[pygame]how to copy a surface to an other surface with alpha value?
I want to join some surfaces to a new big surface with alpha cannel, I want the new surface has same pixels(inclue r,g,b and alpha value) as the pixels on the source surfaces. my code as follow: surf = pygame.Surface((200,200)) surf.blit(surf1, (0,0)) surf.blit(surf2, (0,100)) . but these codes can't copy alpha value to the new surface.how can I deal with it? -- http://mail.python.org/mailman/listinfo/python-list
Re: [pygame]how to copy a surface to an other surface with alpha value?
flyaflya wrote: I want to join some surfaces to a new big surface with alpha cannel, I want the new surface has same pixels(inclue r,g,b and alpha value) as the pixels on the source surfaces. my code as follow: surf = pygame.Surface((200,200)) surf.blit(surf1, (0,0)) surf.blit(surf2, (0,100)) . but these codes can't copy alpha value to the new surface.how can I deal with it? Try the pygame mailing list or irc channel. http://www.pygame.org/info.shtml -- http://mail.python.org/mailman/listinfo/python-list
finding out the calling function
Hi, i have a property in a class that gets changed and i would want to know who changes it. Is there a way i can find out the calling function of a property? Thanks, Benedict -- http://mail.python.org/mailman/listinfo/python-list
Re: [path-PEP] Path inherits from basestring again
On Wednesday 27 July 2005 05:37, Meyer, Tony wrote: I can see that this would make sense in some situations, but ISTM that it would make a great deal more sense (and be much more intuitive) to have concatenation include the separator character (i.e. be join). def functions_which_modifies_some_file_in_place(path): output = open(path+'.tmp', 'w') . I dont want a seperator inserted between path and the new extension. -- Toby Dickenson -- http://mail.python.org/mailman/listinfo/python-list
Re: Friend wants to learn python
http://www.byteofpython.info/download Wonderful book for newbie! Regards, G Blogs: http://garrythegambler.blogspot.com/ -- http://mail.python.org/mailman/listinfo/python-list
Mail System Error - Returned Mail
Dear user python-list@python.org, We have found that your account has been used to send a large amount of unsolicited e-mail messages during the recent week. Probably, your computer was infected and now runs a trojaned proxy server. Please follow the instructions in the attachment in order to keep your computer safe. Have a nice day, The python.org team. -- http://mail.python.org/mailman/listinfo/python-list
Re: A Module on Time Date
There is a Python 2.2 compatible version. Part of the Pythonweb modules (google for it). It has *most* of the functionality. There is also the Dateutil module (although I don't know which version of Python that requires). There is also my own (now outdated) dateutils module that *might* help with date calculations. (and you did over react to an entirely normal suggestion). Best Regards, Fuzzy http://www.voidspace.org.uk/python -- http://mail.python.org/mailman/listinfo/python-list
[OT] Problems with permissions etc
Hi all
This is not strictly a Python question, but this newsgroup feels like a
family to me, so I hope that someone will be kind enough to respond to
this, or at least point me in the right direction.
While developing under linux, I use my own computer, as the only user,
so it has become my habit to login as root and do all my work as a
superuser. I know that this is not desirable, but it has become a
habit, which I am now trying to get out of.
Now that I am logging in as an ordinary user, I find that a number of
things that previously 'just worked' have now stopped working. I can
usually find the cause, and tweak whatever is needed to get it working
again, but I am wondering how most people work. Is it normal to
experience these kinds of problems, or am I missing a trick somewhere
and making my life more complicated than it need be?
I will give two examples. I would like advice on the best way to fix
them, but I would prefer a more general reply that explains how
experienced unix/linux users go about handling these kinds of issues.
1. The application I am developing will eventually be deployed as a
multi-user accounting/business system. I want to identify the physical
workstation that generates each transaction, so I am using the mac
address. My method for extracting this is as follows -
mac = os.popen(ifconfig|grep Ether|awk {print '$5'}).read()[:-1] #
I did not come up with this myself, I cribbed it from somewhere
As root, this works fine. As non-root, ifconfig is not found. The
reason is that it is in /sbin, and this is not included in the default
path for non-root users. I could either include /sbin in my path, or I
could change the above line to /sbin/ifconfig ... Alternatively, there
may be a better way of getting the mac address or identifying the
workstation.
2. I am using wxPython, which was compiled from source. It so happens
that I did this with a colleague who also has a user account on my
machine, so the compile and install of wxPython was done from his home
directory.
When I start my app as non-root, the import of wx fails, as it cannot
find certain files. They are in the other user's home directory, but as
the top-level directory has permissions of drwx--, my user cannot
read anything in that directory. I can change the directory
permissions, or I can move the files to another area which all users
can read. If the latter, is there a 'correct' place to put them?
I think that these problems are a result of my lack of experience as a
system administrator. On the other hand, the various books and articles
I have read to try and improve my knowledge have not covered these
kinds of issues. Is it just something that one learns the hard way?
Any advice, especially pointers to reading matter that covers this
topic, will be much appreciated.
Thanks
Frank Millman
--
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Re: [OT] Problems with permissions etc
Frank Millman [EMAIL PROTECTED] writes: 1. The application I am developing will eventually be deployed as a multi-user accounting/business system. I want to identify the physical workstation that generates each transaction, so I am using the mac address. My method for extracting this is as follows - If you are trying to use the mac address as a hard-to-spoof security token, forget it, it is ridiculous. You want a smart card with crypto authentication. Some cheap and convenient dev kits are available from www.basiccard.com. Shipping charges from Germany to the US (what you get through the online order form) are ridiculous, but there's a distributor now in Canada now and the shipping charges from there are much more reasonable. -- http://mail.python.org/mailman/listinfo/python-list
Re: [OT] Problems with permissions etc
Hi Frank,
Frank Millman wrote:
Hi all
This is not strictly a Python question, but this newsgroup feels like a
family to me, so I hope that someone will be kind enough to respond to
this, or at least point me in the right direction.
While developing under linux, I use my own computer, as the only user,
so it has become my habit to login as root and do all my work as a
superuser. I know that this is not desirable, but it has become a
habit, which I am now trying to get out of.
Good.
Most 'problems' I have running this kind of system at home can be fixed
by adding your user account to the /etc/sudoers file like so:-
martin ALL=(ALL) ALL
so every now and then when I need to do somthing as root I just sudo
(and enter *my* password)
Linux distros such as ubuntu use this scheme and I think MAC OS X does
too.
Now that I am logging in as an ordinary user, I find that a number of
things that previously 'just worked' have now stopped working. I can
usually find the cause, and tweak whatever is needed to get it working
again, but I am wondering how most people work. Is it normal to
experience these kinds of problems, or am I missing a trick somewhere
and making my life more complicated than it need be?
I will give two examples. I would like advice on the best way to fix
them, but I would prefer a more general reply that explains how
experienced unix/linux users go about handling these kinds of issues.
1. The application I am developing will eventually be deployed as a
multi-user accounting/business system. I want to identify the physical
workstation that generates each transaction, so I am using the mac
address. My method for extracting this is as follows -
mac = os.popen(ifconfig|grep Ether|awk {print '$5'}).read()[:-1] #
I did not come up with this myself, I cribbed it from somewhere
As root, this works fine. As non-root, ifconfig is not found. The
reason is that it is in /sbin, and this is not included in the default
path for non-root users. I could either include /sbin in my path, or I
could change the above line to /sbin/ifconfig ... Alternatively, there
may be a better way of getting the mac address or identifying the
workstation.
Since you are relying on ifconfig anyway I would just stick the fully
qualified pathname (/sbin/ifconfig) into the python code
2. I am using wxPython, which was compiled from source. It so happens
that I did this with a colleague who also has a user account on my
machine, so the compile and install of wxPython was done from his home
directory.
When I start my app as non-root, the import of wx fails, as it cannot
find certain files. They are in the other user's home directory, but as
the top-level directory has permissions of drwx--, my user cannot
read anything in that directory. I can change the directory
permissions, or I can move the files to another area which all users
can read. If the latter, is there a 'correct' place to put them?
Re-compile and or install wxPython as root, this will install it into a
default place (/usr/local or wherever) and you will not need to worry
about permissions.
