On Feb 26, 7:01 pm, NanoThermite FBibustards
wrote:
> @Xah Lee, he only tell one point, fast interpreter avoiding Edit-
> Compile-Run cycle, and make it INTERACTIVE, the guy did not teach
> nothing of design. The principle was first given by Margaret Hamilton
> and Zeldin.
>
Bret's main point is t
Hi All,
I've heard of Java CPUs. Has anyone implemented a Python CPU in VHDL
or Verilog?
-Brad
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John Salerno wrote:
> rick wrote:
>> Why can't Python have a reverse() function/method like Ruby?
>
> I'm not steeped enough in daily programming to argue that it isn't
> necessary, but my question is why do you need to reverse strings? Is it
> something that happens often enough to warrant a me
Fredrik Lundh wrote:
> rick wrote:
>
>> The Ruby approach makes sense to me as a human being.
>
> do the humans on your planet spend a lot of time reversing strings? it's
> definitely not a very common thing to do over here.
On our planet, we're all dyslexic. We tend to do things 'backwards' so
Steven D'Aprano wrote:
> Gah!!! That's *awful* in so many ways.
Thanks... I'm used to hearing encouragement like that. After a while you
begin to believe that everything you do will be awful, so why even
bother trying?
It has been my experience that Python has discouraging forums with
someo
ZioMiP wrote:
> I know that WxPython work only under Windows
WxPython works everywhere for me. I have some screenshots from Windows
98 - Vista, Mac OSX, and Debian GNU/Linux... all running the exact same
Python & wxPython code:
http://filebox.vt.edu/users/rtilley/public/find_ssns/index.html
walterbyrd wrote:
> I mean other than sysadmins, programmers, and web-site developers?
> Anything else? Finance? Web-analytics? SEO? Digital art?
IT Security Analysts use it... see code and screenshots... these are not
professional programmers:
http://filebox.vt.edu/users/rtilley/public/find_ss
So I've been studying python for a few months (it is my first foray
into computer programming) and decided to write my own little simple
journaling program. It's all pretty basic stuff but I decided that I'd
learn more from it if more experienced programmers could offer some
thoughts on how I could
ith noting in between)
I thought I could do something like this:
if user_file == None:
pass
Or this:
if user_file == '':
pass
But, these don't work, the '' is still there. Any suggestions are
appreciated!
Brad
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Diez B. Roggisch wrote:
> They are still there because you perform the stripping and lowercasing in
> the append-call. Not beforehand.
Thank you. I made the changes. It works.
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sktop.
Is there a way to force py scripts to always run within the directory
that they reside in?
Thanks
Brad
/home/brad/Desktop/output - python from shell
/home/brad/Desktop/output - python from idle
/home/brad/output - python from Gnome 'right click' open with menu
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gravey wrote:
> Hello.
>
> Apologies if this is a basic question, but I want to open a HTML
> file from my local drive (is generated by another Python script)
> in Internet Explorer. I've had a look at the webbrowser module and
> this doesn't seem to be what I need. Any help much appreciated.
You
[EMAIL PROTECTED] wrote:
> Hi,
>
> I have been looking into making my file cleaning script more
> intelligent. The goal of the script is to delete everything on a
> drive except for a couple of folders which are skipped by the script.
> Recently, I noticed that some files where not being deleted
pproach this problem? Any ideas for improvement are welcome!
I can provide more info off-list for those who would like.
Thank you for your time,
Brad
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en a problem needs an accurate yet broad solution. Too
broad and the results are irrelevant as they'll include so many false
positives, too accurate and the results will be missing a few names.
It's a no-win :(
Thanks for the advice.
Brad
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Alex Martelli wrote:
> Most popular, however, is no doubt wxWindows --
> mostly because you can freely use it to develop SW which you plan to
> distribute under closed-source licenses, while Qt &c force you to choose
> -- either pay, or, if you even distribute your code, it will have to be
> under
est of luck,
Brad
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eed to
bundle the wx stuff. I develop on Linux, build on Windows (with
PyInstaller) and it works great. The source runs on any platform, the
Windows binaries is neat for the point and click users.
