type hints

suby/errors.py

@@ -1,2 +1,7 @@
+from suby.subprocess_result import SubprocessResult
+
+
 class RunningCommandError(Exception):
-    pass
+    def __init__(self, message: str, subprocess_result: SubprocessResult) -> None:
+        self.result = subprocess_result
+        super().__init__(self, message)

suby/proxy_module.py

@@ -1,6 +1,5 @@
 import sys
 from time import sleep
-from dataclasses import dataclass, field
 from threading import Thread, Lock
 from subprocess import Popen, PIPE
 from typing import List, Callable, Union, Optional, Any
@@ -10,14 +9,7 @@
 from cantok import AbstractToken, SimpleToken, TimeoutToken, CancellationError
 
 from suby.errors import RunningCommandError
-
-
-@dataclass
-class SubprocessResult:
-    stdout: Optional[str] = None
-    stderr: Optional[str] = None
-    returncode: Optional[int] = None
-    killed_by_token: bool = False
+from suby.subprocess_result import SubprocessResult
 
 
 class ProxyModule(sys.modules[__name__].__class__):  # type: ignore[misc]
@@ -66,8 +58,7 @@ def __call__(self, *arguments: str, catch_output: bool = False, logger: LoggerPr
             else:
                 message = f'Error when executing the command "{arguments_string_representation}".'
                 logger.error(message)
-                exception = RunningCommandError(message)
-                exception.result = result
+                exception = RunningCommandError(message, result)
                 raise exception
 
         else:

suby/subprocess_result.py

@@ -0,0 +1,10 @@
+from dataclasses import dataclass
+from typing import Optional
+
+
+@dataclass
+class SubprocessResult:
+    stdout: Optional[str] = None
+    stderr: Optional[str] = None
+    returncode: Optional[int] = None
+    killed_by_token: bool = False