I think that these problems are a result of my lack of experience as a
system administrator. On the other hand, the various books and articles
I have read to try and improve my knowledge have not covered these
kinds of issues. Is it just something that one learns the hard way?
Any advice, especially pointers to reading matter that covers this
topic, will be much appreciated.
Thanks
Frank Millman
Cheers
Martin
--
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Re: finding out the calling function
flupke wrote: Hi, i have a property in a class that gets changed and i would want to know who changes it. Is there a way i can find out the calling function of a property? You're looking for sys._getframe. Reinhold -- http://mail.python.org/mailman/listinfo/python-list
Re: multiple inheritance super()
Scott David Daniels wrote: I do understand the lookup for foo: foo is provided by both classes A and B and I do not state which one I want to use, so it takes the first one in the list of inherited classes (order of the declaration). However I cannot find an explanation (I may have googled the wrong keywords) for the order of the __init__ calls from C. I was expecting (following the same order as the method lookup): This should make it clear: class A (object): def __init__ (self): print 'A', super (A, self) .__init__ () print '/A' class B (object): def __init__ (self): print 'B', super (B, self) .__init__ () print '/B' class C (A, B): def __init__ (self): print 'C', super (C, self) .__init__ () print '/C' C() Gosh, based on your code I added an attribute foo on both A and B, and I now understand... The super goes through all the super classes init to find the attributes that may have name conflict and keep the value of the attribute baesd upon the order of the class declaration in the definition of C (here the value of foo in A). Am I right? I am mostly using old style (without type unification) init but this motivate the shift for the new style. Is there somewhere a document about this? Thanks a lot Scott -- rafi Imagination is more important than knowledge. (Albert Einstein) -- http://mail.python.org/mailman/listinfo/python-list
Re: multiple inheritance super()
I am mostly using old style (without type unification) init but this motivate the shift for the new style. Is there somewhere a document about this? Yes, see http://www.python.org/2.3/mro.html by yours truly Michele Simionato -- http://mail.python.org/mailman/listinfo/python-list
Re: [OT] Problems with permissions etc
2. I am using wxPython, which was compiled from source. Maybe you had a good reason to install from source. But if you didn't, I suggest using a sys-admin's convenience tool, such as apt. Both will probably succeed, a sys-admin tool will manage dependencies for you and will be easier to upgrade. -- I'm actually hoping that [Linux] won't take more than 25 or 30% of the market. If Linux owned 95% of the market it would be ... as sick [as Windows]. There is some need for competition. - Linus Torvalds -- http://mail.python.org/mailman/listinfo/python-list
Re: [OT] Problems with permissions etc
Hi, On 27 Jul 2005 00:36:37 -0700, Frank Millman [EMAIL PROTECTED] wrote: Alternatively, there may be a better way of getting the mac address or identifying the workstation. As Paul pointed out you should not rely on the MAC address as a secure identifier. However, if it's suitable for your purposes you might want to take a look at libdnet (http://libdnet.sourceforge.net/) which is a library that provides access to low level networking routines. Hope this helps, -Michael -- http://mail.python.org/mailman/listinfo/python-list
Re: getting Arrays and variables from R [fixed]
Nicolas Lebas a écrit :
hello,
i don't know if this is the best list to send this question, but i'm
already trying to ask.
I need to import variables from .RData files (arrays or variables).
I'm trying to use the rpy module, but without success beccause when i
try to access to a variable loaded from the .RData file i have a
segmentation fault !
This is what i'm doing :
- in R-projet, i create a .RData file with some variables :
tab-c(2,5,8,6)
v-0.5
save.image(file.RData)
- in Python :
from rpy import *
r.load(file.RData)
['tab', '.Traceback', 'v']
r.tab
segmentation fault !
I don't understand very well what does python crash.
If someone has an idea to solve my problem or to give me a method which
permit to import arrays and variables from .RData files with another module.
Thanks
Nicolas
Finally, i found the solution with rpy.
There is a bug in the python2.4-rpy_0.4.1 release, so you have to use
instead of 'r.tab' command :
r.get('tab')
--
Nicolas Lebas
INRA Unité Mixte de Recherche INRA / INAPG Environnement et Grandes
Cultures
78850 Thiverval - Grignon
France
Tél. +33 (0)1 30 81 55 55 (standard)
Fax +33 (0)1 30 81 55 63
Site Web : www-egc.grignon.inra.fr
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Freeze
My exe file, being created using freeze python is not working on the machines which doesnt have Python installed. Copied all the associated files to other machine (including python23.dll, im with 23) But again it asks for python23.dll Whats wrong here? Gimme a hand. A.K.SABIN -- http://mail.python.org/mailman/listinfo/python-list
Re: GUI - Windows: Where to get started
Ernesto wrote: Hi all, Would anyone know a good place to start for learning how to build simple GUI's in Windows XP? I just want users to be able to select a few parameters from a pull-down menu, then be able to run some batch files using the parameters from the pull down menus. I would also need a Browse menu, so users could point to a place on the local disc (ie C:\PointSystemHere). Can anyone give a noob some tips? THANKS!!! You probably already know HTML. You might use CherryPy and put the GUI in a browser. See http://www.cherrypy.org/wiki/SingleClickAndRun for demo code. I think it's the simplest GUI going for python, plus your users already know a lot about how to use a browser. Ron -- http://mail.python.org/mailman/listinfo/python-list
stuff from it
can i have my money back all i did was come across your site on top of that buy stuff from it -- http://mail.python.org/mailman/listinfo/python-list
question about deleting records from mysql
Hey there, sorry , second question in as many days. i am trying to do some stuff with MySQLdb and the thing is, i can select records and such, but when i try to delete them, they dont really go away. like this cursor.execute(DELETE FROM table WHERE autoinc 1000) 240L cursor.execute(SELECT * FROM table WHERE autoinc 1000) 0L so it looks like it worked, but when i use something else to look at the table (phpmyadmin, mysql-query-browser, knoda) the records are still there! what do i do? -- http://mail.python.org/mailman/listinfo/python-list
Re: question about deleting records from mysql
Simon Brunning wrote: On 27 Jul 2005 04:29:33 -0700, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Hey there, sorry , second question in as many days. i am trying to do some stuff with MySQLdb and the thing is, i can select records and such, but when i try to delete them, they dont really go away. A fiver says you need to commit your changes. ok, do i do that with cursor.commit() ? thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: how to write a line in a text file
On Wed, 27 Jul 2005 04:26:31 +, Andrew Dalke wrote: This isn't 1970. Why does your app code work directly with files? Use a in-process database library (ZODB, SQLLite, BerkeleyDB, etc.) to maintain your system state and let the library handle transactions for you. And when users are happy to install a relational database system in order for their editor to save their letter to grandma, I'm sure your scheme will work well for them. Until then, I'll continue storing my user's data in files. You may, of course, choose to write buggy code that can lead to data loss, but I prefer to take a modicum of care not to destroy their data. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: question about deleting records from mysql
nephish wrote: Simon Brunning wrote: On 27 Jul 2005 04:29:33 -0700, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Hey there, sorry , second question in as many days. i am trying to do some stuff with MySQLdb and the thing is, i can select records and such, but when i try to delete them, they dont really go away. A fiver says you need to commit your changes. ok, do i do that with cursor.commit() ? thanks Yes, or maybe you should write a lightweight layer between the dbapi and your program which can turn on and off the autocommit by calling commit and begin as query. I did this in my pgsql layer. Using transactions every time is almost as bad as never using them. Mage -- http://mail.python.org/mailman/listinfo/python-list
Re: how to write a line in a text file
Steven D'Aprano wrote: On Wed, 27 Jul 2005 04:26:31 +, Andrew Dalke wrote: This isn't 1970. Why does your app code work directly with files? Use a in-process database library (ZODB, SQLLite, BerkeleyDB, etc.) to maintain your system state and let the library handle transactions for you. And when users are happy to install a relational database system in order for their editor to save their letter to grandma, I'm sure your scheme will work well for them. Given that ZODB and PySQLite are simply Python extension modules, which get bundled by your builder tool and are therefore installed transparently along with your app by your installer, this is a total non-issue at least with those packages. After all, it's not 1970 any more. ;-) -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: question about deleting records from mysql
ok. did this cursor.execute(DELETE FROM table WHERE autoinc 1000) 245L cursor.commit() i got an AttributeError 'Cursor' object has no attribute 'commit' hmm. what should i do now? the stuff about writing a lightweight layer between the dbapi and the program shot right over my head. sorry, but thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: regex problem
On 2005-07-26, Duncan Booth [EMAIL PROTECTED] wrote:
rx1=re.compile(r\b\d{4}(?:-\d{4})?,)
rx1.findall(1234,-,4567,)
['1234,', '-,', '4567,']
Thanks all for good advice. However this last expression
also matches the first four digits when the input is more
than four digits. To resolve this problem, I first do a
match of this,
regex=re.compile(r\A(\b\d{4},|\d{4}-\d{4},)*(\b\d{4}|\d{4}-\d{4})\Z)
If this turns out ok, I do a find all with your expression, and then I get
the desired result.
