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- from twisted.internet import defer
- def c(res):
- print "HELLO!"
- raise Exception()
- return 2
- def f(_):
- print "HANDLED!"
- return _
- def end(_):
- print "END!"
- return _.value
- def new_f(_):
- print "HANDLED 2!"
- return _
- def a():
- l = defer.Deferred()
- l.addCallbacks(c, new_f)
- d = defer.Deferred()
- d.addCallback(c)
- d.addErrback(f)
- #if you comment this line all works as expected
- d.chainDeferred(l)
- d.addErrback(end)
- return d
- a().callback(2)
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