Update quick start examples (#120)

python/sglang/lang/interpreter.py

@@ -651,7 +651,7 @@ class ProgramState:
     def sync(self):
         return self.stream_executor.sync()
 
-    def text_iter(self, var_name=None):
+    def text_iter(self, var_name: Optional[str] = None):
         if self.stream_executor.stream:
             prev = 0
             if var_name is None:
@@ -682,7 +682,9 @@ class ProgramState:
             else:
                 yield self.get_var(name)
 
-    async def text_async_iter(self, var_name=None, return_meta_data=False):
+    async def text_async_iter(
+        self, var_name: Optional[str] = None, return_meta_data: bool = False
+    ):
         loop = asyncio.get_running_loop()
 
         if self.stream_executor.stream:

python/sglang/lang/ir.py

@@ -74,7 +74,9 @@ class SglSamplingParams:
             )
         return {
             "max_tokens_to_sample": self.max_new_tokens,
-            "stop_sequences": self.stop,
+            "stop_sequences": self.stop
+            if isinstance(self.stop, (list, tuple))
+            else [self.stop],
             "temperature": self.temperature,
             "top_p": self.top_p,
             "top_k": self.top_k,