Remove None from RunCodeLanguage, use Optional in signatures

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: mishushakov

python/e2b_code_interpreter/code_interpreter_async.py

@@ -69,7 +69,7 @@ def _client(self) -> AsyncClient:
     async def run_code(
         self,
         code: str,
-        language: RunCodeLanguage = None,
+        language: Optional[RunCodeLanguage] = None,
         on_stdout: Optional[OutputHandlerWithAsync[OutputMessage]] = None,
         on_stderr: Optional[OutputHandlerWithAsync[OutputMessage]] = None,
         on_result: Optional[OutputHandlerWithAsync[Result]] = None,
@@ -203,7 +203,7 @@ async def run_code(
     async def create_code_context(
         self,
         cwd: Optional[str] = None,
-        language: RunCodeLanguage = None,
+        language: Optional[RunCodeLanguage] = None,
         request_timeout: Optional[float] = None,
     ) -> Context:
         """

python/e2b_code_interpreter/code_interpreter_sync.py

@@ -66,7 +66,7 @@ def _client(self) -> Client:
     def run_code(
         self,
         code: str,
-        language: RunCodeLanguage = None,
+        language: Optional[RunCodeLanguage] = None,
         on_stdout: Optional[OutputHandler[OutputMessage]] = None,
         on_stderr: Optional[OutputHandler[OutputMessage]] = None,
         on_result: Optional[OutputHandler[Result]] = None,
@@ -199,7 +199,7 @@ def run_code(
     def create_code_context(
         self,
         cwd: Optional[str] = None,
-        language: RunCodeLanguage = None,
+        language: Optional[RunCodeLanguage] = None,
         request_timeout: Optional[float] = None,
     ) -> Context:
         """

python/e2b_code_interpreter/models.py

@@ -24,7 +24,6 @@
 RunCodeLanguage = Union[
     Literal["python", "javascript", "typescript", "r", "java", "bash"],
     str,
-    None,
 ]
 
 T = TypeVar("T")