Python Forum

Hi, I'm looking for an algo that would convert a list such as: I'm using python to prototype the algo: this will move to C in an embedded system where an int has 16 bits - I do not wish to use any python library. l1 = #represents the decimal number 12345678 l2 = func (l1) # l2 = #represents 0x12D687

Why doesn't MySQLdb provide a function like this: def QuoteSQL(Str, DoWild) : """returns a MySQL string literal which evaluates to Str. Needed for those times when MySQLdb's automatic quoting isn't good enough.""" Result = for Ch in str(Str) : if Ch == "\0" : Ch = "\\0" elif Ch == "\010" :

I have a requirement to store timestamps in a database. Simple enough you might think but finding a suitably general format is not easy. The specifics are 1) subsecond resolution - milliseconds or, preferably, more detailed 2) not bounded by Unix timestamp 2038 limit 3) readable in Java 4) writable portably in Perl which seems to mean that...

I'm not posting this just to initiate some religious flame war, though it's the perfect subject to do so. No, I actaully want some serious advice about these two languages and since I think usenet is the best arena to find it, here ya' go. So, here's my delimna: I want to start a blog. Yeah, who doesn't. Yet, I want learn the guts of it...

Hi I have read some mail on the dev mailing list about PEP 318 and find the new Syntax really ugly. def foo(x, y): pass I call this foo(1, 2), this isn't really intuitive to me! Also I don't like the brackets.

Let's say I use a GPL'd python module (e.g. something installed in site-packages) in an application. Let's also say I use py2exe to package and distribute said application. Is what I'm distributing a "derived work" of the GPL'd python? Or is py2exe's packaging of the module's .pyc file and my application code's .pyc files a "mere...

Is anyone capable of providing Python advantages over PHP if there are any? Cheers, L.

( Surely if this question has been asked for a zillion of times... ) ( and sorry for my english! ) I'm impressed with python. I'm very happy with the language and I find Python+Pygame a very powerful and productive way of writing 2D games. I'm not, at this moment, worried about execution speed of the small game I'm working on (it runs at...

The pros and cons of making 'print' a function in Python 3.x are well discussed at: http://mail.python.org/pipermail/python-dev/2005-September/056154.html Alas, it appears that the effect of this pep would be to make it impossible to use the name 'print' in a backward compatible manner. Indeed, if a program is to compile in both Python...

Many of you are familiar with Jason Orendorff's path module <http://www.jorendorff.com/articles/python/path/>, which is frequently recommended here on c.l.p. I submitted an RFE to add it to the Python standard library, and Reinhold Birkenfeld started a discussion on it in python-dev...

I have function which takes an argument. My code needs that argument to be an iterable (something i can loop over)...so I dont care if its a list, tuple, etc. So I need a way to make sure that the argument is an iterable before using it. I know I could do... def foo(inputVal): if isinstance(inputVal, (list, tuple)): for val in inputVal:...

Hello! Does anyone know how to find the name of a python data type. Conside a dictionary: Banana = {} Then, how do i ask python for a string representing the name of the above dictionary (i.e. 'Banana')?

Python user and advocate Bruce Eckel is disappointed with the additions (or lack of additions) in Python 3: http://www.artima.com/weblogs/viewpost.jsp?thread=214112

I understand that the standard Python distribution is considered the C-Python. Howerver, the current C-Python is really a combination of C and Python implementation. There are about 2000 Python files included in the Windows version of Python distribution. I'm not sure how much of the C-Python is implemented in C but I think the more modules...

Peter Norvig's creative thinking triggered renewed interest in PEP 289. That led to a number of contributors helping to re-work the pep details into a form that has been well received on the python-dev list: http://www.python.org/peps/pep-0289.html In brief, the PEP proposes a list comprehension style syntax for creating fast, memory...

Please visit http://www.python.org/peps/pep-0204.html first. As you can see, PEP 204 was rejected, mostly because of not-so-obvious syntax. But IMO the idea behind this pep is very nice. So, maybe there's a reason to adopt slightly modified Haskell's syntax? Something like --> (1,3..10) --> same values as above, but return...

In the process of learning about some deeper details of Python I am curious if it is possible to write a 'prefix' code assigning to a and b something special, so, that Python gets trapped in an endless loop in a line with: if a==b: print 'OK' I mean, it would be of much help to me on my way to understanding Python to know how such prefix...

I have to generate a list of N random numbers (integer) whose sum is equal to M. If, for example, I have to generate 5 random numbers whose sum is 50 a possible solution could be . Is there a simple pattern or function in Python to accomplish that? Thanks and regards Francesco

Hello, everyone. I would appreciate any advice that someone could give me on my future career path. Here is my situation: I am a bright Junior in a very well-respected private high school, taking almost all AP and accelerated classes. I am HIGHLY interested in technology, more specifically the field of Computer Science and software...

Seems like we need a simple way to extend Python syntax that doesn't break existing syntax or clash with any other syntax in Python, is easy to type, easy to read, and is clearly distinct from the "base" syntax. Seems like we could put the @ symbol to good use in these situations. Examples: print @(separator = None) x, y, z ...

I know this might not be the correct group to post this, but I thought I'd start here. A co-worker considers himself "old school" in that he hasn't seen the light of OOP.(It might be because he's in love with Perl...but that's another story.) He thinks that OOP has more overhead and is slower than programs written the procedural way. I...

http://python.org/doc/2.4.1/lib/module-re.html http://python.org/doc/2.4.1/lib/node114.html --------- QUOTE The module defines several functions, constants, and an exception. Some of the functions are simplified versions of the full featured methods for compiled regular expressions. Most non-trivial applications always use the compiled...

I have a Python snippet: f = open("blah.txt", "r") while True: c = f.read(1) if c == '': break # EOF # ... work on c Is some way to make this code more compact and simple? It's a bit spaghetti.

GvR has commented that he want to get rid of the lambda keyword for Python 3.0. Getting rid of lambda seems like a worthy goal, but I'd prefer to see it dropped in favour of a different syntax, rather than completely losing the ability to have anonymous functions. Anyway, I'm looking for feedback on a def-based syntax that came up in a...

Hi, the <> inequality test operator has been deprecated for a loooooong time. Is there a reason that it doesn't trigger a DeprecationWarning? $ python2.2 -Wall -c "print 0 <> 0" 0 $ python2.3 -Wall -c "print 0 <> 0" False