Make e2b optional dependency (#292)

* Make e2b optional dependency with extra

* Make e2b imports optional

* Update e2b docs

docs/source/en/tutorials/secure_code_execution.md

@@ -60,7 +60,7 @@ For maximum security, you can use our integration with E2B to run code in a sand
 
 For this, you will need to setup your E2B account and set your `E2B_API_KEY` in your environment variables. Head to [E2B's quickstart documentation](https://e2b.dev/docs/quickstart) for more information.
 
-Then you can install it with `pip install e2b-code-interpreter python-dotenv`.
+Then you can install it with `pip install "smolagents[e2b]"`.
 
 Now you're set!
 

pyproject.toml

@@ -20,8 +20,6 @@ dependencies = [
   "pillow>=11.0.0",
   "markdownify>=0.14.1",
   "duckduckgo-search>=6.3.7",
-  "python-dotenv>=1.0.1",
-  "e2b-code-interpreter>=1.0.3",
   "torchvision"
 ]
 
@@ -38,6 +36,10 @@ transformers = [
   "transformers>=4.0.0",
   "smolagents[torch]",
 ]
+e2b = [
+  "e2b-code-interpreter>=1.0.3",
+  "python-dotenv>=1.0.1",
+]
 gradio = [
   "gradio>=5.8.0",
 ]
@@ -55,10 +57,11 @@ quality = [
   "ruff>=0.9.0",
 ]
 all = [
-  "smolagents[accelerate,audio,gradio,litellm,mcp,openai,transformers]",
+  "smolagents[accelerate,audio,e2b,gradio,litellm,mcp,openai,transformers]",
 ]
 test = [
   "pytest>=8.1.0",
+  "python-dotenv>=1.0.1",  # For test_all_docs
   "smolagents[all]",
 ]
 dev = [

src/smolagents/e2b_executor.py

@@ -20,8 +20,6 @@ import textwrap
 from io import BytesIO
 from typing import Any, List, Tuple
 
-from dotenv import load_dotenv
-from e2b_code_interpreter import Sandbox
 from PIL import Image
 
 from .tool_validation import validate_tool_attributes
@@ -29,11 +27,23 @@ from .tools import Tool
 from .utils import BASE_BUILTIN_MODULES, instance_to_source
 
 
-load_dotenv()
+try:
+    from dotenv import load_dotenv
+
+    load_dotenv()
+except ModuleNotFoundError:
+    pass
 
 
 class E2BExecutor:
     def __init__(self, additional_imports: List[str], tools: List[Tool], logger):
+        try:
+            from e2b_code_interpreter import Sandbox
+        except ModuleNotFoundError:
+            raise ModuleNotFoundError(
+                """Please install 'e2b' extra to use E2BExecutor: `pip install "smolagents[e2b]"`"""
+            )
+
         self.custom_tools = {}
         self.sbx = Sandbox()  # "qywp2ctmu2q7jzprcf4j")
         # TODO: validate installing agents package or not