Hello guys,

I have to install Twisted 2.50 on our Ubuntu Dapper servers. The problem is that I have to use the Twisted 2.50 tarball since Dapper apt repositories only have Twisted 2.40. The installation went smoothly and my twisted applications works except that when I try to run my scripts using the epoll reactor (twistd -ny ./myscript -r epoll) I get this error.

Traceback (most recent call last):
  File "/usr/bin/twistd", line 21, in ?
  File "/usr/lib/python2.4/site-packages/twisted/scripts/twistd.py", line 27, in run
    app.run (runApp, ServerOptions)
  File "/usr/lib/python2.4/site-packages/twisted/application/app.py", line 374, in run
  File "/usr/lib/python2.4/site-packages/twisted/application/app.py", line 354, in parseOptions
    usage.Options.parseOptions(self, options)
  File "/usr/lib/python2.4/site-packages/twisted/python/usage.py", line 177, in parseOptions
    self.__dispatch[optMangled](optMangled, arg)
  File "/usr/lib/python2.4/site-packages/twisted/python/usage.py", line 333, in <lambda>
    fn = lambda name, value, m=method: m(value)
  File "/usr/lib/python2.4/site-packages/twisted/application/app.py", line 276, in opt_reactor
  File "/usr/lib/python2.4/site-packages/twisted/application/reactors.py", line 80, in installReactor
  File "/usr/lib/python2.4/site-packages/twisted/application/reactors.py", line 60, in install
  File "/usr/lib/python2.4/site-packages/twisted/python/reflect.py", line 357, in namedAny
    topLevelPackage = __import__(trialname)
  File "/usr/lib/python2.4/site-packages/twisted/internet/epollreactor.py", line 22, in ?
    from twisted.python import _epoll
ImportError: cannot import name _epoll

On my workstation (LinuxMint 3.0), the epoll reactor works fine. The difference is that I installed Twisted via apt-get. Thanks in advance for anyone who can point me to the right way.

Alvin Delagon