Python Forum

Hi, I'm using python to develop some proof-of-concept code for a cryptographic application. My code makes extended use of python's native bignum capabilities. In many cryptographic applications there is the need for a function 'get_highest_bit_num' that returns the position number of the highest set bit of a given integer. For example:

i have a balckjack code, which does not seem to run, in python, it comes up with syntax error, i have try sortng it out. does not seem to work. below is my code, if anyone can work out wht wrong with it. that will be great. thereis an attched file, to see the code more cleaer. from random import choice as randomcards def total(hand): ...

Can Python replace PHP? Can I use a python program to make an interface to a mysql 4.X database? If that's possible where can I find a tutorial?

Just fooling around this weekend. Wrote and timed programs in C, Perl and Python. Each Program counts to 1,000,000 and prints each number to the console as it counts. I was a bit surprised. I'm not an expert C or Perl programming expery, I'm most familiar with Python, but can use the others as well. Here are my results: C = 23 seconds...

We are considering switching to the dollar sign ($) for self, instead of the period ( . ) we are using now in Prothon. Ruby uses the at-sign (@) for self, but our new usage of self also includes replacing the period for some attribute references, as in obj$func() versus obj.func(), and too many programs treat that as an email address and...

On 27 Apr 2004 16:34:56 -0700, has.temp2@virgin.net (has) wrote: >David MacQuigg <dmq@gain.com> wrote in message news:<bniq80hiib0gauiltuntk9jvia2getbnj4@4ax.com>... > >> Example of Simplified Classes ( Prototypes ) >> ============================================ > > > >Class-based OOP by any other name. But then, I've pointed this out

Hi, I remembered reading a MSc thesis about compiling Perl to Java bytecodes (as in java class files). At least, it seems that someone had compiled scheme to java class files quite successfully. I'm wondering if something of such had been attempted in python, as in compiling X language into .pyc. I do not understand the schematics of .pyc...

I am a very satisfied user of Python and have been for number of years. I would never willing use another language. I wish all good things for Python, and that moves me to express some thoughts about Python's future prospects. I submit that the future expansion of Python usage is constrained by Python's lack of a CPAN-like facility, and I...

Why does slicing a tuple returns a new tuple instead of a view of the existing one, given that tuples are immutable ? I ended up writing a custom ImmutableSequence class that does this, but I wonder why it is not implemented for tuples. George

Fuzzyman wrote: > Cameron Laird wrote: > > >>This is a serious issue. >> >>It's also one that brings Tcl, mentioned several >>times in this thread, back into focus. Tcl presents >>the notion of "safe interpreter", that is, a sub- >>ordinate virtual machine which can interpret only

Kind of fun exercise (no good for British English). def units(value, units='bytes'): magnitude = abs(value) if magnitude >= 1000: for prefix in Scott.Daniels@Acm.Org

Has anyone written a Queue.Queue replacement that avoids busy-waiting? It doesn't matter if it uses os-specific APIs (eg WaitForMultipleObjects). I did some googling around and haven't found anything so far. Because I know someone will ask: no, the busy-waiting hasn't been a problem in my app. I'm just interested in reading the code. p

Hi all... How can I find out the number of significant digits (to the right of the decimal place, that is) in a double? At least, I *think* that's what I'm asking for. For instance: 0.103 --> 3 0.0103 --> 4 0.00103 --> 5 0.000103 --> 6 0.0000103 --> 7

Hello all, I am in the process of writing a multithreading program and what I was wondering is a sleep command in an executing function will affect the threads below it? Here is a basic example of what I mean. def main(): temp_var = True while temp_var == True: if

Playing around with comparisons of functions (don't ask), I discovered an interesting bit of unintuitive behaviour: >>> (lambda y: y) < (lambda y: y) False Do the comparison again and things become even more bizarre: >>> (lambda y: y) < (lambda y: y) True

Hi all I am writing a multi-user accounting/business system. Data is stored in a database (PostgreSQL on Linux, SQL Server on Windows). I have written a Python program to run on the client, which uses wxPython as a gui, and connects to the database via TCP/IP. The client program contains all the authentication and business logic. It has...

I'm trying to move beyond Emacs/Vim/Kate and was wondering if Eclipse is better and if it is the *best* IDE for Python. Should I leave Emacs and do Python coding in Eclipse? Chris

After spending time I should have been sleeping working on it, the try python site is much more functional. It now allows statements, including multi-line statements and expressions. You can't create code objects yet, so it's still more a programmable calculator than anything real. I've got some of the tutorial text (literally) up as well....

Hi, Python beginner here and very much enjoying it. I'm looking for a pythonic way to find how many listmembers are also present in a reference list. Don't count duplicates (eg. if you already found a matching member in the ref list, you can't use the ref member anymore). Example1: ref= list=

I have a function in a program that works something like this. def load_pic_data(width,heigth,inpdat, filt=TRUE): data='' total=0 tnum=0 size=100 for y in range(0,heigth): row='' for x in range(0,width):

When you compile the expression for i in range(1000): pass does Python make an iterator for range(), and then generate the values on the fly? Or does Python actually allocate the list and then step through it? I was under the impression that recent releases of Python optimize this

Hi, I'm interested in using python to start writing a CAD program for electrical design. I just got done reading Steven Rubin's book, I've used "real" EDA tools, and I have an MSEE, so I know what I *want* at the end of this; I just have never taken on a programming task of this magnitude. I've seen that some are using python as a utility...

>>> u'\xbd' u'\xbd' >>> print _ Traceback (most recent call last): File "<stdin>", line 1, in ? UnicodeEncodeError: 'ascii' codec can't encode character u'\xbd' in position 0: ordinal not in range(128) >>>

I understand the difference, but I'm just curious if anyone has any strong feelings toward using one over the other? I was reading that a disadvantage to the more general usage (i.e. env) is that it finds the first python on the path, and that might not be the proper one to use. I don't know if that's a real issue most of the time, but it's at...

I'm new at Python and I need a little advice. Part of the script I'm trying to write needs to be aware of all the files of a certain extension in the script's path and all sub-directories. Can someone set me on the right path to what modules and calls to use to do that? You'd think that it would be a fairly simple proposition, but I can't...