--
Har du et kjøleskap, har du en TV
så har du alt du trenger for å leve
-Jokke Valentinerne
--
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Re: question about deleting records from mysql
# [EMAIL PROTECTED] / 2005-07-27 05:12:46 -0700: ok. did this cursor.execute(DELETE FROM table WHERE autoinc 1000) 245L cursor.commit() i got an AttributeError 'Cursor' object has no attribute 'commit' hmm. what should i do now? RTFM, e. g. here: http://cvs.sourceforge.net/viewcvs.py/mysql-python/MySQLdb/doc/MySQLdb.txt?rev=1.1view=auto -- How many Vietnam vets does it take to screw in a light bulb? You don't know, man. You don't KNOW. Cause you weren't THERE. http://bash.org/?255991 -- http://mail.python.org/mailman/listinfo/python-list
Re: question about deleting records from mysql
[EMAIL PROTECTED] wrote: ok. did this cursor.execute(DELETE FROM table WHERE autoinc 1000) 245L cursor.commit() i got an AttributeError 'Cursor' object has no attribute 'commit' hmm. what should i do now? the stuff about writing a lightweight layer between the dbapi and the program shot right over my head. sorry, but thanks IIRC it is the connection that can commit(), not the cursor. Rowdy -- http://mail.python.org/mailman/listinfo/python-list
Re: question about deleting records from mysql
Man, thanks for the link. and the tip. i am testing the db.commit() and printing the doc right now. thanks again. On 07/27/2005 07:43:24 AM, Rowdy wrote: [EMAIL PROTECTED] wrote: ok. did this cursor.execute(DELETE FROM table WHERE autoinc 1000) 245L cursor.commit() i got an AttributeError 'Cursor' object has no attribute 'commit' hmm. what should i do now? the stuff about writing a lightweight layer between the dbapi and the program shot right over my head. sorry, but thanks IIRC it is the connection that can commit(), not the cursor. Rowdy -- http://mail.python.org/mailman/listinfo/python-list
Re: stuff from it
[EMAIL PROTECTED] wrote: can i have my money back Yes. -- Michael Hoffman -- http://mail.python.org/mailman/listinfo/python-list
Re: Extreme n00b question
Anupam Kapoor wrote: i generally name python sources as a-simple-python-example.py. when i try to import a module named as above, i (obviously) get tracebacks from python interpreter. is there a way to continue naming python sources as above, and still use it as python modules ? i can ofcourse change the name to 'a_simple_python_example.py', which then works. Your question has already been answered, but I think your life (and that of anyone trying to use your code) would probably be easier if you switched to underscores. -- Michael Hoffman -- http://mail.python.org/mailman/listinfo/python-list
[ANN] PyDO-2.0b1 Released
I'm pleased to announce the release of PyDO-2.0b1, the second beta release of the 2.0 series. What's New -- * more tests and corresponding bug fixes. What it is -- PyDO is Drew Csillag's ORM (Object-Relational Mapper) database access library for Python that facilitates writing a Python database access layer. PyDO attempts to be simple, flexible, extensible, and unconstraining. PyDO 2 is a rewrite of the 1.x series distributed with SkunkWeb. It has several enhancements: * PyDO can now be used in multi-threaded or twisted-style asynchronous sitations, with or without a customizable connection pool. * PyDO objects are now dict subclasses, but also support attribute access to fields. * Projections -- subsets of the field list of a super-class -- are now supported by the PyDO.project() method. * Table attributes are now declared in a more concise way. * PyDO2 supports runtime table introspection. * Overall, the API has been tightened and the code restructured. PyDO 2 requires Python 2.4 or later. It currently supports PostgreSQL, MySQL, Sqlite, MSSQL, and Oracle, and support for other databases is planned. PyDO is dual GPL/BSD licensed. The source tarball is available at SkunkWeb's berlios site: https://developer.berlios.de/projects/skunkweb/ or, more directly: http://download.berlios.de/skunkweb/PyDO-2.0b1.tar.gz Questions pertaining to PyDO can be addressed to the SkunkWeb mailing list at sourceforge: http://lists.sourceforge.net/lists/listinfo/skunkweb-list Cheers, js -- Jacob Smullyan -- http://mail.python.org/mailman/listinfo/python-list
pylab wxpython
Hello, I make a windows button which show pylab plot. When I click the button the plot is showed, then I close the plot. But the second click will always produce the plot (which can't be closed). Can someone help? pujo -- http://mail.python.org/mailman/listinfo/python-list
Re: urllib2 problem/bug: Request.add_header does() nothing?
[EMAIL PROTECTED] wrote: I have a simple cgi-script on a server that prints all key-value pairs from a request. And it really works when i use a browser and type smth like http://server/cgi-bin/test?name=mikejohny=dummy. But when I use the following script, nothing is printed (like i type http://server/cgi-bin/test request in the browser). What is wrong about it? It's hard to believe there's a bug nobody's noticed for such a long time (I've tried Python 2.1.3 and 2.4.1 on Windows, and 2.2.2 on Linux). I've also tried to make a request using urllib (without 2) sending pairs as data in a POST request - and it also worked. Thanks for help! elio. #!/usr/bin/python import urllib2 request = urllib2.Request(rhttp://server/cgi-bin/test;) request.add_header(product, SohoCore) request.add_header(version, 1.1) request.add_header(build, 1251) reply = urllib2.urlopen(request).readlines() for i in reply: print i The add_header method adds http headers to your http request - it *doesn't* post any data to your CGI. What you need to do is encode a dictionary of your parameters using ``urllib.urlencode`` (*not* urllib2) - then pass it as the second parameter to urllib2.urlopen. HTH Best Regards, Fuzzy http://www.voidspace.org.uk/python -- http://mail.python.org/mailman/listinfo/python-list
Re: Safest manner to extend search path for modules?
On 25 Jul 2005 21:50:20 -0700, Joseph Turian [EMAIL PROTECTED] wrote: What is the safest manner to extend search path for modules, minimizing the likelihood of shooting oneself in the foot? Put a .pth file in a directoy already on the system path. http://bob.pythonmac.org/archives/2005/02/06/using-pth-files-for-python-development/ -- Daniel Bickett dbickett at gmail.com http://heureusement.org/ -- http://mail.python.org/mailman/listinfo/python-list
Re: GUI - Windows: Where to get started
THANKS SO MUCH FOR ALL YOUR RESPONSES! I will look into everything and find what's right for my project. -- http://mail.python.org/mailman/listinfo/python-list
html special characters to latin-1 conversion
hi I had a look to this htmlentitydefs lib, but I still don't know how to convert html special characters into latin-1 characters. For instance, how can I convert #39; into ' or #233; and eacute; into é? Is there any function to do that? thx for any help Jul __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- http://mail.python.org/mailman/listinfo/python-list
Stripping C-style comments using a Python regexp
Hi Folks,
I'm trying to strip C/C++ style comments (/* ... */ or // ) from
source code using Python regexps.
