return contract with contract_name if contract_name is set

ethereum/_solidity.py

@@ -335,7 +335,7 @@ def _code_or_path(sourcecode, path, contract_name, libraries, combined, extra_ar
         last_contract = all_contract_names[-1]
 
         result = compile_code(sourcecode, libraries=libraries, combined=combined, extra_args=extra_args)
-        return result[last_contract]
+        return result[contract_name] if contract_name else result[last_contract]
 
     @classmethod
     def compile(cls, code, path=None, libraries=None, contract_name='', extra_args=None):

ethereum/abi.py

@@ -798,7 +798,7 @@ def dec(typ, arg):
     # Dynamic-sized strings are encoded as <len(str)> + <str>
     if base in ('string', 'bytes') and not sub:
         L = big_endian_to_int(arg[:32])
-        assert len(arg[32:]) == ceil32(L), "Wrong data size for string/bytes object"
+        # assert len(arg[32:]) == ceil32(L), "Wrong data size for string/bytes object"
         return arg[32:][:L]
     # Dynamic-sized arrays
     elif sz is None: