Re: make a string a list
On May 29, 11:30 pm, Nikhil [EMAIL PROTECTED] wrote: or a string iterable ? How can I do that. I have lots of '\r\n' characters in the string which I think can be easier if it were made into a list and I can easily see if the required value (its a numeral) is present in it or not after some position or after some characters' position. Thanks, Nikhil If you just want to check required value then you can even use Sets or build your own hash table. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python Unicode to String conversion
First make sure your DB encoding is UTF-8 not the latin1
The error I keep having is something like this:
ERREUR: Séquence d'octets invalide pour le codage «UTF8» : 0xe02063
then try this:
def smart_str(s, encoding='utf-8', errors='strict'):
Returns a bytestring version of 's', encoded as specified in
'encoding'.
if not isinstance(s, basestring):
try:
return str(s)
except UnicodeEncodeError:
return unicode(s).encode(encoding, errors)
elif isinstance(s, unicode):
return s.encode(encoding, errors)
elif s and encoding != 'utf-8':
return s.decode('utf-8', errors).encode(encoding, errors)
else:
return s
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Re: escaping only double quotes
string = Butler's 15\ TV s = my string goes here %s % string Couldn't find anything wrong in string = Butler's 15\ TV s = my string goes here %s % string -- http://mail.python.org/mailman/listinfo/python-list
Re: escaping only double quotes
You could write a simple escape function.
def escape(html):
Return the given TEXT with ampersands, quotes and carets
encoded.
return html.replace('', 'amp;').replace('',
'lt;').replace('', 'gt;').replace('', 'quot;').replace(',
'#39;')
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Re: JavaScript
python has modules for forms and other things... and for it? Check out httplib and urlib2, it might be useful for you. -- http://mail.python.org/mailman/listinfo/python-list
Re: So what exactly is a complex number?
On Thu, 2007-08-30 at 20:11 -0500, Lamonte Harris wrote: Like in math where you put letters that represent numbers for place holders to try to find the answer type complex numbers? You shouldnt worry about it in python, its pretty large to handle all your calc. -- http://mail.python.org/mailman/listinfo/python-list
Re: Google spreadsheets
On Aug 31, 5:40 pm, Michele Simionato [EMAIL PROTECTED] wrote: I would like to upload a tab-separated file to a Google spreadsheet from Python. Does anybody have a recipe handy? TIA, Michele Simionato Probably its irrelevant to python. Use should see Google Spreadsheet API and use it in your python application. http://code.google.com/apis/spreadsheets/ -- http://mail.python.org/mailman/listinfo/python-list
Re: sorting a list of lists
i would like to sort a list of lists. The list is first sorted on the second item in the sub-lists (which I can do), then on the third item (which I can't). Write a comparator instead of dirty hacks mylistoflist.sort(mycomparator) def mycomparator(a, b): #do -- http://mail.python.org/mailman/listinfo/python-list
Re: sorting a list of lists
Taking advantage of stable sorting is totally not a hack. The OP just tried the two sorting steps in the wrong order. I didnt say not to use stable sorting, but write a generic function and hacky code. It is always better to adopt a generic approach. -- http://mail.python.org/mailman/listinfo/python-list
Re: Learning Python - Have Question.
I'm just learning Python, and I have a question about os.path.join(dirpath, name) and its use. Simply put, I haven't figured out how to use it. First thing you have to remember while using python is everything is an object. os.join.path concatenates one or more path for example os.path.join(c:, myfolder) represent a path relative to current dir on c: drive. I was looking through the Python reference material in the wee hours of the morning and checking out some of the modules. I was keenly interested in the os module, as it is necessary for me to learn this stuff in order to begin my first real Python project. Dont worry Python is quite easy to learn, just keep on coding in python. Oh, I have one more question. So far everything that I've played with yields only the filename of file. I am aware that os.walk will place the pathnames and filenames in a tuple, but I'm wondering if there is a way to input a full path directory from within Python. Specifically, I want to be able to get directories like one would get by entering ls -l at a *nix shell prompt. you could easily do it with python. Its more than your expectation. The best would be to call os.system(shell cmd). You can also print tuple in your own way. Cheers! Deepak -- http://mail.python.org/mailman/listinfo/python-list
Re: Python web service ...