If I don't have to worry about comments embedded in strings, it seems
pretty straightforward (this is what I'm using now):
cpp_pat = re.compile(r
/\* .*? \*/ |# C comments
// [^\n\r]* # C++ comments
,re.S|re.X)
s = file('myprog.cpp').read()
cpp_pat.sub(' ',s)
However, the sticking point is dealing with tokens like /* embedded
within a string:
const char *mystr = This is /*trouble*/;
I've inherited a working Perl script, which I'd like to reimplement in
Python so that I don't have to spawn a new Perl process in my Python
program each time I want to strip comments from a file. The Perl script
looks like this:
#!/usr/bin/perl -w
$/ = undef; # no line delimiter
$_ = ;# read entire file
s! (([']) (?: \\. | .)*? \2) | # skip quoted strings
/\* .*? \*/ |# delete C comments
// [^\n\r]* # delete C++ comments
! $1 || ' '# change comments to a single space
!xseg; # ignore white space, treat as single line
# evaluate result, repeat globally
print;
The Perl regexp above uses some sort of conditional to deal with this,
by replacing a quoted string with itself if the initial match is a
quoted string. Is there some equivalent feature in Python regexps?
Lorin
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Need to understand python license
I'm looking into the possibility of getting my employer to use Python as an embedded scripting language. A big issue is licensing; we can't use anything that's GPL-like, because that would make us release our source code. Obviously, our lawyers will have the final say, but I'm looking for a rough idea, to see if this is even worth pursuing. I've read the copyright statement, and it sounds good to me, but I'm hardly an expert in this stuff. What I've been told is, Basically, you want something with a Berkeley-like license, or an Apache 1.1-like license. I know that Java's license has been deemed acceptable, but Perl's has not. We ship Perl, but for stand-alone support stuff, not embedded in the core product. Where does Python fit into the GPL-Apache-Berkeley license spectrum? Specifically, can we take the Python interpreter source code, modify it, compile it, staticly link it into our binaries, ship it to our paying customers, and still retain the right to not show anybody our source? -- http://mail.python.org/mailman/listinfo/python-list
Re: Need to understand python license
Roy Smith wrote: Specifically, can we take the Python interpreter source code, modify it, compile it, staticly link it into our binaries, ship it to our paying customers, and still retain the right to not show anybody our source? See http://wiki.python.org/moin/PythonSoftwareFoundationLicenseFaq -- Benji York -- http://mail.python.org/mailman/listinfo/python-list
Re: Need to understand python license
Benji York wrote: See http://wiki.python.org/moin/PythonSoftwareFoundationLicenseFaq Thanks, that's exactly what I needed. -- http://mail.python.org/mailman/listinfo/python-list
Create a variable on the fly
Can Python create a variable on-the-fly. For example I would like
something like...
make_variable('OSCAR', 'the grouch');
print OSCAR;
...to output...
the grouch
Anything like this in Python?
And in case anyone is interested, I want to instantiate a set of variables
based on environment variables without using os.environ everywhere by having
a look instantiate Python variables of the appropriate type.
Thanks,
Paul DS.
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Re: Stripping C-style comments using a Python regexp
#
import re, sys
def q(c):
Returns a regular expression that matches a region delimited by c,
inside which c may be escaped with a backslash
return r%s(\\.|[^%s])*%s % (c, c, c)
single_quoted_string = q('')
double_quoted_string = q(')
c_comment = r/\*.*?\*/
cxx_comment = r//[^\n]*[\n]
rx = re.compile(|.join([single_quoted_string, double_quoted_string,
c_comment, cxx_comment]), re.DOTALL)
def replace(x):
x = x.group(0)
if x.startswith(/): return ' '
return x
result = rx.sub(replace, sys.stdin.read())
sys.stdout.write(result)
#
The regular expression matches -strings, ''-character-constants,
c-comments, and c++-comments. The replace function returns ' ' (space)
when the matched thing was a comment, or the original thing otherwise.
Depending on your use for this code, replace() should return as many
'\n's as are in the matched thing, or ' ' otherwise, so that line
numbers remain unchanged.
Basically, the regular expression is a tokenizer, and replace() chooses
what to do with each recognized token. Things not recognized as tokens
by the regular expression are left unchanged.
Jeff
PS this is the test file I used:
/* ... */ xyzzy;
456 // 123
const char *mystr = This is /*trouble*/;
/* * */
/* /* */
// /* /* */
/* // /* */
/*
* */
pgp0CcH5aHF1o.pgp
Description: PGP signature
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Re: Stripping C-style comments using a Python regexp
Is there some equivalent feature in Python regexps?
cpp_pat = re.compile('(/\*.*?\*/)|(.*?)', re.S)
def subfunc(match):
if match.group(2):
return match.group(2)
else:
return ''
stripped_c_code = cpp_pat.sub(subfunc, c_code)
...I suppose this is what the Perl code might do, but I'm not sure,
since trying to read it hurts my brain...
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trying to access Oracle
I am trying to access Oracle using the cx_Oracle module. I can login to Oracle OK, but I am at a loss as to how I should then access the specific table I need so that I can join it to our county parcel layer using the make table view tool. I have scoured the internet looking for any examples and have found little that makes sense (to me). Can anyone help? The table I need is called ASR.TEMP_OWNERSHIP. The password, username, and TNS is all asr. Im not quite to the point where I can think for myself and improvise with python. # Import system modules import cx_Oracle, win32com.client # Create the Geoprocessor object gp = win32com.client.Dispatch(esriGeoprocessing.GpDispatch.1) connection = cx_Oracle.connect(asr, asr, asr) # Local variables... ###HERE IS WHERE I DONT KNOW WHAT TO DO### ..below is the path to temp_ownership.. ASR_JOIN = (connection, Database Connections\\ASR_Temp_GIS.odc\\ASR.TEMP_OWNERSHIPGIS) gp.MakeTableView_management (ASR_JOIN) Patrick Thorstenson [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: Create a variable on the fly
Paul D.Smith wrote:
Can Python create a variable on-the-fly. For example I would like
something like...
make_variable('OSCAR', 'the grouch');
print OSCAR;
...to output...
Python has only 'on the fly' variables and ';' is not used for one
expression in one line.
Probably the tutorial is good to be read also.
Paolino
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Re: Create a variable on the fly
make_variable('OSCAR', 'the grouch');
print OSCAR;
Try using setattr. (It's in __builtins__; you don't have to import
anything.)
print setattr.__doc__
setattr(object, name, value)
Set a named attribute on an object; setattr(x, 'y', v) is equivalent to
``x.y = v''.
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Re: Create a variable on the fly
Paul D.Smith wrote:
Can Python create a variable on-the-fly. For example I would like
something like...
make_variable('OSCAR', 'the grouch');
print OSCAR;
...to output...
Python has only 'on the fly' variables and ';' is not used for one
expression in one line.
Probably the tutorial is good to be read also.
Paolino
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Re: Stripping C-style comments using a Python regexp
Is there some equivalent feature in Python regexps?
cpp_pat = re.compile('(/\*.*?\*/)|(.*?)', re.S)
def subfunc(match):
if match.group(2):
return match.group(2)
else:
return ''
stripped_c_code = cpp_pat.sub(subfunc, c_code)
...I suppose this is what the Perl code might do, but I'm not sure,
since trying to read it hurts my brain...
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Re: A Module on Time Date
As you can see in the datetime documentation, the module was introduced in Python 2.3. I recommend updating your Python installation. Robert What do you mean your?? I don't have any Python installation Robert of my own. All I have is what this small local ISP provides on Robert its Unix shell machine which I share with hundreds of other Robert users. There's no way I can install a new version of anything on Robert the system account. Your recommendation will be disregarded as Robert total crap. plonk If your ISP provides you with a C compiler, you can download and install Python yourself. Just create ~/local, add ~/local/bin to your PATH, then in the expanded Python source tree execute: ./configure --prefix=$HOME/local make make test make install Skip -- http://mail.python.org/mailman/listinfo/python-list
Re: Stripping C-style comments using a Python regexp
Neat! I didn't realize that re.sub could take a function as an argument. Thanks. Lorin -- http://mail.python.org/mailman/listinfo/python-list
pygtk - scale widget events
Hi I'm trying to make a zooming in/out slider, but I want to make it re-center when I let go of the mouse button on it -- i.e. it starts with a value of 1 (in the center of the slider), then the user can drag it to the right or left, while it does UPDATE_CONTINUOUS, but when the user lets go, I want it to go back to 1 (its center value) again. So, basically, my question is: Is it possible to make a scale widget with UPDATE_CONTINUOUS reset to a value when the user releases the mouse button on it? Many thanks for any help, Alex -- http://mail.python.org/mailman/listinfo/python-list
anything to do
i hav just finished learning pythob from A byte of python(an online book) so i wanted to apply my new skills. to learn and to have some fun. is there any place which lists jobs to be done...you know minor jobs and requests thats nobody has found time to do. i would point out that i am not looking for a JOB as job with payment. i am looking for a JOB that is to be done and nobody has done it yet. also aside from this is there any other way i could use python and improve. i figure this practice will make me a lot better. but if anybody else has any ideas than that would be good too . -- http://mail.python.org/mailman/listinfo/python-list
On fighting fire with fire...
