🌐 Mailman 3 August 2004 - Python-list - python.org

Re: Finding all time periods for a given interval within a date range
by Waldemar Osuch Aug. 4, 2004

Aug. 4, 2004

Graeme Longman wrote: > Hi everyone, > > I was wondering if anyone has written some Python code which uses a start > date and end date and a given interval (day, month or year) and outputs all > the time periods for that range and interval. > > For example you may wish to find all the months between the dates > '2004-02-14' and '2004-08-04'. You would maybe use a function where you pass > in those starting and ending dates and the interval 'month' and you'd get > back a list of those months. I guess you would need to year part of the date > too, so ['2004-02', '2004-03', '2004-04', '2004-05', '2004-06', '2004-07', > '2004-08']. If you had passed in 'day' as the interval then you would be > given back a list of all the days in those months. Try using dateutil module by Gustavo Niemeyer found at: https://moin.conectiva.com.br/DateUtil from datetime import date from dateutil.rrule import * d1 = date(2004,2,14) d2 = date(2004,8,4) for d in rrule(MONTHLY, d1, until=d2): print d.year, d.month 2004 2 2004 3 2004 4 2004 5 2004 6 2004 7 Substitute MONTHLY with DAILY in the rrule and you will get list of days Waldek

1 0

Question on coding QCheckListView (newbee)
by dusty Aug. 4, 2004

Aug. 4, 2004

I have several years experience using Delphi writing apps in windoz (not professional) and now in a effort to completely remove windoz, I am trying to re-write my apps using Python, PyQt and Qt Designer. I am using a QCheckListView and have a need to read the text and level (parent or child) of a selected item. I am confused by the C code information in the QT help and have been unsuccessful in extracting this information. I would appreciate any help I can get with code examples.

1 0

Re: converting to string
by Jeff Shannon Aug. 4, 2004

Aug. 4, 2004

Ajay wrote: >hi! > >how do i go about converting a Python object or tuple to a string. >i am currently doing >import cPickle as pickle >str = pickle.dumps(obj) > >is thate efficient? is that the best way to do it? > > The "best way to do it" depends very much on what sort of data you're trying to convert, and what you intend to do with the string once you have it. (One could argue ;) that the "best way" would require *not* using the name 'str' to store your string, since that will mask the name of the builtin str() function -- which function might actually do what you want, given the extremely vague description of your requirements.) Pickle is intended to create a serialized version of an object, i.e. one that can be saved to disk or sent through a network port and later restored to active use. The fact that this serialized version is a string is really just an implementation detail, though it's one that's extremely unlikely to change. If what you really want is a displayable string representation of your object/tuple, you might be better off using str() or repr(), possibly playing with the object's __str__() or __repr__() methods in order to get it to display itself usefully. These won't necessarily let you reconstruct the object from the string, but then you don't list that as a requirement. Jeff Shannon Technician/Programmer Credit International

1 0

Re: How to force a single number to be a tuple
by Peter Otten Aug. 4, 2004

Aug. 4, 2004

Gandalf wrote: >>y = (2,) >> > Funky. However, very logical. You can also write: >>> () == (,) File "<stdin>", line 1 () == (,) ^ SyntaxError: invalid syntax >>> (1) == (1,) False >>> (1, 2) == (1, 2,) True >>> Very logical indeed... > Python is the best. :-) Of course, the above not withstanding :-) Peter

2 1

Re: asyncore, asynchat and threads
by Peter Hansen Aug. 4, 2004

Aug. 4, 2004

Joshua Moore-Oliva wrote: > I have to not return any data until there is data to > return for that specific connection. If there is some > way to send data down a asynchat > socket from another thread (thread-safely), or to > somehow wake up an asynchat class, that would be great. It's been years since I used asyncore (I find Twisted much simpler to use) but at least in theory such a thing is possible. Twisted has a callFromThread() method that can be used to get a callback in another thread to be called from the "reactor" (the equivalent of the asyncore core loop), which would do what you want. Asyncore might have similar facilities. I don't _fully_ grasp what you are doing, and I don't work well without pictures in such cases (got a whiteboard handy? draw a picture and send me a digital photo :-), but so far it doesn't sound like you have anything approaching unusual, compared to many other applications I've seen doing the sorts of things yours seems to be doing. -Peter

