🌐 Mailman 3 September 2001 - Python-list - python.org

RE: Repost: execfile() confusion
by Nathaniel Gray Sept. 30, 2001

Sept. 30, 2001

Tim Peters wrote: > [Nathaniel Gray] >> ... >> Please, somebody, anybody, what's going on?? > > I'm afraid it takes too long to explain. The Ref Man warns that mutating > locals won't always work, and you've bumped into a place where it doesn't > work. So don't do that. Your life will be much easier if you always pass > an explicit namespace dict (or two, if you care about the local/global > distinction) to execfile. Uses that don't pass explicit dicts are likely to > get deprecated anyway. Ah. "Here there be dragons." I suspected that might be the answer. Where in the Ref Man does it talk about mutating locals? Aha, in the description of locals(), sensibly enough. > [snip] If you use execfile without > namespace-dict arguments at other than module scope, I'm afraid the shortest > path to understanding is studying the implementation (in which case you'll > eventually learn-- but without profit --that mutating locals() in fact never > works when calling a function, and that what you're seeing is no deeper than > this: > >>>> def f(): > ... x = 1 > ... locals()['x'] = 42 > ... print x > ... >>>> f() > 1 >>>> Most enlightening! > I could give you tricks to worm around that, but won't without large bundles > of untraceable cash: seeking to mutate locals by magic is disgusting, and > you can and should find a cleaner (meaning explicit) approach. Yeah, yeah, I know. I just like to be evil every now and then. It's just plain fun. You should see my object-oriented Matlab code. ;-) -n8 -- Nathaniel Gray California Institute of Technology Computation and Neural Systems --

1 0

Off-topic: hiding your email address - don't bother...
by Skip Montanaro Sept. 30, 2001

Sept. 30, 2001

(My apologies for the off-topic post. Python-list(a)python.org is the only large mailing list/newsgroup I read with any regularity, so this subject is only germane to me in this context.) More and more people are resorting to various schemes to try and hide their email addresses from email address harvesters. It's frustrating to me to get mail bounces when I reply to posts and forget to un-doctor your email address. I think it's a fruitless exercise for a few reasons: * If I reply-to-all to a message of yours I will get an address like skipNO(a)SPAMmojam.com in the To: or CC: headers. If I notice it and remove "NO" and "SPAM", I've just screwed you, because your email address is now going to show up in mailing list archives or Usenet headers. If I don't notice, I get a bounce. No great loss perhaps, though I'm a bit frustrated because my response to perhaps your request won't reach you, and you might miss the response to your message when skimming c.l.py (or have it expire when you're out of town on a business trip). What are the chances that I will realize I should move your email address to the BCC field? Slim, at best. If I remember to do all the right things, what about Alex or Guido, one of the Tims or one of the bots? * Your email address probably appears in plenty of other places accessible to the harvesters, including: your personal or corporate websites, friends' or associates' websites, your soccer club website, the archives of this and other mailing lists or newsgroups (none of the hypermail/pipermail/etc archives use particularly complex schemes to hide addresses and once upon a time you posted messages *without* doctoring your email address), SourceForge, or source code you wrote that happens to be available on the net. * Other people have probably given it out. That might be your dimwitted ISP who thinks that filthy lucre from a direct marketing company is more valuable than your good will, or the guy in the next cubicle who just CC'd you on a post to alt.binaries.britney-spears. Try though you might, you probably still get lots of spam. They find you, no matter what. Case in point. I switched ISPs from MediaOne Express to AT&T @Home just a couple weeks ago (because the latter bought the former). I had to select a user id and I wound up with an email address quite a bit unlike anything else I had ever had before. I didn't care, because I didn't intend to ever use it. *I* certainly never publicized it. Lo and behold, during a service call a few days ago the tech said I should check my @Home email once in awhile because they use it to communicate with their customers. I checked and found a "welcome to @Home" message and two spams. I bet you know the conclusion of this missive: Don't bother trying to protect your email address. Resistance is futile. If you want to filter out spam, find a service you like that filters email (like SpamCop or your ISP), learn how to use procmail, or learn to write sendmail milters in Python or get Jason Mastaler's TMDA system that works with QMail (there - I snuck in *two* Python code references into my message so it's not off-topic!). In short, do something that stands a real chance of helping. Doctoring up your email address isn't going to cut it. You're just sticking your head in the sand... NsOk-iSpP@ApMo-bLoYx .Yc'oRmS, -- Skip Montanaro (skip(a)pobox.com) http://www.mojam.com/ http://www.musi-cal.com/

5 5

Re: Library wish: rchown and rchmod
by Boyd Roberts Sept. 30, 2001

Sept. 30, 2001

"Gabriel Ambuehl" <gabriel_ambuehl(a)buz.ch> a écrit dans le message news: mailman.1001772152.25852.python-list(a)python.org... > -----BEGIN PGP SIGNED MESSAGE----- > rchown and rchmod (recursive chown and recursive chmod) (I don't care > for the name but only for the functionality ;-). i'd suggest something like ftw(3) and call 'em with that.