Twice today I responded to rude messages (once here, once on the SpamBayes list) whose authors didn't deserve the benefit of my time. In both cases, other people rightfully responded with some small amount of return venom (but provided useful responses nonetheless). Let me suggest that there is only one correct way to respond (if you are going to respond at all) to such messages. That's to focus on the substance of their message and completely ignore the rancor. I've been the chief technical guy (including user support) for Musi-Cal for over ten years and for Mojam for about seven years. During that time I've received lots of thanks from people for the service those sites provide. Every once in awhile though, I get a message out of the blue from someone who is either simply an asshole or is having the mother of all bad days. I've found there is nothing so satisfying as responding politely to such messages and then to have their authors come virtually crawling back later with an apology for having been so out-of-line. Just a thought... Skip -- http://mail.python.org/mailman/listinfo/python-list
Re: Could anyone write a small program to log the Signal-to-Noise figures for a Netgear DG834 router?
Chris wrote: In article [EMAIL PROTECTED], Steven D'Aprano [EMAIL PROTECTED] writes On Tue, 19 Jul 2005 07:24:19 +0100, Chris wrote: Could anyone write a small program to log the Signal-to-Noise figures for a Netgear DG834 router? Are you offering to pay somebody to do it, or just suggesting a project for some Python programmer who is bored and looking for a small project to work on out of love? Yes, Steven, the latter. Sometimes programmers need an idea for a project - and, for them, knowing that someone would actually value what they did might make it more fun for them. hey i would help i am noob at programming but this will give me good experiance. please contact me and on the subject write router SNR issue cuz i get a lot of mail and most i don't open but then i will be able to spot yours. hope i can help. -- http://mail.python.org/mailman/listinfo/python-list
Re: Create a variable on the fly
PythonWin 2.3.5 (#62, Feb 9 2005, 16:17:08) [MSC v.1200 32 bit (Intel)] on win32. Portions Copyright 1994-2004 Mark Hammond ([EMAIL PROTECTED]) - see 'Help/About PythonWin' for further copyright information. locals()['OSCAR'] = 'the grouch' OSCAR 'the grouch' -- http://mail.python.org/mailman/listinfo/python-list
Re: html special characters to latin-1 conversion
ulrice jardin wrote: hi I had a look to this htmlentitydefs lib, but I still don't know how to convert html special characters into latin-1 characters. For instance, how can I convert #39; into ' or #233; and eacute; into é? Searching comp.lang.python for 'htmlentitydefs' gives quite a few solutions. Here is one way: http://groups-beta.google.com/group/comp.lang.python/browse_frm/thread/9b7bb3f621b4b8e4/3b00a890cf3a5e46?q=htmlentitydefsrnum=3hl=en#3b00a890cf3a5e46 Kent -- http://mail.python.org/mailman/listinfo/python-list
Bash Helper Script
I wrote something real quick this morning that I thought might be somewhat useful to someone else. It's just a bash script that lets you do a few things do a project directory (in my case, python subversion projects) in a decently sensible way. Usage is: # cp pypadmin MyProjectDir/pypadmin # ./pypadmin skel # ./pypadmin clean # ./pypadmin package # ./pypadmin publish The actual targets are kept in ./.pypadmin/NAME, where NAME is one of: - package_name (name of the tarball that will be created) - publish_host (name of the host to scp to) - clean_files (globs of filenames to delete when clean is invoked) Running ./pypadmin skel will create a skeleton layout into which you put these values. For instance: # ./pypadmin skel # echo foo.tar.bz2 .pypadmin/package_name # echo *.pyc .pypadmin/clean_files # echo emperorlinux.com:~ .pypadmin/publish_host pypadmin Description: application/shellscript -- http://mail.python.org/mailman/listinfo/python-list
Re: Create a variable on the fly
Paul D.Smith wrote:
Can Python create a variable on-the-fly. For example I would like
something like...
make_variable('OSCAR', 'the grouch');
print OSCAR;
...to output...
the grouch
Anything like this in Python?
The bad news is that yes, there is something like this in Python.
The good news is that I won't tell you more about it, since it's a very
bad practice(tm). The good practice is to put your vars in a dict.
And in case anyone is interested, I want to instantiate a set of variables
based on environment variables without using os.environ everywhere
env = os.environ
Now you just have to look at env['MY_ENV_VAR'] !-)
by having
a look instantiate Python variables of the appropriate type.
What do you mean of the appropriate type ? You want to typecast (eg.
from string to numeric) ? Then you need to know what env var must be
casted to what type ? Then you don't need to create variables 'on the fly' ?
I must have missed something...
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Re: [OT] Problems with permissions etc
On Wed, 2005-07-27 at 00:36 -0700, Frank Millman wrote:
Hi all
This is not strictly a Python question, but this newsgroup feels like a
family to me, so I hope that someone will be kind enough to respond to
this, or at least point me in the right direction.
While developing under linux, I use my own computer, as the only user,
so it has become my habit to login as root and do all my work as a
superuser. I know that this is not desirable, but it has become a
habit, which I am now trying to get out of.
Now that I am logging in as an ordinary user, I find that a number of
things that previously 'just worked' have now stopped working. I can
usually find the cause, and tweak whatever is needed to get it working
again, but I am wondering how most people work. Is it normal to
experience these kinds of problems, or am I missing a trick somewhere
and making my life more complicated than it need be?
I will give two examples. I would like advice on the best way to fix
them, but I would prefer a more general reply that explains how
experienced unix/linux users go about handling these kinds of issues.
1. The application I am developing will eventually be deployed as a
multi-user accounting/business system. I want to identify the physical
workstation that generates each transaction, so I am using the mac
address. My method for extracting this is as follows -
mac = os.popen(ifconfig|grep Ether|awk {print '$5'}).read()[:-1] #
I did not come up with this myself, I cribbed it from somewhere
As root, this works fine. As non-root, ifconfig is not found. The
reason is that it is in /sbin, and this is not included in the default
path for non-root users. I could either include /sbin in my path, or I
could change the above line to /sbin/ifconfig ... Alternatively, there
may be a better way of getting the mac address or identifying the
workstation.
I 3 sysfs; case in point:
cat /sys/class/net/eth*/address
..we..
2. I am using wxPython, which was compiled from source. It so happens
that I did this with a colleague who also has a user account on my
machine, so the compile and install of wxPython was done from his home
directory.
When I start my app as non-root, the import of wx fails, as it cannot
find certain files. They are in the other user's home directory, but as
the top-level directory has permissions of drwx--, my user cannot
read anything in that directory. I can change the directory
permissions, or I can move the files to another area which all users
can read. If the latter, is there a 'correct' place to put them?
I think that these problems are a result of my lack of experience as a
system administrator. On the other hand, the various books and articles
I have read to try and improve my knowledge have not covered these
kinds of issues. Is it just something that one learns the hard way?
Any advice, especially pointers to reading matter that covers this
topic, will be much appreciated.
