Re: SAX unicode and ascii parsing problem

goldtech, 30.11.2010 22:15: Think I found it, for example: line = 'my big string' line.encode('ascii', 'ignore') I processed the problem strings during parsing with this and it works now. That's not the right way of dealing with encodings, though. You should open the file with a well defined

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Re: Python 3 encoding question: Read a filename from stdin, subsequently open that filename

> This sounds like a strong prospect for how to get things working (I > didn't realize open would accept a bytes argument for the filename), > but I'm also interested in whether reading filenames from stdin and > subsequently opening them is supposed to "just work" given a suitable > encoding - lik

Re: Python 3 encoding question: Read a filename from stdin, subsequently open that filename

> The world does not revolve around Python. Unix filenames have been > encoding-agnostic long before Python was around. If Python3 does not > support this then it's a regression on Python's part. Fortunately, Python 3 does support that. Regards, Martin -- http://mail.python.org/mailman/listinf

Re: Python 3 encoding question: Read a filename from stdin, subsequently open that filename

> It'd be great if all programs used the same encoding on a given OS, > but at least on Linux, I believe historically filenames have been > created with different encodings. IOW, if I pick one encoding and go > with it, filenames written in some other encoding are likely to cause > problems. So I

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Re: Reading by positions plain text files

On 2010-12-01, javivd wrote: > On Nov 30, 11:43 pm, Tim Harig wrote: >> On 2010-11-30, javivd wrote: >> >> > I have a case now in wich another file has been provided (besides the >> > database) that tells me in wich column of the file is every variable, >> > because there isn't any blank or tab

Re: Change one list item in place

On 11/30/2010 8:28 PM, MRAB wrote: > On 01/12/2010 01:08, Gnarlodious wrote: >> This works for me: >> >> def sendList(): >> return ["item0", "item1"] >> >> def query(): >> l=sendList() >> return ["Formatting only {0} into a string".format(l[0]), l[1]] >> >> query() >> >> >> However,

Re: Python 3 encoding question: Read a filename from stdin, subsequently open that filename

On Wed, 2010-12-01 at 02:14 +, MRAB wrote: > If the filenames are to be shown to a user then there needs to be a > mapping between bytes and glyphs. That's an encoding. If different > users use different encodings then exchange of textual data becomes > difficult. That's presentation, that's s

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Re: Reading by positions plain text files

On 11/30/2010 08:03 PM, javivd wrote: On Nov 30, 11:43 pm, Tim Harig wrote: VARIABLE NAME POSITION (COLUMN) IN FILE var_name_1 123-123 var_name_2 124-125 var_name_3 126-126 .. .. var_name_N 512-513 (last positions) and no,

Re: How to initialize each multithreading Pool worker with an individual value?

On Wed, Dec 1, 2010 at 7:35 AM, Valery Khamenya wrote: > multithreading.pool Pool has a promissing initializer argument in its > constructor. > However it doesn't look possible to use it to initialize each Pool's > worker with some individual value (I'd wish to be wrong here) > > So, how to initia

Re: Reading by positions plain text files

On 01/12/2010 02:03, javivd wrote: On Nov 30, 11:43 pm, Tim Harig wrote: On 2010-11-30, javivd wrote: I have a case now in wich another file has been provided (besides the database) that tells me in wich column of the file is every variable, because there isn't any blank or tab character tha

Re: Python 3 encoding question: Read a filename from stdin, subsequently open that filename

On 01/12/2010 01:28, Nobody wrote: On Tue, 30 Nov 2010 18:53:14 +0100, Peter Otten wrote: I think this is wrong. In Unix there is no concept of filename encoding. Filenames can have any arbitrary set of bytes (except '/' and '\0'). But the filesystem itself neither knows nor cares about enc

Re: Reading by positions plain text files

On Nov 30, 11:43 pm, Tim Harig wrote: > On 2010-11-30, javivd wrote: > > > I have a case now in wich another file has been provided (besides the > > database) that tells me in wich column of the file is every variable, > > because there isn't any blank or tab character that separates the > > vari

Re: Change one list item in place

Thanks. Unless someone has a simpler solution, I'll stick with 2 lines. -- Gnarlie -- http://mail.python.org/mailman/listinfo/python-list

Re: Programming games in historical linguistics with Python

Have you considered entering all this data into an SQLite database? You could do fast searches based on any features you deem relevant to the phoneme. Using an SQLite editor application you can get started building a database right away. You can add columns as you get the inspiration, along with an

