feat: add support for 2.0 experimental advanced model

ref #55

README.md

@@ -265,6 +265,7 @@ Currently available models (as of Dec 21, 2024):
 - `unspecified` - Default model (Gemini 1.5 Flash)
 - `gemini-1.5-flash` - Gemini 1.5 Flash
 - `gemini-2.0-flash-exp` - Gemini 2.0 Flash Experimental
+- `gemini-2.0-exp-advanced` - Gemini 2.0 Experimental Advanced (requires Gemini Advanced account)
 
 ```python
 from gemini_webapi.constants import Model

src/gemini_webapi/constants.py

@@ -24,19 +24,27 @@ class Headers(Enum):
 
 
 class Model(Enum):
-    UNSPECIFIED = ("unspecified", {})
+    UNSPECIFIED = ("unspecified", {}, False)
     G_1_5_FLASH = (
         "gemini-1.5-flash",
         {"x-goog-ext-525001261-jspb": '[null,null,null,null,"7daceb7ef88130f5"]'},
+        False,
     )
     G_2_0_FLASH_EXP = (
         "gemini-2.0-flash-exp",
         {"x-goog-ext-525001261-jspb": '[null,null,null,null,"948b866104ccf484"]'},
+        False,
+    )
+    G_2_0_EXP_ADVANCED = (
+        "gemini-2.0-exp-advanced",
+        {"x-goog-ext-525001261-jspb": '[null,null,null,null,"b1e46a6037e6aa9f"]'},
+        True,
     )
 
-    def __init__(self, name, header):
+    def __init__(self, name, header, advanced_only):
         self.model_name = name
         self.model_header = header
+        self.advanced_only = advanced_only
 
     @classmethod
     def from_name(cls, name: str):

tests/test_client_features.py

@@ -31,6 +31,10 @@ async def test_successful_request(self):
     @logger.catch(reraise=True)
     async def test_switch_model(self):
         for model in Model:
+            if model.advanced_only:
+                logger.debug(f"Model {model.model_name} requires an advanced account")
+                continue
+
             response = await self.geminiclient.generate_content(
                 "What's you language model version? Reply version number only.",
                 model=model,