fix final_answer issue in e2b_executor (#319)

src/smolagents/e2b_executor.py

@@ -14,6 +14,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+import re
 import base64
 import pickle
 import textwrap
@@ -45,6 +46,8 @@ class E2BExecutor:
             )
 
         self.custom_tools = {}
+        self.final_answer = False
+        self.final_answer_pattern = re.compile(r'^final_answer\((.*)\)$')
         self.sbx = Sandbox()  # "qywp2ctmu2q7jzprcf4j")
         # TODO: validate installing agents package or not
         # print("Installing agents package on remote executor...")
@@ -85,6 +88,8 @@ class E2BExecutor:
         self.logger.log(tool_definition_execution.logs)
 
     def run_code_raise_errors(self, code: str):
+        if self.final_answer_pattern.match(code):
+            self.final_answer = True
         execution = self.sbx.run_code(
             code,
         )
@@ -122,7 +127,7 @@ locals().update({key: value for key, value in pickle_dict.items()})
         execution = self.run_code_raise_errors(code_action)
         execution_logs = "\n".join([str(log) for log in execution.logs.stdout])
         if not execution.results:
-            return None, execution_logs
+            return None, execution_logs, self.final_answer
         else:
             for result in execution.results:
                 if result.is_main_result:
@@ -144,7 +149,7 @@ locals().update({key: value for key, value in pickle_dict.items()})
                         "text",
                     ]:
                         if getattr(result, attribute_name) is not None:
-                            return getattr(result, attribute_name), execution_logs
+                            return getattr(result, attribute_name), execution_logs, self.final_answer
             raise ValueError("No main result returned by executor!")
 
 

src/smolagents/tool_validation.py

@@ -25,6 +25,9 @@ class MethodChecker(ast.NodeVisitor):
         self.class_attributes = class_attributes
         self.errors = []
         self.check_imports = check_imports
+        self.typing_names = {
+            'Any'
+        }
 
     def visit_arguments(self, node):
         """Collect function arguments"""
@@ -97,6 +100,7 @@ class MethodChecker(ast.NodeVisitor):
                 or node.id in self.imports
                 or node.id in self.from_imports
                 or node.id in self.assigned_names
+                or node.id in self.typing_names
             ):
                 self.errors.append(f"Name '{node.id}' is undefined.")