The new opcodes introduced in Constantinople are not supported

[HarryR]

As per title, see: https://blog.ethereum.org/2019/02/22/ethereum-constantinople-st-petersburg-upgrade-announcement/ - the relevant EIPs are:

• https://eips.ethereum.org/EIPS/eip-145
• Skinny CREATE2 EIPs#1014
• 'EXTCODEHASH' opcode EIPs#1052
• EIP-1234: Constantinople Difficulty Bomb Delay and Block Reward Adjustment EIPs#1234

Newer versions of the Solidity compiler emit the 0x1c (SHR) opcode as part of the prelude, however it's not possible to run these contracts using PyEthereum. I am using ethereum.tools.tester because it allows me to test Solidity code directly from within Python without any other dependencies.

Furthermore, PyEthereum doesn't seem to have any support for Constantinople, aside from brief mentions in config.py, messages.py, state.py and test_blocks.py.

And neither does PyEthereum have any mention of Byzantium. What is the best course of action here? I would love to be able to keep using PyEthereum, especially for its ethereum.tools.tester.

eth-tester v0.1.0-beta.39 supports these new opcodes, as does PyEVM.

Does this mean that PyEthereum is currently unmaintained? Or should be refactored to use eth-tester and PyEVM as dependencies instead?