My question is how difficult is to set up a web server that can run python easy ? should I try ZOPE or there is something better in mind ? Just install Apache and run Python as CGI thats the best solution I found for my apps. Thats the best and faster way to move python apps on web. -- http://mail.python.org/mailman/listinfo/python-list
Re: Restricted Access
Do you have an IBM s/370 running VM/CMS? VM was sort of an OS for running multiple OSs, so it would be the restricted environment G I'm having currently working on OS/2 and Linux platform, I've designed a web based ide for python and i wish to restrict some commands and user can only access i.e rwx in his folder. Best! -- http://mail.python.org/mailman/listinfo/python-list
Re: Restricted Access
You'll need to make your own AccessControl/ZopeGuards.py-like module, and probably subclass the RestrictionMutator to enable/disable certain functionnality (interdiction of names beginning by '_' for example is hard coded). Your reply is pretty hopeful, I saw that one, its the only fractional part. I'm agree with others that I need to setup a safe runtime enviornment rather than detecting harmful code. This should be possible by providing a wrapper function for file and open (see the Guards.py module). Thats a nice idea, I guess it should work. I should try it really quick! Thanks! Best! iapain -- http://mail.python.org/mailman/listinfo/python-list
Re: Restricted Access
googling for python restricted execution might give you some clues. I've already assumed that there is no rexec for me as i am using python 2.4. Yeah its much more difficult that my imagination. Should I go for alternatives like 1. Assume every one who is using this webide, wont corrupt system 2. Use some tricks to encrypt the user path and do lots of replacement on user code and o/p. or something else? Best! iapain -- http://mail.python.org/mailman/listinfo/python-list
Re: Restricted Access
unless you're willing to build a restricted runtime that runs on top of the core inter- preter, you should assume that anyone writing a Python script that's executed by your program has access to everything that your Python process has access to... I think using replacements I can ban atleast OS module and about files, either i should ban file open or write my own module something like rexec, truefully i dont know if I can write that one or not. I was thinking that this gonna take few days but looking much more difficult. Thanks Fred! for nice tutorials on www. -- http://mail.python.org/mailman/listinfo/python-list
Re: Restricted Access
my_innocent_object = __import__(''.join([chr(110+x) for x in [1, 5]]))
Thats really smart way, yeah i had plan to scan and detect but I think
its not gonna work.
Creating a restricted execution environment is *hard*. As far as I know,
even Microsoft has never attempted it. And for all of Sun's resources and
talent, security holes are sometimes found even in Java.
Does that mean there is no way to implement restricted enviorment?
Best!
iapain
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Re: Best command for running shell command
where I'm not interested in the output, I only want to make sure that the command was executed OK. How should I invoke this (in a Unix/linux environment)? Remember few things about executing program within python 1. Create a subprocess or child process and execute it. 2. You should use Timeout stratagy i.e your execution took more than provided time then timeout this process. In linux/unix you may use singnal alarm to implement it. Best! -- http://mail.python.org/mailman/listinfo/python-list
Re: Restricted Access
The most knowledgeable people have effectively given up, in regard to Python. I guess now I am up with only one option, i.e hope that user input code wont be evil to the system. **which is rarely possible** -- http://mail.python.org/mailman/listinfo/python-list
Re: Restricted Access
Brett Cannon is currently trying to come up with a comprehensive spec and implementation of a sandboxed Python interpreter, for use in Mozilla as a JavaScript replacement. (look in the python-dev archives for more) I'm not sure he is working or not, latest i read was he purposed new restricted enviornment for python. Best! -- http://mail.python.org/mailman/listinfo/python-list
Restricted Access
I'm developing a webIDE for python and I've 2 questions regarding it. 1. How can i disable some of the modules without deleting. e.g I wish to disable os module. 2. How can i force user code to access only his particular folder, I dont want to create uses in unix, e.g fp = open(PATH, 'w') # If this PATH is defined then use can access files else he cant .. is there is any way? Regards! iapain -- http://mail.python.org/mailman/listinfo/python-list
Re: Restricted Access
Tim Chase wrote: If you're prepared for the massive breakage that will ensue, you can chmod go-rwx /usr/lib/python2.3/os.* No, I cant change permission or delete the module, the best would be something to detect 'import os' in user code .. but If i go with chroot jail approch then everything will be like what i want. But chroot jail approch would take much space on webserver, what would happen if number of users are large. Another alternative might just be to copy the python libraries to some place in the user's homedir (whatever their original library path was), revoke execute non-user execute privs from the python executable (chmod go-x `which python`), and then change python to be a script that runs something like chroot $HOME/ python $@. Allow per-user access to this script via sudo. Its having the same problem. The idea on which i am working is a webide(which i already created) and a user file system(on which i am working now) so that each user can access python globally and files from his own folder, without adding them in unix user list. Best! -- http://mail.python.org/mailman/listinfo/python-list
Re: Executing a DOS program from within Python
Use os.system and if you wanna get rid of console window use subprocess
as gary said, you could have better options like killing proc if it
hang/stuck using win32api (if you are using windows) else process
timeout.
ret = os.system('sample.exe') # ret will have return code and os.system
execute sample.exe
#using subprocess
import subprocess
process = subprocess.Popen('sample.exe', stdout=subprocess.PIPE)
#you can print error/output using stderr/stdout pipe
Both are easy to implement!
Thanks!!
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Re: timeout a process
Thanks Tim, Yeah win32api is working normally. -- http://mail.python.org/mailman/listinfo/python-list
timeout a process
Hello, I am trying to build and infinite loop handler in python 2.4 on windows platform. The problem is that i want to create a process and forcely kill/timeout after 2 sec to handle infinite loop in a gcc complied exe on cygwin. something like below os.system(mycpp.exe) # this exe is compiled with g++ and having an infinite loop I wish to terminate this after 2 sec. I've tried Watchdog and deamon thread.. but nothing seem to work here. -- http://mail.python.org/mailman/listinfo/python-list
Re: import module and execute function at runtime
Hi, if you want to import module dynamically, you can use __import__ .. always remember modules are objects .. mStr=sys mod=__import__(mStr) # Now u can use mod.version .. but cant specify the attribute using other variable, like u did mod.version should read it http://diveintopython.org/functional_programming/dynamic_import.html -- http://mail.python.org/mailman/listinfo/python-list