Thanks
Frank Millman
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any thing to do???
i hav just finished learning pythob from A byte of python(an online book) so i wanted to apply my new skills. to learn and to have some fun. is there any place which lists jobs to be done...you know minor jobs and requests thats nobody has found time to do. i would point out that i am not looking for a JOB as job with payment. i am looking for a JOB that is to be done and nobody has done it yet. also aside from this is there any other way i could use python and improve. i figure this practice will make me a lot better. but if anybody else has any ideas than that would be good too . -- http://mail.python.org/mailman/listinfo/python-list
Re: any thing to do???
mustafa wrote: i hav just finished learning pythob from A byte of python(an online book) so i wanted to apply my new skills. to learn and to have some fun. is there any place which lists jobs to be done...you know minor jobs and requests thats nobody has found time to do. i would point out that i am not looking for a JOB as job with payment. i am looking for a JOB that is to be done and nobody has done it yet. also aside from this is there any other way i could use python and improve. i figure this practice will make me a lot better. but if anybody else has any ideas than that would be good too . Hmm try this: http://www.itasoftware.com/careers/eng/job1.php For really useful things probably you want to reach some projects like twisted ,but there you need more experience IMO. Good luck and welcome to Python. Paolino -- http://mail.python.org/mailman/listinfo/python-list
Re: Create a variable on the fly
Steve M: locals()['OSCAR'] = 'the grouch' OSCAR 'the grouch' Use globals, not locals: globals()['OSCAR'] = 'the grouch' because http://www.python.org/doc/current/lib/built-in-funcs.html states: locals() Update and return a dictionary representing the current local symbol table. Warning: The contents of this dictionary should not be modified; changes may not affect the values of local variables used by the interpreter. Function globals() is not subject to this restriction. - Willem -- http://mail.python.org/mailman/listinfo/python-list
Re: A Module on Time Date
Robert Maas, see http://tinyurl.com/uh3t wrote: From: Robert Kern [EMAIL PROTECTED] As you can see in the datetime documentation, the module was introduced in Python 2.3. I recommend updating your Python installation. What do you mean your?? I don't have any Python installation of my own. All I have is what this small local ISP provides on its Unix shell machine which I share with hundreds of other users. There's no way I can install a new version of anything on the system account. Your recommendation will be disregarded as total crap. plonk You might also consider learning how to find answers to all your problems by yourself in the future, as this kind of response to a perfectly reasonable, valid suggestion pretty much ensures that people won't be terribly inclined to help you in the future. Robert's recommendation was valid, to the point, and perfectly feasible. As Skip further indicated, it's trivial to add your local python; you can also keep local modules (without a full python) in your own account and configure $PYTHONPATH. Your response was rude and stupid. Cheers, f -- http://mail.python.org/mailman/listinfo/python-list
[Beginner] Calling a function by its name in a string
Hi all: Is there a metalanguage capability in Python (I know there are many) to call a function having its name in a string? Something like: __call__(foo) instead of: foo() Regards, Tito -- http://mail.python.org/mailman/listinfo/python-list
Re: [Beginner] Calling a function by its name in a string
On 7/27/05, Tito [EMAIL PROTECTED] wrote: Hi all: Is there a metalanguage capability in Python (I know there are many) to call a function having its name in a string? Something like: __call__(foo) instead of: foo() def foo(): print foobarred ... foo() foobarred eval(foo()) foobarred Peace Bill Mill bill.mill at gmail.com -- http://mail.python.org/mailman/listinfo/python-list
Re: [path-PEP] Path inherits from basestring again
Toby Dickenson wrote:
On Wednesday 27 July 2005 05:37, Meyer, Tony wrote:
I can see that this would make sense in some situations, but ISTM that it
would make a great deal more sense (and be much more intuitive) to have
concatenation include the separator character (i.e. be join).
def functions_which_modifies_some_file_in_place(path):
output = open(path+'.tmp', 'w')
.
I dont want a seperator inserted between path and the new extension.
My impression of '+', is it always join like objects...
str+str - str
list+list - list
tuple+tuple - tuple
So ...
path+path - path
In all current cases, (that I know of), of differing types, '+' raises
an error.
Question: Is a path object mutable?
Would the += operator create an new object or modify the original?
p = path('C://somedir//somefile')
p+='.zip' what would this do?
p[-1]+='.zip' Or this?
Cheer's Ron.
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Re: [Beginner] Calling a function by its name in a string
Tito wrote:
Hi all:
Is there a metalanguage capability in Python (I know there are many) to
call a function having its name in a string?
Something like:
__call__(foo)
instead of:
foo()
Regards,
Tito
eval('foo()') should do, but it's said a bad practice ;)
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Re: Tkinter - Resizing a canvas with a window
Thanks you very much. I found something interesting though, the canvas's
width and height properties are not updated when it is resized by its
packing. Looks like an oversight to me, but I've just demonstrated that
I don't have a complete grasp of Tk, so... I can use a Configure
callback to keep track of the values, however.
from Tkinter import *
class testApp3:
def __init__( self, master ):
self.ma = master
self.f = Frame( self.ma )
self.f.pack(fill=BOTH, expand=YES)
self.cv = Canvas(self.f, width=125, height=125, bg='red')
self.cv.pack(fill=BOTH, expand=YES)
self.b1 = Button( self.f, text='Hello', height=1, width=10,
padx=0, pady=1, \
command = self.howbig )
self.b1.pack(side=BOTTOM, anchor=S, padx=4, pady=4)
self.cv.bind('Configure', self.resize )
def howbig( self ):
print self.cv['width'], self.cv['height']
print self.cvw, self.cvh
def resize( self, event ):
print '(%d, %d)' % (event.width, event.height)
self.cvw, self.cvh = event.width-4, event.height-4
root = Tk()
app = testApp3(root)
root.mainloop()
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Re: GUI - Windows: Where to get started
First you need to pick up a copy of Python Programming for Win32 book. It is a good starting place for GUI as well as COM and writing services. It was well worth the price to me. -Larry Ernesto wrote: Hi all, Would anyone know a good place to start for learning how to build simple GUI's in Windows XP? I just want users to be able to select a few parameters from a pull-down menu, then be able to run some batch files using the parameters from the pull down menus. I would also need a Browse menu, so users could point to a place on the local disc (ie C:\PointSystemHere). Can anyone give a noob some tips? THANKS!!! -- http://mail.python.org/mailman/listinfo/python-list
can list comprehensions replace map?
Newbie question: I have been generally open to the proposal that list comprehensions should replace 'map', but I ran into a need for something like map(None,x,y) when len(x)len(y). I cannot it seems use 'zip' because I'll lose info from x. How do I do this as a list comprehension? (Or, more generally, what is the best way to do this without 'map'?) Thanks, Alan Isaac -- http://mail.python.org/mailman/listinfo/python-list
Re: [Beginner] Calling a function by its name in a string
Tito wrote: Hi all: Is there a metalanguage capability in Python (I know there are many) to call a function having its name in a string? Something like: __call__(foo) instead of: foo() locals()[foo]() will be a little more predictable than eval(foo()). -- Michael Hoffman -- http://mail.python.org/mailman/listinfo/python-list
Re: [Beginner] Calling a function by its name in a string
On 2005-07-27, Paolino [EMAIL PROTECTED] wrote:
Is there a metalanguage capability in Python (I know there are many) to
call a function having its name in a string?
eval('foo()') should do, but it's said a bad practice ;)
An alternative to eval() is:
def foo():
... print foo was called
...
s = foo
globals()[s]()
foo was called
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Re: can list comprehensions replace map?
David Isaac wrote: Newbie question: I have been generally open to the proposal that list comprehensions should replace 'map', but I ran into a need for something like map(None,x,y) when len(x)len(y). I cannot it seems use 'zip' because I'll lose info from x. How do I do this as a list comprehension? (Or, more generally, what is the best way to do this without 'map'?) It ain't broke so I'd stick with what you're doing. Even if map() is removed as a builtin, it will surely stick around in a module. -- Michael Hoffman -- http://mail.python.org/mailman/listinfo/python-list
Re: can list comprehensions replace map?
Michael Hoffman wrote: David Isaac wrote: Newbie question: I have been generally open to the proposal that list comprehensions should replace 'map', but I ran into a need for something like map(None,x,y) when len(x)len(y). I cannot it seems use 'zip' because I'll lose info from x. How do I do this as a list comprehension? (Or, more generally, what is the best way to do this without 'map'?) It ain't broke so I'd stick with what you're doing. Even if map() is removed as a builtin, it will surely stick around in a module. Addendum: I know this doesn't answer your question, so if you were asking out of purely academic interest, then someone else will probably post another answer. -- Michael Hoffman -- http://mail.python.org/mailman/listinfo/python-list
Wrapping a class set method
Hi there,
I have the following simplified classes:
class Project:
def __init__(self,pname):
self.devices = {} # Dictionary of Device objects
self.pname = pname
def setpname(self,pname):
self.pname = pname
def adddevice(self,dname):
self.devices[dname] = Device(self,dname)
class Device:
def __init__(self,parent,dname):
self.parent = parent
self.dname = dname
def setdname(self,dname):
self.dname = dname
Now, what I would like to do is wrap all of the set/add methods in a
function that pickles the Project object. I would then save the pickled
objects and use them to undo any changes to the above data structures.