Brad
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Does Python have an equivalent to C's inet_addr()?
Thanks,
Brad
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Steve Holden wrote:
> brad wrote:
>> Does Python have an equivalent to C's inet_addr()?
>>
> socket.inet_aton() produces a four-byte string you can pass as a struct
> in_addr, if that's what you are looking for. If you want a number then
> use the stru
Stargaming wrote:
> Explicitly converting it to `int` works for me. (Without the 3-digit-
> block notation, of course.)
Thank you!
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How does one make the math module spit out actual values without using
engineer or scientific notation?
I get this from print math.pow(2,64):
1.84467440737e+19
I want this:
18,446,744,073,709,551,616
I'm lazy... I don't want to convert it manually :)
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James Stroud wrote:
> Midway through a semester in college, after a few days (or was it a few
> weeks?) of...well...lets just say I was studying real hard...I got lost
> on my way to o-chem and wandered into the interior design department by
> accident and found what I like to call "the motherlo
[EMAIL PROTECTED] wrote:
> Python is a better language, with php support, anyway, but I am fed up
> with attitudes of comp.lang.perl.misc. Assholes in this newsgroup ruin
> Perl experience for everyone. Instead of being helpful, snide remarks,
> back-biting, scare tactings, and so on proliferate an
Paul Rubin wrote:
> print 2**64
Ah yes, that works too... thanks. I've settled on doing it this way:
print int(math.pow(2,64))
I like the added parenthesis :)
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Rohan wrote:
> I would like to get a list of sub directories in a directory.
> If I use os.listdir i get a list of directories and files in that .
> i only want the list of directories in a directory and not the files
> in it.
> anyone has an idea regarding this.
How far down do you want to go?
A
Alchemist wrote:
> I am working with Python 2.5 on Windows XP (SP2).
>
> How can I traverse a folder, loop through a list of files and get
> their file name and extension in an elegant, pythonic way?
>
> Thank you.
>
try this:
for root, dirs, files in os.walk('.'):
for f in files:
print
André wrote:
> I should have added: I'm interesting in validating the file *content*
> - not the filename :-)
Some formats have identifying headers... I think jpeg is an example of
this. Open it with a hex editor or just read the first few bytes and see
for yourself.
Br
c2.d2(v,v,v)
class c1:
# User defined vars
def d1(var1, var2, var3):
pass
class c2:
# User defined vars
def d2(var1, var2, var3):
pass
Thanks,
Brad
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url_queue = Queue.Queue(256)
for subnet in subnets:
url_queue.put(subnet)
The problem is that I have 512 things to add to the queue, but my limit
is half that... whoops. Shouldn't the interpreter tell me that I'm an
idiot for trying to do this instead of just hanging? A message such as
thi
Chris Mellon wrote:
> ... the producer is designed to block if
> the queue is full. You can use the put_nowait method to have it raise
> an exception instead of blocking.
I assumed that the behavior would have been the other way around. I
should not have made that assumption.
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Marc 'BlackJack' Rintsch wrote:
> Why did you put an upper bound to the queue?
For clarity. Explicit is better than implicit, right? In our design, the
queue should only have x number of things, so why not show that? Other
than that, the limit is arbitrary and is not needed.
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[EMAIL PROTECTED] wrote:
> You should be able to read chunks of each file in binary mode and do a
> compare to check for equality. Some kind of loop should do the trick.
Why not a simple md5 or sha with the hash library?
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;s all I've ever really used threads for, so I'm
probably less of an expert than you are :) I guess it comes down to what
you're doing with them.
Brad
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brad wrote:
> This is all anecdotal... threads in Python work great for me. I like
> Ruby's green threads too,
I forgot to mention that Ruby is moving to a GIL over green threads in v2.0
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I'd like to do something like this:
var = '123'
%s = [], %var
So that, in the end, var is '123' and an empty list is named '123' as
well. The list assignments are created during a loop.
