I am trying to follow this example: https://github.com/ethereum/pyethapp/wiki/The_Console

However, at the point where I should compile the code, I get an error:

In [34]: print c contract NameReg{ event AddressRegistered(bytes32 indexed name, address indexed account); mapping(address => bytes32) toName; function register(bytes32 name){ toName[msg.sender] = name; AddressRegistered(name, msg.sender); } function resolve(address addr) constant returns(bytes32 name){ return toName[addr]; } } In [35]: solidity.compile(c) --------------------------------------------------------------------------- IndexError Traceback (most recent call last) <ipython-input-35-7d9906629614> in <module>() ----> 1 solidity.compile(c) /home/work/Software/ethereum/pyethapp/.venv/local/lib/python2.7/site-packages/ethereum/_solidity.pyc in compile(cls, code, path, libraries, contract_name) 51 sorted_contracts[idx][1]['bin'] = sorted_contracts[idx][1]['bin'].replace( 52 "__{}{}".format(lib_name, "_" * (38 - len(lib_name))), lib_address) ---> 53 return sorted_contracts[idx][1]['bin'].decode('hex') 54 55 @classmethod IndexError: list index out of range

I get that there is an argument missing to the 'compile' call, but which one? What's the class that I should provide?