diff --git a/g4f/Provider/AItianhu.py b/g4f/Provider/AItianhu.py
index 0a31e40b..fcf9a4fb 100644
--- a/g4f/Provider/AItianhu.py
+++ b/g4f/Provider/AItianhu.py
@@ -71,12 +71,11 @@ class AItianhu(AsyncGeneratorProvider):
 
                     if "detail" not in line:
                         raise RuntimeError(f"Response: {line}")
-                    if content := line["detail"]["choices"][0]["delta"].get(
-                        "content"
-                    ):
+                    
+                    content = line["detail"]["choices"][0]["delta"].get("content")
+                    if content:
                         yield content
 
-
     @classmethod
     @property
     def params(cls):
diff --git a/g4f/Provider/GptForLove.py b/g4f/Provider/GptForLove.py
index e4787e5d..90e2096c 100644
--- a/g4f/Provider/GptForLove.py
+++ b/g4f/Provider/GptForLove.py
@@ -55,9 +55,8 @@ class GptForLove(AsyncGeneratorProvider):
                     except:
                         raise RuntimeError(f"Broken line: {line}")
                     if "detail" in line:
-                        if content := line["detail"]["choices"][0]["delta"].get(
-                            "content"
-                        ):
+                        content = line["detail"]["choices"][0]["delta"].get("content")
+                        if content:
                             yield content
                     elif "10分钟内提问超过了5次" in line:
                         raise RuntimeError("Rate limit reached")
diff --git a/g4f/Provider/GptGo.py b/g4f/Provider/GptGo.py
index 6d477da0..ac3f7fe8 100644
--- a/g4f/Provider/GptGo.py
+++ b/g4f/Provider/GptGo.py
@@ -62,7 +62,9 @@ class GptGo(AsyncGeneratorProvider):
                         line = json.loads(line[len(start):-1])
                         if line["choices"][0]["finish_reason"] == "stop":
                             break
-                        if content := line["choices"][0]["delta"].get("content"):
+                        
+                        content = line["choices"][0]["delta"].get("content"):
+                        if content:
                             yield content
 
 
diff --git a/g4f/Provider/Ylokh.py b/g4f/Provider/Ylokh.py
index abf4d9c1..13692139 100644
--- a/g4f/Provider/Ylokh.py
+++ b/g4f/Provider/Ylokh.py
@@ -50,9 +50,8 @@ class Ylokh(AsyncGeneratorProvider):
                             if line.startswith("data: [DONE]"):
                                 break
                             line = json.loads(line[6:])
-                            if content := line["choices"][0]["delta"].get(
-                                "content"
-                            ):
+                            content = line["choices"][0]["delta"].get("content")
+                            if content:
                                 yield content
                 else:
                     chat = await response.json()
diff --git a/g4f/Provider/deprecated/Ails.py b/g4f/Provider/deprecated/Ails.py
index 93c63a69..5244fd75 100644
--- a/g4f/Provider/deprecated/Ails.py
+++ b/g4f/Provider/deprecated/Ails.py
@@ -69,7 +69,9 @@ class Ails(AsyncGeneratorProvider):
                     if line.startswith(start) and line != "data: [DONE]":
                         line = line[len(start):-1]
                         line = json.loads(line)
-                        if token := line["choices"][0]["delta"].get("content"):
+                        token = line["choices"][0]["delta"].get("content")
+                        
+                        if token:
                             if "ai.ls" in token or "ai.ci" in token:
                                 raise Exception(f"Response Error: {token}")
                             yield token