Thanks,
Brad
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Steve Holden wrote:
> Evan Klitzke wrote:
>> On 8/13/07, brad <[EMAIL PROTECTED]> wrote:
>>> I'd like to do something like this:
>>>
>>> var = '123'
>>> %s = [], %var
>>>
>>> So that, in the end, var is '123
Laurent Pointal wrote:
> As you wrote about c: and f:, I imagine you are working under Windows.
> IMHO you dont need Python for that.
Unless you need error handling, reporting, etc.
Bat scripts only go so far.
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Has anyone sent an xml payload via post using urllib? I'd like to do
something like this:
logon_request = """
"the_password"
"the_user"
"""
logon = urllib.urlopen("https://127.0.0.1/api/version/xml";, logon_request)
print logon.read()
logon.close()
127.0.0.1 expects xml via a https connec
franko353 wrote:
> I have wxPython programs that work fine in Win2000/XP using os.exec().
>
> They do not work in MS Vista. Has anyone else had any luck with
> exec()?
>
> I keep getting an 'invalid option' error.
>
> It turn out it was really a security issue and I had to move to a
> "win32proc
Nick Maclaren wrote:
> For reasons that I won't explain, as they are too complicated
> and not terribly relevant, I am interested in discovering what
> people actually use regular expressions for.
Finding credit card numbers in files...among other things:
http://filebox.vt.edu/users/rtilley/publi
this now,
let me know and I'll use that instead!
So, if other more experienced programmer are interested in helping make
the script better, please let me know. I can host a website and the
latest revision and do all of the grunt work.
Thanks,
Brad
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em on this? There are at least four PDF parsers
> written in Python out there.
I appreciate that suggestion, but again, none of the current solutions
I've seen and tried, extract text from pdf documents. I'd love to be
proven wrong on this point. So if one of those four cur
Is this the correct way to slice the last 4 items from a list?
x = [1,2,3,4,5,6,7,8,9]
print x[-4:]
It works, but is it Pythonic?
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This works:
>>> area_group = {001:06, 002:04, 003:04, 006:9}
This does not (one the end, 09 is used instead of 9)
>>> area_group = {001:06, 002:04, 003:04, 006:09}
File "", line 1
area_group = {001:06, 002:04, 003:04, 006:09}
SyntaxError: invalid token
Why does 09 cause an invalid tok
Tim Chase wrote:
> Numbers with leading zeros are parsed as octal. 8 and 9 are invalid
> digits in octal. Thus, it falls over. 00 through 07 will work fine,
> but 08 and 09 will go kaput.
>
> http://docs.python.org/ref/integers.html
>
> -tkc
Thanks... that makes sense. I'll store them as st
How is this expressed in Python?
If x is in y more than three times:
print x
y is a Python list.
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(the official unittest that is)... especially when there's a
lot of source code. But this...
if len(x) != y:
sys.exit('...')
is a hell of a lot easier and quicker that subclassing unittest.TestCase
on small projects :)
Do others do their own "informal" unit test
). I write/test
> on Linux, and the programs pretty much "just work" on Windows.
That sums up my experience with wxPython as well. I've never had any
problems. I develop on Linux and run on Linux, Mac and Windows.
Brad
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I was looking at a way to implement Ruby's upto method in python. I came
up with the code below... three years ago, I would never have thought of
list comprehension, today it seems second nature. This may be totally
un-Pythonic, but I thought it was kind of clever. Man, for some reason,
I feel
Bjoern Schliessmann wrote:
> brad wrote:
>> low_odds = [1,3,5,7,9]
>> # make a list containing 10 - 98 evens only
>> big_evens = big_evens = [x for x in list(xrange(99)) if x % 2 ==
>> 0 and x >8]
>
> Why use xrange if you convert it to a full list in place
Erik Jones wrote:
> big_evens = range(10, 100, 2)
> big_odds = range(11, 100, 2)
Neat, but not as clever or as hard to read as mine... I'll bet it faster
though... maybe not.
The upto part is here:
ok_numbers = low_odds + big_evens + [x for x in low_evens if x <= y]
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Shawn Minisall wrote:
> I just learned about if, then elif statements and wrote this program.
