On 09:40 am, ser...@gmail.com wrote:
>Hello to all!
>
>Why traceback doesn't include call of g() here?
Tracebacks are tricky, and inlineCallbacks doesn't make them look
exactly like they would look if you didn't have Deferreds.
twisted.python.failure is a little bit better at handling tracebacks
from this sort of code than the traceback module is, so if you write the
code like this things will at least be a little better:
from twisted.python.failure import Failure
def decor1():
try:
res = yield f(*argv, **kw)
except:
Failure.printTraceback()
else:
defer.returnValue(res)
Notice also that I moved returnValue outside of the try block.
`returnValue` is implemented using exceptions, so you *must not* catch
and handle the exception it raises or it won't work.
Jean-Paul
>import traceback
>from twisted.internet import defer, reactor
>
>def decor1(f, *argv, **kw):
> @defer.inlineCallbacks
> def decor1():
> try:
> res = yield f(*argv, **kw)
> defer.returnValue(res)
> except:
> traceback.print_exc()
> return decor1
>
>@defer.inlineCallbacks
>def g():
> raise AttributeError
> yield defer.succeed(1)
>
>@decor1
>@defer.inlineCallbacks
>def f():
> yield g()
>
>f()
>reactor.run()
>
>I see just:
>Traceback (most recent call last):
> File "C:\testing\test.py", line 9, in decor1
> res = yield f(*argv, **kw)
>AttributeError
>
>
>
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