2 1

Downsampling streaming MP3s in Windows...
by clarkcase＠gmail.com Aug. 4, 2004

Aug. 4, 2004

I've been playing around with Edna, which is a Python streaming MP3 server. My setup is a WindowsXP box with Python 2.3. I'd like to downsample my high bitrate files, and based on some suggestions I found on the Edna mailing list, I replaced the line where the MP3 was being opened with the following line: f = win32pipe.popen('c:\lame\lame --mp3input -f -b 64 "' + fullpath + '" -', 'r') where "fullpath" contains the path to the MP3 file. When try to listen to the results through WinAmp, the stream seems to buffer up, but then I get a few seconds of choppy noise and then nothing. Do I need to somehow buffer the pipe on the server side? Any suggestions would be appreciated. Thanks, Clark

1 0

Re: file IO
by Darren Dale Aug. 4, 2004

Aug. 4, 2004

Jeff Epler wrote: > Are you using Windows? That would mean the answer is almost certainly > "something to do with carriage returns and binary vs text mode". The > lack of a trailing newline on the last line of your example can also > make for additional trouble (though my tests on unix, with stdio, mmap, > and StringIO didn't ever give me a 4-byte file, windows might give you > the file "a\r\nb" when viewed in binary format, "a\nb" when viewed in > text format) > > I doubt that the mmap module's readline knows whether the file was > opened in universal text mode---that's a pure Python invention, while > mmap takes a file descriptor. > I am using windows (for now), and reading files created on a Linux machine. I think you are right, it has something to do with mmap and the /r/n windows convention. Thank you (very much) for your response... I am sane again. Darren

2 1

Python CGI question/issue
by candrade＠gmail.com Aug. 4, 2004

Aug. 4, 2004

I have a working python script that takes in content from a form, cleans it up, adds html formatting and then places it into my index.html page on my server. When I had index.html set up as : -rw-rw-r-- 1 carlos wheel 3517 Aug 4 09:51 index.html I could not write back to the file, Traceback (most recent call last): File "/usr/local/www/cgi-bin/bob.py", line 24, in ? file=open("../data/index.html","w") IOError: [Errno 13] Permission denied: '../data/index.html' [Wed Aug 4 09:50:47 2004] [error] [client X.X.X.X] Premature end of script headers: /usr/local/www/cgi-bin/bob.py and I though well shoot okay I need to make index.html -rw-rw-rw-, when then made me a little paranoid. Is there a more simpler way to make it possible for me to write back to index.html?

2 1

Data Warehouse Architect -- West Suburban Chicago
by expecthealth Aug. 4, 2004

Aug. 4, 2004

JOB DESCRIPTION Data Warehouse Architect (Permanent, Full-Time) ______________________________________________________________________ _________ Position Description: The Data Warehouse Architect is responsible for design, specifications, development, testing and deployment for Oracle data warehouse functionality, reports, extracts and interfaces. Leads small teams of developers to achieve prioritized deliverables. Position Qualifications: (Education, experience and skill levels) · BS/BA Degree in Computer Science or equivalent · 2 to 5 years experience implementing Oracle data warehouse solutions · Experience with the Oracle eBusiness Suite Application version 11i data model · Experience working with Oracle TARs via Metalink · Working knowledge of the function of the eBusiness Suite Applications version 11.i · Strong working knowledge of Oracle Warehouse Builder (OWB), Oracle Reports and Oracle Discoverer reporting and developer tools. · Strong working knowledge of PL/SQL · User community contact requires communications skills Position Characteristics: · Excellent verbal and written communications skills · Proven problem-solving skills · Ability to work on multiple tasks and assignments. · Interact with configurators, DBAs, etc. on coordinated deliverables · Ability to work with limited supervision · Maintain appropriate documentation for all designs and development work · Follow published development methodology and assist in refinements as appropriate · Resolve Help Desk Tickets as necessary · Share "on call" responsibilities for after-hours support as required · Other duties as needed and or assigned SALARY RANGE: $80's, depending on background. Position located in the Western suburbs of Chicago Please forward resumes to: Bill Norris, Manager DIAMOND CONSULTING INC. 630-586-0000 x19 specmark(a)aol.com

1 0

Re: How to force a single number to be a tuple
by Roy Smith Aug. 4, 2004

Aug. 4, 2004

In article <mailman.1138.1091636758.5135.python-list(a)python.org>, "Jinming Xu" <cybermanxu(a)hotmail.com> wrote: > Hi Folks, > > I have a number sequence, which is put into a tuple like this: > > y=2, 3.0, 4.5 > > I can manipulate the sequence as a tuple when it has more than 1 number. But > when the sequence has only 1 number, like > > y=2 > > I have trouble to manipulate it as a tuple. I guess there must be a way to > forece a single number to be a tuple. Could anyone please tell me that? You're going to get a zillion responses to this one. The syntax is a bit funky: y = (2,)

2 1