> The problem is, it's displaying all of the possibilities even after you
> enter a 0, or if the fat grams are more then the total number of
> calories , that is supposed to stop the program instead of
Crazy question, but has anyone attempted this or seen Python code that
does? For example, if a text file contained 'Guido' and or 'Robert' and
or 'Susan', then we should return True, otherwise return False.
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[EMAIL PROTECTED] wrote:
> On Oct 11, 5:22 pm, brad <[EMAIL PROTECTED]> wrote:
>> Crazy question, but has anyone attempted this or seen Python code that
>> does? For example, if a text file contained 'Guido' and or 'Robert' and
>> or 'Susan&
mes in it as well." Now then, I'd have
less to review or perhaps as much as I have now, but I could push the
files with numbers and names to the top of the list so that they would
be reviewed first.
Brad
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rtunately, there is no luhn check for SSNs. We
follow the Social Security Administration verification guideline
religiously... here's an web front-end to my logic:
http://black.cirt.vt.edu/public/valid_ssn/index.html
but still have many false positives on SSNs, so being able to id *names
and
lot of memory. So, just because you have 2GB, that does not mean you can
access all of that at once. I would guess that 25% of memory is in
constant use by the OS. So, do your IO/reads in smaller chunks similar
to the example I gave earlier.
Brad
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amdescombes wrote:
> Hi,
>
> I am using Python 2.5.1
> I have an application that reads a file and generates a key in a
> dictionary for each line it reads. I have managed to read a 1GB file and
> generate more than 8 million keys on an Windows XP machine with only 1GB
> of memory and all works
Florian Lindner wrote:
> Hello,
> is there a function in the Python stdlib to test if a string is a valid
> email address?
Nope, most any string with an @ in it could be a valid email addy. Send
a message to the addy, if it doesn't bounce, then it's valid.
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[EMAIL PROTECTED] wrote:
> On Oct 12, 2:55 pm, Florian Lindner <[EMAIL PROTECTED]> wrote:
>> Hello,
>> is there a function in the Python stdlib to test if a string is a valid
>> email address?
here's a Perl re example... I don't know whether to laugh or cry...
don't try to replicate this in Pytho
Grant Edwards wrote:
> If you send an e-mail to an address and you get a response,
> then it's valid.
No response could be valid too. The user may not respond. For automated
tasks, I go with the no bounce method. When things start bouncing, do
domething, but so long as they don't bounce do some
sily allows for this sort of thing (like Debian)
Brad
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Rob Wolfe wrote:
> I wonder why people always complain about `len` function but never
> about `iter` or `pprint.pprint`? :)
Not complaining. len is simple and understandable and IMO fits nicely
with split(), strip(), etc... that's why I used it as an example, but
list(), etc. could be used as e
Will len(a_string) become a_string.len()? I was just reading
http://docs.python.org/dev/3.0/whatsnew/3.0.html
One of the criticisms of Python compared to other OO languages is that
it isn't OO enough or as OO as others or that it is inconsistent. And
little things such as this seem to support t
Tommy Nordgren wrote:
>> def outer(avar=False):
>> print avar
>> if avar == True:
>> return
>>
>> def inner(avar=True):
>> print avar
>> return avar
>>
>> outer(inner())
>>
>> outer()
> This is not a general solution to this problem.
Run my exam
Tommy Nordgren wrote:
> Given the following:
> def outer(arg)
> avar = ''
> def inner1(arg2)
> # How can I set 'avar' here ?
Try this... works for me... maybe not for you?
def outer(avar=False):
print avar
if avar == True:
return
def inner(avar=True):
Eduardo O. Padoan wrote:
> This is a FAQ:
> http://effbot.org/pyfaq/why-does-python-use-methods-for-some-functionality-e-g-list-index-but-functions-for-other-e-g-len-list.htm
Thanks to all for the feedback. I'm no language designer. I just see and
hear these criticisms and I wanted to think thro
Wondering if someone would help me to better understand tempfile. I
attempt to create a tempfile, write to it, read it, but it is not
behaving as I expect. Any tips?
