Web3.py: debug_traceTransaction is not implemented

[hiqua]

The RPC method debug_traceTransaction (listed there for instance: https://github.com/ethereumjs/testrpc) is not implemented, and thus not callable directly using web3.py.
This method is not standard (according to https://github.com/ethereum/go-ethereum/wiki/Management-APIs#debug), and is not available in web3.js either.

Would it be desirable to have in web3.py, or is it out of scope of the project?

I would like to know before I spend time on a possible pull request for this feature.
Thanks!

Edit: I guess this applies to the whole debug API.

[carver]

For non-standard, client-specific APIs, I am of the opinion that we shouldn't build convenience functions to access them. We'll see if Piper disagrees, early next week.

You can bypass the convenience methods with something like: web3.manager.request_blocking('debug_traceTransaction', ["TX_ID_AS_HEX_STRING"])

If there is anything else in the list of Issues that would scratch an itch you have, or you have other ideas, I'm happy to talk them through!

[pipermerriam]

Wondering if there is a middleground? It's not documented, but web3 currently supports custom modules.

See: https://github.com/pipermerriam/web3.py/blob/master/web3/main.py#L110-L111

Maybe we can write the module but not include it in the Web3 object by default and just provide docs on how a user can include it?

[carver]

:+1: Adding a geth module with support for their custom calls makes a lot of sense, just not adding it to the default module list.

[step21]

Would be nice to have, as it is available thorugh rpc/ipc with geth.