Re: Change one list item in place

On 01/12/2010 01:08, Gnarlodious wrote: This works for me: def sendList(): return ["item0", "item1"] def query(): l=sendList() return ["Formatting only {0} into a string".format(l[0]), l[1]] query() However, is there a way to bypass the l=sendList() and change one list item

Re: Python 3 encoding question: Read a filename from stdin, subsequently open that filename

On Tue, 30 Nov 2010 18:53:14 +0100, Peter Otten wrote: >> I think this is wrong. In Unix there is no concept of filename >> encoding. Filenames can have any arbitrary set of bytes (except '/' and >> '\0'). But the filesystem itself neither knows nor cares about >> encoding. > > I think you mi

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On Tue, Nov 30, 2010 at 6:37 AM, Xavier Heruacles wrote: > I'm basically a c/c++ programmer and recently come to python for some web > development. Using django and javascript I'm afraid I can develop some web > application now. But often I feel I'm not good at python. I don't know much > about ge

Re: Python 3 encoding question: Read a filename from stdin, subsequently open that filename

On Mon, 29 Nov 2010 21:26:23 -0800, Dan Stromberg wrote: > Does anyone know what I need to do to read filenames from stdin with > Python 3.1 and subsequently open them, when some of those filenames > include characters with their high bit set? Use "bytes" rather than "str". Everywhere. This means

Re: How to initialize each multithreading Pool worker with an individual value?

On Tue, Nov 30, 2010 at 1:35 PM, Valery Khamenya wrote: > Hi, > > multithreading.pool Pool has a promissing initializer argument in its > constructor. > However it doesn't look possible to use it to initialize each Pool's > worker with some individual value (I'd wish to be wrong here) > > So, how

Change one list item in place

This works for me: def sendList(): return ["item0", "item1"] def query(): l=sendList() return ["Formatting only {0} into a string".format(l[0]), l[1]] query() However, is there a way to bypass the l=sendList() and change one list item in-place? Possibly a list comprehension opera

Re: Python 3 encoding question: Read a filename from stdin, subsequently open that filename

On Tue, Nov 30, 2010 at 9:53 AM, Peter Otten <__pete...@web.de> wrote: > $ ls > $ python3 > Python 3.1.1+ (r311:74480, Nov  2 2009, 15:45:00) > [GCC 4.4.1] on linux2 > Type "help", "copyright", "credits" or "license" for more information. with open(b"\xe4\xf6\xfc.txt", "w") as f: > ...     f.w

Re: Python 3 encoding question: Read a filename from stdin, subsequently open that filename

On Tue, Nov 30, 2010 at 7:19 AM, Antoine Pitrou wrote: > On Mon, 29 Nov 2010 21:52:07 -0800 (PST) > Yingjie Lan wrote: >> --- On Tue, 11/30/10, Dan Stromberg wrote: >> > In Python 3, I'm finding that I have encoding issues with >> > characters >> > with their high bit set.  Things are fine with

Re: Python 3 encoding question: Read a filename from stdin, subsequently open that filename

On Tue, Nov 30, 2010 at 11:47 AM, Martin v. Loewis wrote: >> Does anyone know what I need to do to read filenames from stdin with >> Python 3.1 and subsequently open them, when some of those filenames >> include characters with their high bit set? > > If your files on disk use file names encoded i

Re: Programming games in historical linguistics with Python

2010/11/30 Dax Bloom : > Hello, > > Following a discussion that began 3 weeks ago I would like to ask a > question regarding substitution of letters according to grammatical > rules in historical linguistics. I would like to automate the > transformation of words according to complex rules of phono

Re: Reading by positions plain text files

On 30/11/2010 21:31, javivd wrote: Hi all, Sorry, newbie question: I have database in a plain text file (could be .txt or .dat, it's the same) that I need to read in python in order to do some data validation. In other files I read this kind of files with the split() method, reading line by lin

Re: how to go on learning python

On 11/30/2010 9:37 AM, Xavier Heruacles wrote: I'm basically a c/c++ programmer and recently come to python for some web development. Using django and javascript I'm afraid I can develop some web application now. But often I feel I'm not good at python. I don't know much about generators, descrip

Re: Catching user switching and getting current active user from root on linux

On Wed, Dec 1, 2010 at 8:54 AM, Tim Harig wrote: > Well you could use inotify to trigger on any changes to /var/log/wtmp. > When a change is detected, you could check of deltas in the output of "who > -a" to figure out what has changed since the last time wtmp triggered. This is a good idea and y

Re: Catching user switching and getting current active user from root on linux

On 2010-11-30, mpnordland wrote: > I have situation where I need to be able to get the current active > user, and catch user switching eg user1 locks screen, leaves computer, > user2 comes, and logs on. > basically, when there is any type of user switch my script needs to > know. Well you could u