>>> x = tempfile.TemporaryFile()
>>> print x
', mode 'w+b' at 0xab364968>
>>> print x.read()
>>> print len(x.read())
0
>>> x
I was just looking through the 2.5.1 source code. I noticed a few
mis-spellings in the comments. No big deal really. Can patches be
submitted that correct the spelling errors or should they just be
pointed out to some mailing list?
Thanks,
Brad
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Just playing around with Python3000 a2 release on Windows XP 32-bit x86.
import __hello__
doesn't print 'hello world...' as it does on 2.5
The import doesn't fail or generate errors... just no output. Perhaps
this is by design?
Brad
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n the machine?
Thanks,
Brad
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Martin P. Hellwig wrote:
> The tricky part is how to resolve the mail server for a mail address.
> Usually you have to query the mx record of that domain. I solved that by
> looking if I can find the nslookup binary.
The from and to are static constants... they don't change. Mail just
seems s
Hi folks,
I'm still fairly new to programming in python and programming in
general. A friend of mine is in a CompSci 101 course and was working
on a slider game when he encountered a problem. We eventually figured
out what the problem was and built a test case to help solve it, but I
can't for the
utationally heavy info to c++ from
within Pyhton. os.system is not ideal. Just wondering how other folks do
this? I have source to some of the c++ code, but some of it is in binary
from only. It can take stdin or arguments.
Thanks for any tips,
Brad
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Vicent Giner wrote:
The usual answer is that development time is more important than running time.
This depends. Run time is not important until you are asked to scale to
millions or billions of users or computations or large data sets. I've
seen this first hand. Getting results back the sa
Frédéric Degraeve wrote:
Hello,
I tried this code with vs7-8 and boost1.34.1-1.35.0 and my python is a
2.4..
Try the boost users list:
To subscribe or unsubscribe via the World Wide Web, visit
http://lists.boost.org/mailman/listinfo.cgi/boost-users
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[EMAIL PROTECTED] wrote:
Hi,
Is it worthwhile maintaining a production application setup script in
Python as opposed to shell-script?
I do not think so. Perhaps 'in conjunction with', but not 'opposed
to'... sh is the lowest common denominator of shells. Script for sh and
your script will r
cm_gui wrote:
Python is slow.
It ain't C++, but it ain't a punch card either... somewhere in between.
I find it suitable for lots of stuff. I use C++ when performance really
matters tho... right tool for the job. Learn a good interpreted language
(Pyhton) and a good compiled language (C or C
ts the use of design
patter. So, here goes my question. Is that OK if I follow this? ...
Yes. Python does not impose design patterens onto developers. Pick your
poison. It is somewhat OOP, but allows for other development paradigms
as well... rather like C++ IMO although a bit more OOP focused.
Just wondering if anyone has ever solved this efficiently... not looking
for specific solutions tho... just ideas.
I have one thousand words and one thousand files. I need to read the
files to see if some of the words are in the files. I can stop reading a
file once I find 10 of the words in i
[EMAIL PROTECTED] wrote:
Hello,
I am new to Python, with a background in scientific computing. I'm
trying to write a script that will take a file with lines like
c afrac=.7 mmom=0 sev=-9.56646 erep=0 etot=-11.020107 emad=-3.597647
3pv=0
extract the values of afrac and etot...
Why not just sp
RPM1 wrote:
...
Basically you just compile your C code as a regular C code dll. ctypes
then allows you to access the functions in the dll very easily.
Does that work with C++ code too or just C?
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Gary Herron wrote:
My impression was (and still is):
A page of Python code looks *clean*, with not a lot of
punctuation/special symbols and (in particular) no useless lines
containing {/} or begin/end or do/done (or whatever).
what about all those 'self' thingys? :)
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Hi guys... I'm trying to make my Python regex code behave like my C++
regex code. In order to search large strings for *all* occurrences of
the thing I'm searching for, I loop like this in C++:
void number_search(const std::string& portion, const boost::regex& Numbers)
{
boost::smatch m
srinivasan srinivas wrote:
Could someone suggest me ways to convert PDF files to HTML files??