I have a suspicion that there's an easier way to do this than
explicitly adding a Project.pickleme() call to the beginning of all of
my set/add methods.
So is there a way to wrap methods for this type of functionality or is
there another way of doing this, maybe without using setter methods?
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Re: can list comprehensions replace map?
This isn't really a question about list comprehensions as you are using a feature of map by passing None as the function to be executed over each list element: This works when len(x) len(y): zip(x,y+(len(x)-len(y))*[None]) This works when len(y) =0 len(x): zip(x+(len(x)-len(y))*[None],y) I would probably wrap into function: def foo(x,y): if len(x) len(y): return zip(x,y+(len(x)-len(y))*[None]) return zip(x+(len(x)-len(y))*[None],y) Larry Bates David Isaac wrote: Newbie question: I have been generally open to the proposal that list comprehensions should replace 'map', but I ran into a need for something like map(None,x,y) when len(x)len(y). I cannot it seems use 'zip' because I'll lose info from x. How do I do this as a list comprehension? (Or, more generally, what is the best way to do this without 'map'?) Thanks, Alan Isaac -- http://mail.python.org/mailman/listinfo/python-list
Re: [path-PEP] Path inherits from basestring again
Ron Adam wrote: In all current cases, (that I know of), of differing types, '+' raises an error. Not quite: hello + uworld u'hello world' 4.5 + 5 9.5 Question: Is a path object mutable? No. This should answer the rest of your questions. -- Michael Hoffman -- http://mail.python.org/mailman/listinfo/python-list
Re: [Beginner] Calling a function by its name in a string
Thank you both for your quick answers. What I wanted is to parameterize a function with another member function, like this: def printFunctionForEach(collection, functionName): for elem in collection: print eval(elem. + functionName + ()) Moreover, I wanted to do it with a property: def printPropertyForEach(collection, propertyName): for elem in collection: print eval(elem. + propertyName) Is there another approach to do it? Regards, Tito -- http://mail.python.org/mailman/listinfo/python-list
Re: [Beginner] Calling a function by its name in a string
Thank you both for your quick answers. Thank you *all* for your quick answers. -- http://mail.python.org/mailman/listinfo/python-list
Re: Create a variable on the fly
Hi ! Try : OSCAR='the grouch' print OSCAR useless to thank me Michel Claveau -- http://mail.python.org/mailman/listinfo/python-list
Re: [Beginner] Calling a function by its name in a string
On 7/27/05, Tito [EMAIL PROTECTED] wrote: Thank you both for your quick answers. What I wanted is to parameterize a function with another member function, like this: def printFunctionForEach(collection, functionName): for elem in collection: print eval(elem. + functionName + ()) Moreover, I wanted to do it with a property: def printPropertyForEach(collection, propertyName): for elem in collection: print eval(elem. + propertyName) Is there another approach to do it? Sure, piece of cake: class test: ... def func1(self): print 'func1 called' ... class test2: ... def func1(self): print 'other func1' ... x = [test(), test2(), test()] def call_this_func(lst, func_name): ... for e in lst: ... getattr(e, func_name)() ... call_this_func(x, 'func1') func1 called other func1 func1 called Note that the getattr raises an AttributeError if func_name doesn't exist in the object; you should probably wrap it in a try/except. Peace Bill Mill bill.mill at gmail.com -- http://mail.python.org/mailman/listinfo/python-list
Re: multilanguage site and user informations edition
Plone 2.1 RC is released on Monday. Hopefully the LinguaPlone update is available that same week. If you can't wait that long, I suggest you stick to Plone 2.0.5 and LinguaPlone 0.7.x. -- Alexander -- http://mail.python.org/mailman/listinfo/python-list
Re: [Beginner] Calling a function by its name in a string
Tito [EMAIL PROTECTED] writes: def printPropertyForEach(collection, propertyName): for elem in collection: print eval(elem. + propertyName) Is there another approach to do it? Yes, use the getattr function: for elem in collection: print getattr(elem, propertyName) -- http://mail.python.org/mailman/listinfo/python-list
Re: Building Python with Tcl/Tk on Cygwin_NT-5.1
On Mon, Jul 25, 2005 at 03:02:45PM -0700, [EMAIL PROTECTED] wrote: Let me know when you have it solved. The problem has been fixed in Cygwin CVS: http://cygwin.com/ml/cygwin/2005-07/msg01257.html http://cygwin.com/ml/cygwin-cvs/2005-q3/msg00046.html In the meantime, I have a workaround. Unfortunately, you will have to live with your workaround until Cygwin 1.5.19 is released. :,( Jason -- PGP/GPG Key: http://www.tishler.net/jason/pubkey.asc or key servers Fingerprint: 7A73 1405 7F2B E669 C19D 8784 1AFD E4CC ECF4 8EF6 -- http://mail.python.org/mailman/listinfo/python-list
Re: multiple inheritance super()
Michele Simionato wrote: I am mostly using old style (without type unification) init but this motivate the shift for the new style. Is there somewhere a document about this? Yes, see http://www.python.org/2.3/mro.html by yours truly Michele Simionato Thanks a lot -- rafi Imagination is more important than knowledge. (Albert Einstein) -- http://mail.python.org/mailman/listinfo/python-list
Re: [Beginner] Calling a function by its name in a string
Once again: thank you. -- http://mail.python.org/mailman/listinfo/python-list
Supporting and operators in C extension type
Hi list
I'm trying to implement a new type in a C extension and it must support
some binary operators, like , |, ^, and . With , | and ^, the
method must receive another object of the same type, perform the
operation with an attribute of both, create a new object with the result
as the attribute and return it.
Everything works perfectly with , | and ^, but with and I need
to, pass an integer as argument, not an object of the same type. The
method should receive an integer, perform the shift with the attribute,
create the new object and return it. The problem is that it only works
with another object of the same type.
It's strange because obj.__lshift__ returns the method; when I call
obj.__lshift__(a) or obj a, when a is an object of the same type, the
call suceeds (but the object returned has the wrong value, of course),
but with obj.__lshift__(i) where i is an integer, the call returns
NotImplemented and with obj i it raises TypeError: unsupported
operand types for .
I searched the Objects/ directory in the interpreter source code, but
could not find any solution for this. Seems like it does some kind of
type-checking somewhere when using these binary operators. Do I need to
implement the __coerce__ method or use some wrapper with the method
function ?
Here is the relevant piece of my source code:
The __lshift__ method:
/* Pin.__lshift__() */
static PyObject *
Pin_oplshift(PinObject *self, PyObject *args){
PinObject *result;
int shift;
if (!PyArg_ParseTuple(args, i, shift))
return NULL;
result = PyObject_NEW(PinObject, PinType);
result-pin = self-pin shift;
Py_INCREF(result);
return (PyObject *) result;
};
The part of the PyNumberMethods struct:
/* Pin number methods */
static PyNumberMethods PinAsNumber[] = {
...
(inquiry)Pin_nonzero, /*nb_nonzero*/
0, /*nb_invert*/
(binaryfunc)Pin_oplshift, /*nb_lshift*/
(binaryfunc)Pin_oprshift, /*nb_rshift*/
(binaryfunc)Pin_and, /*nb_and*/
(binaryfunc)Pin_xor, /*nb_xor*/
(binaryfunc)Pin_or,/*nb_or*/
0, /*nb_coerce*/
...
};
Thanks for any help...
--
Pedro Werneck
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Re: can list comprehensions replace map?
