Python

About the grammar
Dear all, I'm wondering why in Python's grammar, keyword arguments are specified as: argument: ... | test '=' test I would have expected something like argument: ... | NAME '=' test Indeed, I cannot imagine a case where the keyword is something else than an identifier. Moreover, in the Python l... 20 Apr 2010 15:48

Operations on sparse matrices
I am currently dealing with sparse matrices and have doubts on whether we can use 1.) dot (for matrix multiplication) and inv (inverse) operations of numpy on sparse matrices of CSR format. I initially constructed my sparse matrix using COO format and then converted it to CSR format now I want to know whether no... 23 Apr 2010 20:48

Python 2.6 SSL module: Fails on key file error, with Errno 336265225,without a key file.
I'm starting to convert from M2Crypto to Python 2.6's SSL module. So I tried a trivial test: import ssl import socket certs = "d:/projects/sitetruth/certificates/cacert.pem" sk = socket.socket(socket.AF_INET, socket.SOCK_STREAM) ssk = ssl.wrap_socket(sk, certfile=certs, cert_reqs=ssl.CERT_NONE) ssk.connec... 20 Apr 2010 15:49

gnu readline licensing?
Python provides a GNU readline interface... since readline is a GPLv3 library, doesn't that make python subject to the GPL? I'm confused because I thought python had a more BSD style license. Also, I presume programs written with the readline interface would still be subject to GPL... might want to put a warning ... 20 Apr 2010 18:28

python glibc crypt() function
luca72 wrote: Hello i have to do this : glibc crypt() function, using salt $1$abcdefgh$ cryptPw = crypt(plainPw, "$1$abcdefgh$") I can do it in python, with package i need? Thanks import ctypes lib = ctypes.CDLL("libcrypt.so.1") ... 20 Apr 2010 14:29

Code redundancy
Alan Harris-Reid wrote: Hi, During my Python (3.1) programming I often find myself having to repeat code such as... class1.attr1 = 1 class1.attr2 = 2 class1.attr3 = 3 class1.attr4 = 4 etc. Is there any way to achieve the same result without having to repeat the class1 prefix? B... 20 Apr 2010 14:29

UnicodeEncodeError during repr()
I'm getting a UnicodeEncodeError during a call to repr: Traceback (most recent call last): File "bug.py", line 142, in <module> element = parser.parse(INPUT) File "bug.py", line 136, in parse ps = Parser.Parse(open(filename,'r').read(), 1) File "bug.py", line 97, in end_item r = repr(... 20 Apr 2010 15:49

The ole Repetion != Concatination pitfall
Well I started learning Python last week, and in my first experiment I got caught when I changed: sieve = [ {1:True} for x in range(r)] to sieve = [{1:True}] * r I was expecting it to be equivalent to sieve = [{1:True},{1:True},...] but instead it's t = [{1:True}]; sieve = [t,t,...] Okay, I see this was ... 20 Apr 2010 15:48

Default paranmeter for packed values
Xavier Ho wrote: G'day Pythoneers, I ran into a strange problem today: why does Python not allow default paranmeters for packed arguments in a function def? def test(a = 1, b = (2, 3)): ... print a, b ... test() 1 (2, 3) def t(a, *b = (3, 4)): File "<inpu... 20 Apr 2010 15:48

Firefox: all I get is XML page source code
Wit's end on this. I have a script outputting a stream with: sys.stdout.buffer.write(("""\n<?xml version='1.0' encoding='utf-8'?> The script works normally in 2 browsers, but in Firefox all I see is source code. Also, running the script in iPhone from my server shows the same source code. Which is a little str... 18 Apr 2010 19:43