Does Python have any modules to do that job??
Thanks,
Srini
Unless there is some recent development, the answer is no, it's not
possible. Getting text out of PDF is difficult (to say the least) and a
Kevin Walzer wrote:
>>> import os
>>> foo = os.system('whoami')
kevin
>>> print foo
0
>>>
The standard output of the system command 'whoami' is my login name. Yet
the value of the 'foo' object is '0,' not 'kevin.' How can I get the
value of 'kevin' associated with foo?
Hi Kevin, check
Hi, what I'd like to do is edit an input file for a calculation with
Python. Let's say that I have an input file like the following
-->>
BLAH BLAH BLAH
Other inputs, Volume 940 m^3, maybe some more stuff
STUFF STUFF
-->>
So let's say I
alex23 wrote:
On Aug 12, 12:03 pm, Brad <[EMAIL PROTECTED]> wrote:
So let's say I want to edit this file and change Volume from 940 to 950.
Personally, I'd recommend avoiding re and sticking with the standard
string functions.
Something like this should be pretty effective:
alex23 wrote:
PDFMiner is a set of CLI tools written in Python, one of which
converts PDF to text, HTML and more:
http://www.unixuser.org/~euske/python/pdfminer/index.html
Very neat program. Would be cool if it could easily integrate into other
py apps instead of being a standalone CLI tool.
alex23 wrote:
On Aug 12, 11:13 pm, brad <[EMAIL PROTECTED]> wrote:
Very neat program. Would be cool if it could easily integrate into other
py apps instead of being a standalone CLI tool.
Perhaps, but I think you could get a long way using os.system().
Yes, that is possible, but the
[EMAIL PROTECTED] wrote:
Hi,
it's me again with tons of questions. I hava an input file structured
like this:
X XYData-1
1. 3.08333
>
number1 number2 number3
number4 number5 number6
split is your friend.
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When reading a file into a list that contains windows file paths like this:
c:\documents and settings\brad\desktop\added_software\asus\a.txt
I get a list that contains paths that look like this:
c:\\documents and settings\\brad\\desktop\\added_software\\asus\\a.txt
So, my list contains those
Steven D'Aprano wrote:
> On Fri, 28 Mar 2008 22:31:07 -0400, Brad wrote:
>
>> When reading a file into a list that contains windows file paths like
>> this:
>>
>> c:\documents and settings\brad\desktop\added_software\asus\a.txt
>>
>> I get a list t
I want to compare two dicts that should have identical info just in a
different data structure. The first dict's contents look like this. It
is authoritative... I know for sure it has the correct key value pairs:
{'001' : '01'}
The second dict's contents are like this with a tuple instead of a
Recently had a need to us a multimap container in C++. I now need to
write equivalent Python code. How does Python handle this?
k['1'] = 'Tom'
k['1'] = 'Bob'
k['1'] = 'Joe'
...
Same key, but different values. No overwrites either....
Mike Kent wrote:
Python 2.5.2 (r252:60911, Jul 31 2008, 17:28:52)
[GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu7)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
k = {}
k['1'] = []
k['1'].append('Tom')
k['1'].append('Bob')
k['1'].append('Joe')
k['1']
['Tom', 'Bob', 'Joe']
castironpi wrote:
I don't understand what a multimap does that a map of lists doesn't do.
It counts both keys individually as separate keys. The Python workaround
does not... see examples... notice the key(s) that are '4'
Python output (using the k = [] idea):
Key: 4 Value: [[13, 'Visa'],
Carl Banks wrote:
Out of curiosity, what does a true multimap solve that a dictionary of
lists not solve?
Nothing really. I went with a variation of the suggested work around...
it's just that with Python I don't normally have to use work arounds and
normally one obvious approach is correct:
On Nov 25, 10:49 pm, Chris Rebert wrote:
> On Wed, Nov 25, 2009 at 6:35 PM, The Music Guy
>
> wrote:
> > Hello all,
>
> > I just posted to my blog about a feature that I'd like to see added to
> > Python. Before I go through the trouble of learning how to write a PEP or
> > how to extend the Pyth
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