Untwisted

Get Untwisted

Untwisted is a variation of Twisted, exploiting features in Python 2.5, principally PEP 342. An advantage is more linear control flow

This is the same as using twisted.internet.defer.inlineCallbacks()

For example this commit achieves more linear control flow by exploiting PEP 342

Generally, asynchronous patterns like the following can be simplified like synchronous code,

Before

def example():

  # Two cases with common end statements, duplicated because of asynchronous
  # call in one case
  if case1:

    def callback(result):
      handleAsyncResult(result)

      cleanup()

    doSomeAsyncThing().then(callback)

  else:
    cleanup()

After

from untwisted import promise

@promise.resume
def example():
  if case1:
    result = yield doSomeAsyncThing()

    handleAsyncResult(result)

  cleanup()

By avoiding explicit callbacks, Untwisted achieves more linear, less "twisted" control flow