refactor: Several testing SDK improvements such as:

fix db reset, use latest wheel, print trace in case of failure and add logic to pull stateless contracts

testing/tycho-client/tycho_client/utils.py

@@ -11,6 +11,7 @@ import eth_abi
 from eth_typing import HexStr
 from hexbytes import HexBytes
 from protosim_py import SimulationEngine, AccountInfo
+import requests
 from web3 import Web3
 
 from .constants import EXTERNAL_ACCOUNT, MAX_BALANCE, ASSETS_FOLDER
@@ -299,3 +300,42 @@ def maybe_coerce_error(
             repr(pool_state),
         )
     return err
+
+
+def exec_rpc_method(url, method, params, timeout=240) -> dict:
+    payload = {"jsonrpc": "2.0", "method": method, "params": params, "id": 1}
+    headers = {"Content-Type": "application/json"}
+
+    r = requests.post(url, data=json.dumps(payload), headers=headers, timeout=timeout)
+
+    if r.status_code >= 400:
+        raise RuntimeError(
+            "RPC failed: status_code not ok. (method {}: {})".format(
+                method, r.status_code
+            )
+        )
+    data = r.json()
+
+    if "result" in data:
+        return data["result"]
+    elif "error" in data:
+        raise RuntimeError(
+            "RPC failed with Error {} - {}".format(data["error"], method)
+        )
+
+
+def get_code_for_address(address: str, connection_string: str = None):
+    if connection_string is None:
+        connection_string = os.getenv("RPC_URL")
+        if connection_string is None:
+            raise EnvironmentError("RPC_URL environment variable is not set")
+
+    method = "eth_getCode"
+    params = [address, "latest"]
+
+    try:
+        code = exec_rpc_method(connection_string, method, params)
+        return bytes.fromhex(code[2:])
+    except RuntimeError as e:
+        print(f"Error fetching code for address {address}: {e}")
+        return None