Nigel Smart <ni...@compsci.bristol.ac.uk> writes:
>> "set" is a built-in set data type in Python 2.4 and later. Twisted
>> has a compatibility module for older versions of Python. On my
>> system, the twisted/python/compat.py file (from which the code tries
>> to import "set") has
>>
>> try:
>> set = set
>> except NameError:
>> from sets import Set as set
>>
>> which simply tests to see if "set" is defined, otherwise it imports
>> it From the sets module, which defines a Set class in old Python
>> versions.
>
> Have now added this line, and I get the error....
Uh, it was supposed to be a solution for you to add :-( It was an
explanation that you have a broken installation of Twisted.
First of all, Python works no unlike Java with regard to it's PYTHONPATH
environment variable. On my system I have installed Twisted into
~/opt/lib/python/ and have set PYTHONPATH to that same value.
Inside of ~/opt/lib/python/ I have
-rwxr-xr-x 1 mgeisler users 230K May 16 2007 gmpy.so
drwxr-xr-x 24 mgeisler users 4.0K Sep 16 2008 twisted
drwxr-xr-x 3 mgeisler users 4.0K Sep 16 2008 zope
among other files.
You can check that things are installed nicely by switching to some
other directory and starting the interactive python interpreter:
% python
Python 2.4.3 (#1, Jun 11 2009, 14:09:58)
[GCC 4.1.2 20080704 (Red Hat 4.1.2-44)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from twisted import version
>>> version
Version('twisted', 2, 5, 0)
Likewise for GMPY:
>>> import gmpy
>>> x = gmpy.mpz(1234567891234567891234567)
>>> len(str(x**12345))
297410
>> Which Python version are you using (python -V)? Which distribution is
>> this? Twisted is a standard component which is surely packaged for
>> the distribution -- there should be no need to installing it
>> yourself.
>
> Python 2.4.3 (#1, Sep 3 2009, 15:37:37)
That is fine, we have an old Redhat here with the same Python version.
> We have Centos as the OS, it is a managed distributed system.
> - i.e. the filestore is shared and used by 150 odd machines.
>
> So I cant just add packages etc. If I want something installed which my
> path does not pick up I either have to
> a) Search around to find it on the system
> or
> b) Install it myself in my own space
> Clearly b usually takes less time ;-)
Heh, yeah.
> Also no-one in the dept seems to use python for anything, so I doubt
> python related stuff is instaleld. Which means option a is unlikely to
> work.
It's not like it will mess things up to install Python, Twisted, and
GMPY globally. The packages will just sit nicely in the corner and
nobody will notice :-)
--
Martin Geisler
VIFF (Virtual Ideal Functionality Framework) brings easy and efficient
SMPC (Secure Multiparty Computation) to Python. See: http://viff.dk/.
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