2 1

connect to website providing login & pwd
by (-:fs) Sept. 30, 2001

Sept. 30, 2001

hi, i'm rather new to python and try to connect to a webpage this works fine (i get the html-text) when the page is not secured when it is a secure page, which requires a login and a password, how can i provide these ??? i use the code from httplib like this V V V V V V V V V V V V V V V V V V V V import httplib import sys import getopt import string opts, args = getopt.getopt(sys.argv[1:], 'd') dl = 0 for o, a in opts: if o == '-d': dl = dl + 1 host = '192.168.11.13:8080' selector = '/test/manage/' >>>>>>>>>>> trying to call the manage window of a ZOPE server if args[0:]: host = args[0] if args[1:]: selector = args[1] h = httplib.HTTP() h.set_debuglevel(dl) h.connect(host) h.putrequest('GET', selector) h.putheader("login", "test") >>>>>>>>>>>>> ??????????????? doesn't h.putheader("password", "test") >>>>>>>>>>>> ??????????????? work h.endheaders() status, reason, headers = h.getreply() print 'status =', status print 'reason =', reason print if headers: for header in headers.headers: print string.strip(header) print print h.getfile().read() V V V V V V V V V V V V V V V V V V V V thanks for any help steindl friedrich (-:fs)

2 1

Error keeps coming up
by Ron White Sept. 30, 2001

Sept. 30, 2001

I installed 2.1.1 Python on a win me machine and when I run a program that has an error (like a syntax error) I continue to get that same error even when I try to run another program. How do I get rid of the first program so it's error doesn't keep coming up? Thanks for any help you can give me. Ron -- Ron White Amateur Radio WA0MWW

2 1

Mod_python / IIS running Python scripts
by tub4jxr＠hotmail.com Sept. 30, 2001

Sept. 30, 2001

How do you configure or run IIS 5 so that python interpreter doesn't start a new instance each time a script is run?? Is there an up-to-date mod_perl type module available or can IIS run the interpreter as desired without some other piece of software????

2 1

Re: Why so few Python jobs?
by Boyd Roberts Sept. 30, 2001

Sept. 30, 2001

"Laura Creighton" <lac(a)strakt.com> a écrit dans le message news: mailman.1001711824.2150.python-list(a)python.org... > I know of 2 companies that considered doing their development work in > Python but concluded that though the core language was terrific, the > libraries were fragmentary, incomplete, ... that's fixable :)

2 2

Error with int()
by Arturo P�rez Mulas Sept. 30, 2001

Sept. 30, 2001

Hello, I am running python 2.1.1 under Windows XP BETA, and get the following error: >>> int('a') Traceback (most recent call last): File "<interactive input>", line 1, in ? ValueError: invalid literal for int(): a Help anyone? Thank you

6 5

Are user-defined objects good keys?
by weeks＠vitus.scs.agilent.com Sept. 30, 2001

Sept. 30, 2001

The issue of identity, equality, and hashing strikes me as unsettled in general. And, in my opinion, Python "got it wrong". But I don't want to thrash out this issue. I'd just like to know how to program. So: Suppose I define a class. I don't define __cmp__; so two instances are "==" iff they have the same id. I also don't define __hash__. Also, the instances are mutable. Let inst be an instance, and let n be an integer. In my python installation, the following are true: A. hash(n) == n B. hash(inst) == hash(id(inst)) Regarding A: Is hash() used to create hash indices for dictionaries? If so, is the identity function a good hash function for integer keys? Regarding B: Is B true for all python implementations? If not, then is it true that C. hash(inst) == fn(id(inst)) for *some* function fn()? If either B or C is true, then most user-defined mutable instances can be used as dictionary keys. (I say "most" because most user-defined mutable instances will not redefine __cmp__.) My central question is: Can I use user-defined mutable instances (that are "==" iff their ids are equal) as dictionary keys? On my system I can. What about others? Regards, Greg

4 3

Trying to build Ming SWF-output library with Python?
by Antaeus Feldspar Sept. 30, 2001

Sept. 30, 2001

I have been trying to install the Ming software library for output of SWF ("Flash") files on my Linux box, and the Python bindings. As far as I can tell, installing Ming went without a hitch, but the Python bindings were considerably hitched. In particular, trying to make "mingc.pyd" seemed to be the major problem, as it resulted in the following log: *** bash$ make mingc.pyd dllwrap --dllname mingc.pyd --driver-name gcc --def mingc.def \ -o mingc.pyd ming_wrap.o -s --entry _DllMain@12 \ --target=i386-mingw32 -Llib/ -lpython15 make: dllwrap: Command not found make: *** [mingc.pyd] Error 127 bash$ *** >From what I've been able to make out from my research, the "mingw32" may be just coincidence, and not related to the Ming software library. In any case, though, neither I nor any of my Linux friends have been able to come up with what the Makefile *should* be to make it work. Can anyone shed more light on this? -jc

3 2