Catching user switching and getting current active user from root on linux

I have situation where I need to be able to get the current active user, and catch user switching eg user1 locks screen, leaves computer, user2 comes, and logs on. basically, when there is any type of user switch my script needs to know. -- http://mail.python.org/mailman/listinfo/python-list

Re: Reading by positions plain text files

On 2010-11-30, javivd wrote: > I have a case now in wich another file has been provided (besides the > database) that tells me in wich column of the file is every variable, > because there isn't any blank or tab character that separates the > variables, they are stick together. This second file sp

Re: IMAP support

On 30 Lis, 22:26, Adam Tauno Williams wrote: > On Tue, 2010-11-30 at 13:03 -0800, pakalk wrote: > > Please, give me an example of raw query to IMAP server? > > > > I'm not certain what you mean by "raw query". m = imap() m.

How to initialize each multithreading Pool worker with an individual value?

Hi, multithreading.pool Pool has a promissing initializer argument in its constructor. However it doesn't look possible to use it to initialize each Pool's worker with some individual value (I'd wish to be wrong here) So, how to initialize each multithreading Pool worker with the individual value

Reading by positions plain text files

Hi all, Sorry, newbie question: I have database in a plain text file (could be .txt or .dat, it's the same) that I need to read in python in order to do some data validation. In other files I read this kind of files with the split() method, reading line by line. But split() relies on a separator

Re: IMAP support

On Tue, 2010-11-30 at 13:03 -0800, pakalk wrote: > Please, give me an example of raw query to IMAP server? I'm not certain what you mean by "raw query". > And why do you focus on "Nevermind is so ekhm... nevermind... "??

Re: SAX unicode and ascii parsing problem

can't check right now but are you sure it's the parser and not this line d.write(csv+"\n") that's failing? what is d? -- http://mail.python.org/mailman/listinfo/python-list

Re: SAX unicode and ascii parsing problem

snip... > > I'm just as stumped as I was when you first asked this question 13 > minutes ago. ;-) > > regards >  Steve > snip... Hi Steve, Think I found it, for example: line = 'my big string' line.encode('ascii', 'ignore') I processed the problem strings during parsing with this and it works n

Re: IMAP support

Please, give me an example of raw query to IMAP server? And why do you focus on "Nevermind is so ekhm... nevermind... "?? Cannot you just help? -- http://mail.python.org/mailman/listinfo/python-list

Re: SAX unicode and ascii parsing problem

On 11/30/2010 3:43 PM, goldtech wrote: > Hi, > > I'm trying to parse an xml file using SAX. About half-way through a > file I get this error: > > Traceback (most recent call last): > File "C:\Python26\Lib\site-packages\pythonwin\pywin\framework > \scriptutils.py", line 325, in RunScript > e

SAX unicode and ascii parsing problem

Hi, I'm trying to parse an xml file using SAX. About half-way through a file I get this error: Traceback (most recent call last): File "C:\Python26\Lib\site-packages\pythonwin\pywin\framework \scriptutils.py", line 325, in RunScript exec codeObject in __main__.__dict__ File "E:\sc\b2.py",

Re: [Q] get device major/minor number

On Tue, 30 Nov 2010 21:35:43 +0100, Thomas Portmann wrote: > Thank you very much Dan, this is exactly what I was looking for. > > > Tom You're very welcome. -- http://mail.python.org/mailman/listinfo/python-list

Re: [Q] get device major/minor number

On Tue, Nov 30, 2010 at 9:18 PM, Dan M wrote: > On Tue, 30 Nov 2010 21:09:14 +0100, Thomas Portmann wrote: >> In the example below, I would like to get the major (8) and minor (0, 1, >> 2) numbers of /dev/sda{,1,2}. How can I get them? > > I think the os.major() and os.minor() calls ought to do w

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SAX unicode and ascii parsing problem

Hi, I'm trying to parse an xml file using SAX. About half-way through a file I get this error: Traceback (most recent call last): File "C:\Python26\Lib\site-packages\pythonwin\pywin\framework \scriptutils.py", line 325, in RunScript exec codeObject in __main__.__dict__ File "E:\sc\b2.py",

Re: Memory issues when storing as List of Strings vs List of List

OW Ghim Siong writes: > I have a big file 1.5GB in size, with about 6 million lines of > tab-delimited data. I have to perform some filtration on the data and > keep the good data. After filtration, I have about 5.5 million data > left remaining. As you might already guessed, I have to read them

