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==========================
Example -- Using Deferreds
==========================
And of course, this is Twisted.
So there is a wealth of APIs that return a :api:`twisted.internet.defer.Deferred <Deferred>`.
A Deferred may also be returned from handler functions and their result will be used as the response body.
Here is a simple Google proxy, using `treq <https://github.com/twisted/treq>`_ (think Requests, but using Twisted)::
import treq
from klein import Klein
app = Klein()
@app.route('/', branch=True)
def google(request):
d = treq.get(b'https://www.google.com' + request.uri)
d.addCallback(treq.content)
return d
app.run("localhost", 8080)
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