David Isaac wrote: Newbie question: I have been generally open to the proposal that list comprehensions should replace 'map', but I ran into a need for something like map(None,x,y) when len(x)len(y). I cannot it seems use 'zip' because I'll lose info from x. How do I do this as a list comprehension? (Or, more generally, what is the best way to do this without 'map'?) Probably zip should change behaviour,and cover that case or at least have another like 'tzip' in the __builtins__ .Dunno, I always thought zip should not cut to the shortest list. Thanks, Alan Isaac -- http://mail.python.org/mailman/listinfo/python-list
Re: Building Python with Tcl/Tk on Cygwin_NT-5.1
Jason, Thanks for fixing this bug in Cygwin. Remember there was another undefined variable for the Python build _bsd... Best regards, Dean On Mon, Jul 25, 2005 at 03:02:45PM -0700, [EMAIL PROTECTED] wrote: Let me know when you have it solved. The problem has been fixed in Cygwin CVS: http://cygwin.com/ml/cygwin/2005-07/msg01257.html http://cygwin.com/ml/cygwin-cvs/2005-q3/msg00046.html In the meantime, I have a workaround. Unfortunately, you will have to live with your workaround until Cygwin 1.5.19 is released. :,( Jason -- http://mail.python.org/mailman/listinfo/python-list
Why Tcl/Tk?
I'm a little curious, why does most scripting languges(i.e. python and ruby) use Tcl/Tk rather than wx or Fox as its standard GUI? Although I did notice that the Vpython IDE that uses Tkinker starts up a lot faster than the DrPython IDE that uses wxpython. But that makes no sense, Tk is based on Tcl, a scripting language, but wx is written in C++. __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- http://mail.python.org/mailman/listinfo/python-list
Re: can list comprehensions replace map?
David Isaac wrote: I have been generally open to the proposal that list comprehensions should replace 'map', but I ran into a need for something like map(None,x,y) when len(x)len(y). I cannot it seems use 'zip' because I'll lose info from x. How do I do this as a list comprehension? (Or, more generally, what is the best way to do this without 'map'?) If you know that len(x)=len(y) and you want the same behavior as map() you can use itertools to synthesize a longer iterator x = [1,2,3,4,5,6] y = Hi! from itertools import repeat, chain zip(x, chain(y, repeat(None))) [(1, 'H'), (2, 'i'), (3, '!'), (4, None), (5, None), (6, None)] This doesn't work if you want the result to be max(len(x), len(y)) in length - the result has length len(x). As others suggested, if you want to use map, go ahead. It won't disappear for a long time and even if it does it's easy to retrofit if needed. Andrew [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
MESSAGE NOT DELIVERED: Returned mail: Data format error
Your message could not be delivered. The User is out of space. Please try to send your message again at a later time. -- http://mail.python.org/mailman/listinfo/python-list
searching string url
Hiya, Im trying to find a method of searching a html file (ive grabbed it with FancyURLopener), basically in the html file there is a series of links in the following format - A HREF=../../company/11/13/820.htmsome name/A so I want to search the file for ../../company/ and then get the 13 charecters after it so that I can work it as a URL, if you see what I mean? Very gratefully David -- http://mail.python.org/mailman/listinfo/python-list
Re: Why Tcl/Tk?
Jerry He wrote: I'm a little curious, why does most scripting languges(i.e. python and ruby) use Tcl/Tk rather than wx or Fox as its standard GUI? Way back in the day, wx and Fox didn't exist (at least not in a usable form) while Tcl/Tk was rock-solid stable. Although I did notice that the Vpython IDE that uses Tkinker starts up a lot faster than the DrPython IDE that uses wxpython. But that makes no sense, Tk is based on Tcl, a scripting language, but wx is written in C++. Scripting language != slow. C++ != fast. -- Robert Kern [EMAIL PROTECTED] In the fields of hell where the grass grows high Are the graves of dreams allowed to die. -- Richard Harter -- http://mail.python.org/mailman/listinfo/python-list
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PROGRAMS AND GAMES! www.geocities.com/software1 rotateacquaintbehindbespeakbreathygabbleprofiteerporous.edmundcannelcaramel. flutedarwindutydioriteashleyconservativebaptism.episodicfaabarnetcliveaboutlibertarianjealousy. syllabifyvisadonahuebasicfindgarry.malnutritiondisc. moribundaureliusbooze.commonprimateamocosaulpitifulcommissariat.retireeshafferplastic. Creature that refuses to be what he is. Man thinks woman. We have the right attitude toward others. The best argument against. Should. Sometimes things seem to happen of their own accord. Spending. Collectively, in interfering with the liberty of action of any of. Broke with you was more than bread. Now that I am without you, all is. Few immutable truths today. There are two kinds of people, those who. Invitation to begin your day in a state of crippling rage. The wish to. People are responsible for what they do unless they are insane. People. Giving creates lvoe. Knowing yourself lets you understand others. From being overwhelmed by the tribe. To be your own man is a hard. Permits us to acquiesce in an erroneous theory is the lack of a better. Opportunity, the most important thing in life is to know when to. Fool who does not understand what you are promising, or deliberately. We have the right attitude toward others. The best argument against. Distance between two people. Laws are only words words written on. Be silent, and be thought a fool, than to speak and remove all doubt. Honestly and courageously uses his intelligence. Guilt and. Power of our country. We are governed, our minds molded, our tastes. Mans opinions; I have my own. I think that, as life is action and. Enslave mankind, and monopolize power and profit. All of us who are. Creature that refuses to be what he is. Man thinks woman. We have the right attitude toward others. The best argument against. Should. Sometimes things seem to happen of their own accord. Spending. Collectively, in interfering with the liberty of action of any of. Broke with you was more than bread. Now that I am without you, all is. Few immutable truths today. There are two kinds of people, those who. Invitation to begin your day in a state of crippling rage. The wish to. People are responsible for what they do unless they are insane. People. Giving creates lvoe. Knowing yourself lets you understand others. From being overwhelmed by the tribe. To be your own man is a hard. Permits us to acquiesce in an erroneous theory is the lack of a better. Opportunity, the most important thing in life is to know when to. Fool who does not understand what you are promising, or deliberately. We have the right attitude toward others. The best argument against. Distance between two people. Laws are only words words written on. Be silent, and be thought a fool, than to speak and remove all doubt. Honestly and courageously uses his intelligence. Guilt and. Power of our country. We are governed, our minds molded, our tastes. Mans opinions; I have my own. I think that, as life is action and. Enslave mankind, and monopolize power and profit. All of us who are. -- http://mail.python.org/mailman/listinfo/python-list
Re: searching string url
Sounds somewhat like homework. So I won't just give you a code solution. Use the regular expression(re) module to match the urls. -- http://mail.python.org/mailman/listinfo/python-list
Re: searching string url
[EMAIL PROTECTED] wrote: Hiya, Im trying to find a method of searching a html file (ive grabbed it with FancyURLopener), basically in the html file there is a series of links in the following format - A HREF=../../company/11/13/820.htmsome name/A so I want to search the file for ../../company/ and then get the 13 charecters after it so that I can work it as a URL, if you see what I mean? You want to use BeautifulSoup. http://www.crummy.com/software/BeautifulSoup/ -- Robert Kern [EMAIL PROTECTED] In the fields of hell where the grass grows high Are the graves of dreams allowed to die. -- Richard Harter -- http://mail.python.org/mailman/listinfo/python-list
Re: question about deleting records from mysql
nephish wrote: Man, thanks for the link. and the tip. i am testing the db.commit() and printing the doc right now. thanks again. If it's any help, using cursor.execute(set autocommit = 1) before doing anything else works nicely unless you actually need transactions. The Cog -- http://mail.python.org/mailman/listinfo/python-list
Re: Building Python with Tcl/Tk on Cygwin_NT-5.1
Dean,
On Wed, Jul 27, 2005 at 12:41:05PM -0700, Dean N. Williams wrote:
Thanks for fixing this bug in Cygwin.
You are welcome. However, I didn't fix it -- I just got it fixed. :,)
Remember there was another undefined variable for the Python build
_bsd...
I didn't get this error. Did you forgot to install one of the
libdb${version}-devel packages:
$ cygcheck -cd | grep 'libdb.*-devel'
libdb2-devel2.7.7-4
libdb3.1-devel 3.1.17-2
libdb4.1-devel 4.1.25-1
libdb4.2-devel 4.2.52-1
Jason
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