How do I get event log information from pyethereum?

edmundedgar · December 2015

So I've got some tests that create contracts with pyethereum and do various things with them, but I'm puzzled over how to get information about events they log.

A simplified example:

from ethereum import tester as t

s = t.state()
code = """contract LogTest {
            event LogMyNumber(uint);

            function LogTest() {
            }

            function logSomething() {
                LogMyNumber(4); 
            }
        }"""

logtest = t.state().abi_contract(code, language='solidity', sender=t.k0)
logtest.logSomething()

#number_i_logged = WHAT DO I DO HERE?
#print "You logged the number %d" % (number_i_logged)

I run this and get:

No handlers could be found for logger "eth.pow"
{'': 4, '_event_type': 'LogMyNumber'}

That json that's getting printed is the information I want, but can someone explain, or point me to an example, of how I might capture it and load it into a variable in python so that I can check it and do something with it? There seems to be something called log_listener that you can pass into abi_contract that looks like it's related but I couldn't figure out what to do with it.

SLSD123 · March 2016

I am also trying to figure this out. I can get the log filter information but I cannot get the args from the event. Anybody out there figure this out yet?

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How do I get event log information from pyethereum?

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