Re: [Q] get device major/minor number

On Tue, 30 Nov 2010 21:09:14 +0100, Thomas Portmann wrote: > Hello all, > > In a script I would like to extract all device infos from block or > character device. The "stat" function gives me most of the infos (mode, > timestamp, user and group id, ...), however I did not find how to get > the de

[Q] get device major/minor number

Hello all, In a script I would like to extract all device infos from block or character device. The "stat" function gives me most of the infos (mode, timestamp, user and group id, ...), however I did not find how to get the devices major and minor numbers. Of course I could do it by calling an ext

Re: Python 3 encoding question: Read a filename from stdin, subsequently open that filename

> Does anyone know what I need to do to read filenames from stdin with > Python 3.1 and subsequently open them, when some of those filenames > include characters with their high bit set? If your files on disk use file names encoded in iso-8859-1, don't set your locale to a UTF-8 locale (as you app

Re: C struct to Python

On Tue, Nov 30, 2010 at 10:57 AM, Eric Frederich wrote: > I am not sure how to proceed. > I am writing a Python interface to a C library. > The C library uses structures. > I was looking at the struct module but struct.unpack only seems to > deal with data that was packed using struct.pack or some

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I am not sure how to proceed. I am writing a Python interface to a C library. The C library uses structures. I was looking at the struct module but struct.unpack only seems to deal with data that was packed using struct.pack or some other buffer. All I have is the struct itself, a pointer in C. Is

Re: Using property() to extend Tkinter classes but Tkinter classes are old-style classes?

On 11/30/10 11:00 AM, Giacomo Boffi wrote: Terry Reedy writes: On 11/28/2010 3:47 PM, pyt...@bdurham.com wrote: I had planned on subclassing Tkinter.Toplevel() using property() to wrap access to properties like a window's title. After much head scratching and a peek at the Tkinter.py source,

Re: Using property() to extend Tkinter classes but Tkinter classes are old-style classes?

Giacomo Boffi wrote: Terry Reedy writes: On 11/28/2010 3:47 PM, pyt...@bdurham.com wrote: I had planned on subclassing Tkinter.Toplevel() using property() to wrap access to properties like a window's title. After much head scratching and a peek at the Tkinter.py source, I realized that all Tk

Re: Python 3 encoding question: Read a filename from stdin, subsequently open that filename

Albert Hopkins wrote: > On Tue, 2010-11-30 at 11:52 +0100, Peter Otten wrote: > Dan Stromberg wrote: >> >> > I've got a couple of programs that read filenames from stdin, and > then >> > open those files and do things with them. These programs sort of do >> > the *ix xargs thing, without requiri

Re: Using property() to extend Tkinter classes but Tkinter classes are old-style classes?

Terry Reedy writes: > On 11/28/2010 3:47 PM, pyt...@bdurham.com wrote: >> I had planned on subclassing Tkinter.Toplevel() using property() to wrap >> access to properties like a window's title. >> After much head scratching and a peek at the Tkinter.py source, I >> realized that all Tkinter class

Re: remote control firefox with python

On Nov 28, 4:22 pm, News123 wrote: > Hi, > > I wondered whether there is a simpe way to > 'remote' control fire fox with python. > > With remote controlling I mean: > - enter a url in the title bar and click on it > - create a new tab > - enter another url click on it > - save the html document of

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Re: how to go on learning python

Howdy Xavier! [Apologies for the length of this; I didn't expect to write so much!] I've been a Python programmer for many years now (having come from a PHP, Perl, C, and Pascal background) and I'm constantly learning new idioms and ways of doing things that are more "Pythonic"; cleaner, more

Re: Memory issues when storing as List of Strings vs List of List

On Tue, 30 Nov 2010 18:29:35 +0800 OW Ghim Siong wrote: > > Does anyone know why is there such a big difference memory usage when > storing the matrix as a list of list, and when storing it as a list of > string? That's because any object has a fixed overhead (related to metadata and allocatio

Re: Python 3 encoding question: Read a filename from stdin, subsequently open that filename

On Mon, 29 Nov 2010 21:52:07 -0800 (PST) Yingjie Lan wrote: > --- On Tue, 11/30/10, Dan Stromberg wrote: > > In Python 3, I'm finding that I have encoding issues with > > characters > > with their high bit set.  Things are fine with strictly > > ASCII > > filenames.  With high-bit-set characters,

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On Mon, 29 Nov 2010 15:11:28 -0800 (PST) Spider wrote: > > 2.7 includes many features that were first released in Python 3.1. The > > faster io module ... > > I understand that I/O in Python 3.0 was slower than 2.x (due to quite > a lot of the code being in Python rather than C, I gather), and t

Re: Memory issues when storing as List of Strings vs List of List

On 11/30/2010 04:29 AM, OW Ghim Siong wrote: a=open("bigfile") matrix=[] while True: lines = a.readlines(1) for line in lines: data=line.split("\t") if several_conditions_are_satisfied: matrix.append(data) print "Number of lines read:", len(li

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Programming games in historical linguistics with Python

Hello, Following a discussion that began 3 weeks ago I would like to ask a question regarding substitution of letters according to grammatical rules in historical linguistics. I would like to automate the transformation of words according to complex rules of phonology and integrate that script in

Re: How does GC affect generator context managers?

