[cdavid]

At least 2 years ago, twisted did not use libevent, it was mostly pure python except for a very tiny piece of code (and optional stuff of course).

I am sure you could write a libevent-based reactor, but twisted was started a long time ago (10 years ? The twisted book in o'Reilly was published in 2005), before libevent existed I think.

[tptacek]

No, libevent existed before Twisted; its first release was in 2000, and we used it extensively at Arbor Networks just a couple years later.

[cdavid]

Thanks for the correction. Seems that I confused the dates with libev that came after.