and then if not - then to install the module. can anyone give me a
> headsup on how to test for a module, returning something to i
Ed Hotchkiss wrote:
> i have a generic script that is using several modules on windows and
> linux boxes. i need to have the scripts test if a module is installed,
> and then if not - then to install the module. can anyone give me a
> headsup on how to test for a module, returning something to i
Not sure what IIUC stands for, but I am, indeed, running windows. XP Home Edition, in fact, with Python 2.4.2 finalOn 10/24/05, Kent Johnson <
[EMAIL PROTECTED]> wrote:Hugo González Monteverde wrote:> I have done scripts for decompressing MP3 in the past. I normally follow
> a fork() exec() subproc
Orri Ganel wrote:
> Not sure what IIUC stands for, but I am, indeed, running windows. XP
> Home Edition, in fact, with Python 2.4.2 final
If I Understand Correctly
http://www.acronymfinder.com/ is helpful here.
Kent
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Sorry, didn't see your reply until now...
the directory section can go either in your main apache config file (in my
case, /etc/httpd/conf/httpd.conf ) OR in a separate file in the conf.d
directory. In my case, I have a python.conf file in /etc/httpd/conf.d/ that
contains the following:
LoadM
Vincent Gulinao said unto the world upon 2005-10-24 09:29:
> I have a list of lists of constant width (2 rows). I need to:
> 1. delete sub-lists with None element
> 2. sort it by any sub-list index
>
> say: [ ['c','d'], ['g',None], ['a','b',], ['e','f']
> if sorted using 2nd index: [ ['a','b'], ['
On 25/10/05, Brian van den Broek <[EMAIL PROTECTED]> wrote:
> To sort by the second item, try
>
> >>> def sort_by_second(sequence):
> decorated = [(x[1], x) for x in sequence]
> decorated.sort()
> return [x[1] for x in decorated]
With python2.4, you can use the key= argume
On 25/10/05, Brian van den Broek <[EMAIL PROTECTED]> wrote:
> To sort by the second item, try
>
> >>> def sort_by_second(sequence):
> decorated = [(x[1], x) for x in sequence]
> decorated.sort()
> return [x[1] for x in decorated]
With python2.4, you can use the key= argume
John Fouhy said unto the world upon 2005-10-24 22:18:
> On 25/10/05, Brian van den Broek <[EMAIL PROTECTED]> wrote:
>
>>To sort by the second item, try
>>
>> >>> def sort_by_second(sequence):
>>decorated = [(x[1], x) for x in sequence]
>>decorated.sort()
>>return [x[1] for
I can not understand the use of "cell in row" for two times in the code:
# convert the matrix to a 1D list
matrix = [[13,2,3,4,5],[0,10,6,0,0],[7,0,0,0,9]]
items = [cell for row in matrix for cell in row]
print items
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