fix naming issues raised by linting

Author: Carsons-Eels

src/ethereum_spec_tools/evm_tools/t8n/__init__.py

@@ -19,7 +19,7 @@
 from ..loaders.fixture_loader import Load
 from ..loaders.fork_loader import ForkLoad
 from ..utils import (
-    FatalException,
+    FatalError,
     get_module_name,
     get_stream_logger,
     parse_hex_or_int,
@@ -287,7 +287,7 @@ def run(self) -> int:
                 self.run_state_test()
             else:
                 self.run_blockchain_test()
-        except FatalException as e:
+        except FatalError as e:
             self.logger.error(str(e))
             return 1
 

src/ethereum_spec_tools/evm_tools/t8n/evm_trace.py

@@ -45,16 +45,16 @@ class Trace:
     pc: int
     op: Optional[Union[str, int]]
     gas: str
-    gasCost: str
+    gas_cost: str
     memory: Optional[str]
-    memSize: int
+    mem_size: int
     stack: Optional[List[str]]
-    returnData: Optional[str]
+    return_data: Optional[str]
     depth: int
     refund: int
-    opName: str
-    gasCostTraced: bool = False
-    errorTraced: bool = False
+    op_name: str
+    gas_cost_traced: bool = False
+    error_traced: bool = False
     precompile: bool = False
     error: Optional[str] = None
 
@@ -66,7 +66,7 @@ class FinalTrace:
     """
 
     output: str
-    gasUsed: str
+    gas_used: str
     error: Optional[str] = None
 
     def __init__(

src/ethereum_spec_tools/evm_tools/t8n/t8n_types.py

@@ -13,7 +13,7 @@
 from ethereum.utils.hexadecimal import hex_to_bytes, hex_to_u256, hex_to_uint
 
 from ..loaders.transaction_loader import TransactionLoad, UnsupportedTx
-from ..utils import FatalException, encode_to_hex, secp256k1_sign
+from ..utils import FatalError, encode_to_hex, secp256k1_sign
 
 if TYPE_CHECKING:
     from . import T8N
@@ -237,7 +237,7 @@ def sign_transaction(self, json_tx: Any) -> None:
             signing_hash = t8n.fork.signing_hash_7702(tx_decoded)
             v_addend = U256(0)
         else:
-            raise FatalException("Unknown transaction type")
+            raise FatalError("Unknown transaction type")
 
         r, s, y = secp256k1_sign(signing_hash, int(secret_key))
         json_tx["r"] = hex(r)

src/ethereum_spec_tools/evm_tools/utils.py

@@ -75,7 +75,7 @@ def parse_hex_or_int(value: str, to_type: Callable[[int], W]) -> W:
         return to_type(int(value))
 
 
-class FatalException(Exception):
+class FatalError(Exception):
     """Exception that causes the tool to stop"""
 
     pass