Jason wrote: > As I understood it, when the "with" block exits, the __exit__() method > is called immediately. This calls the next() method on the underlying > generator, which forces it to run to completion (and raise a > StopIteration), which includes the finally clause... right? > That is tru

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Most of the examples presented here can use the "decorator pattern" instead. Especially the window system On Mon, Nov 29, 2010 at 5:27 PM, Gregory Ewing wrote: > Paul Rubin wrote: > > The classic example though is a window system, where you have a "window" >> class, and a "scroll bar" class, an

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I'm basically a c/c++ programmer and recently come to python for some web development. Using django and javascript I'm afraid I can develop some web application now. But often I feel I'm not good at python. I don't know much about generators, descriptors and decorators(although I can use some of it

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Re: Python 3 encoding question: Read a filename from stdin, subsequently open that filename

On Tue, 2010-11-30 at 11:52 +0100, Peter Otten wrote: Dan Stromberg wrote: > > > I've got a couple of programs that read filenames from stdin, and then > > open those files and do things with them. These programs sort of do > > the *ix xargs thing, without requiring xargs. > > > > In Python 2, t

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In article <58fe3680-21f5-42f8-9341-e069cbb88...@r19g2000prm.googlegroups.com>, rustom wrote: > Looking around I found this: > http://bytes.com/topic/python/answers/43330-unittest-vs-py-test > where Raymond Hettinger no less says quite unequivocally that he > prefers test.py to builtin unittest

Re: remote control firefox with python

On Sunday 28 November 2010, 16:22:33 News123 wrote: > Hi, > > > I wondered whether there is a simpe way to > 'remote' control fire fox with python. > > > With remote controlling I mean: > - enter a url in the title bar and click on it > - create a new tab > - enter another url click on it > - save

Re: Memory issues when storing as List of Strings vs List of List

OW Ghim Siong wrote: > Hi all, > > I have a big file 1.5GB in size, with about 6 million lines of > tab-delimited data. I have to perform some filtration on the data and > keep the good data. After filtration, I have about 5.5 million data left > remaining. As you might already guessed, I have to

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Re: Memory issues when storing as List of Strings vs List of List

OW Ghim Siong wrote: > I have a big file 1.5GB in size, with about 6 million lines of > tab-delimited data. How many fields are there an each line? > I have to perform some filtration on the data and > keep the good data. After filtration, I have about 5.5 million data left > remaining. As you m

Re: Python 3 encoding question: Read a filename from stdin, subsequently open that filename

Dan Stromberg wrote: > I've got a couple of programs that read filenames from stdin, and then > open those files and do things with them. These programs sort of do > the *ix xargs thing, without requiring xargs. > > In Python 2, these work well. Irrespective of how filenames are > encoded, thin

Memory issues when storing as List of Strings vs List of List

Hi all, I have a big file 1.5GB in size, with about 6 million lines of tab-delimited data. I have to perform some filtration on the data and keep the good data. After filtration, I have about 5.5 million data left remaining. As you might already guessed, I have to read them in batches and I d

Re: Python 3 encoding question: Read a filename from stdin, subsequently?open that filename

Dan Stromberg wrote: > I've got a couple of programs that read filenames from stdin, and then > open those files and do things with them. These programs sort of do > the *ix xargs thing, without requiring xargs. > > In Python 2, these work well. Irrespective of how filenames are > encoded, thin

Re: Possible to determine number of rows affected by a SQLite update or delete command?

On Tue, Nov 30, 2010 at 2:29 PM, wrote: > Is there a cursor or connection property that returns the number of rows > affected by a SQLite update or delete command? > The cursor has a rowcount attribute. The documentation of the sqlite3 module says the implementation is "quirky". You might take

Possible to determine number of rows affected by a SQLite update or delete command?

Is there a cursor or connection property that returns the number of rows affected by a SQLite update or delete command? Or, if we want this information, do we have to pre-query our database for a count of records that will be affected by an operation? Thank you, Malcolm -- http://mail.python.org