diff --git a/src/transformers/agents/agents.py b/src/transformers/agents/agents.py
index 446aa4f2508e..73b7186d25a3 100644
--- a/src/transformers/agents/agents.py
+++ b/src/transformers/agents/agents.py
@@ -22,7 +22,7 @@
 from .. import is_torch_available
 from ..utils import logging as transformers_logging
 from ..utils.import_utils import is_pygments_available
-from .agent_types import AgentAudio, AgentImage, AgentText
+from .agent_types import AgentAudio, AgentImage
 from .default_tools import BASE_PYTHON_TOOLS, FinalAnswerTool, setup_default_tools
 from .llm_engine import HfApiEngine, MessageRole
 from .prompts import (
diff --git a/src/transformers/agents/default_tools.py b/src/transformers/agents/default_tools.py
index 10097fa86743..3946aa9f8735 100644
--- a/src/transformers/agents/default_tools.py
+++ b/src/transformers/agents/default_tools.py
@@ -25,7 +25,7 @@
 
 from ..utils import is_offline_mode
 from .python_interpreter import LIST_SAFE_MODULES, evaluate_python_code
-from .tools import TOOL_CONFIG_FILE, TOOL_MAPPING, Tool, tool
+from .tools import TOOL_CONFIG_FILE, TOOL_MAPPING, Tool
 
 
 def custom_print(*args):
diff --git a/src/transformers/agents/prompts.py b/src/transformers/agents/prompts.py
index 266d0d78796f..7a84b1db44fa 100644
--- a/src/transformers/agents/prompts.py
+++ b/src/transformers/agents/prompts.py
@@ -199,7 +199,7 @@ def download_prompt(prompt_or_repo_id, agent_name, mode="run"):
 Action:
 {
   "action": "image_generator",
-  "action_input": {"prompt": ""A portrait of John Doe, a 55-year-old man living in Canada.""}
+  "action_input": {"prompt": "A portrait of John Doe, a 55-year-old man living in Canada."}
 }<end_action>
 Observation: "image.png"
 
diff --git a/src/transformers/agents/search.py b/src/transformers/agents/search.py
index 4889de084711..f50a7c6ab8f9 100644
--- a/src/transformers/agents/search.py
+++ b/src/transformers/agents/search.py
@@ -19,7 +19,7 @@
 import requests
 from requests.exceptions import RequestException
 
-from .tools import Tool, tool
+from .tools import Tool
 
 
 class DuckDuckGoSearchTool(Tool):
@@ -50,7 +50,7 @@ class VisitWebpageTool(Tool):
         }
     }
     output_type = "string"
-    
+
     def forward(self, url: str) -> str:
         try:
             from markdownify import markdownify
diff --git a/src/transformers/utils/chat_template_utils.py b/src/transformers/utils/chat_template_utils.py
index 1ca8e59d926d..74912ce30146 100644
--- a/src/transformers/utils/chat_template_utils.py
+++ b/src/transformers/utils/chat_template_utils.py
@@ -22,7 +22,7 @@
 
 from packaging import version
 
-from .import_utils import is_jinja_available, is_vision_available, is_torch_available
+from .import_utils import is_jinja_available, is_torch_available, is_vision_available
 
 
 if is_jinja_available():
@@ -69,6 +69,7 @@ class DocstringParsingException(Exception):
 
     pass
 
+
 def _get_json_schema_type(param_type: str) -> Dict[str, str]:
     type_mapping = {
         int: {"type": "integer"},
diff --git a/tests/agents/test_final_answer.py b/tests/agents/test_final_answer.py
index 3bd7c0f124fc..ee744bbd7bd3 100644
--- a/tests/agents/test_final_answer.py
+++ b/tests/agents/test_final_answer.py
@@ -19,11 +19,12 @@
 import numpy as np
 from PIL import Image
 
-from transformers import is_torch_available, load_tool
+from transformers import is_torch_available
 from transformers.agents.agent_types import AGENT_TYPE_MAPPING
 from transformers.agents.default_tools import FinalAnswerTool
 from transformers.testing_utils import get_tests_dir, require_torch
 
+
 if is_torch_available():
     import torch
 
diff --git a/tests/agents/test_python_interpreter.py b/tests/agents/test_python_interpreter.py
index 71dcbe3b641c..15e5ad7bb3a3 100644
--- a/tests/agents/test_python_interpreter.py
+++ b/tests/agents/test_python_interpreter.py
@@ -392,7 +392,7 @@ def test_if_conditions(self):
 if char.isalpha():
     print('2')"""
         state = {}
-        result = evaluate_python_code(code, BASE_PYTHON_TOOLS, state=state)
+        evaluate_python_code(code, BASE_PYTHON_TOOLS, state=state)
         assert state["print_outputs"] == "2\n"
 
     def test_imports(self):
@@ -470,7 +470,7 @@ def test_print_output(self):
         code = "print('Hello world!')\nprint('Ok no one cares')"
         state = {}
         result = evaluate_python_code(code, BASE_PYTHON_TOOLS, state=state)
-        assert result == None
+        assert result is None
         assert state["print_outputs"] == "Hello world!\nOk no one cares\n"
 
         # test print in function
@@ -594,7 +594,7 @@ def method_that_raises(self):
     def test_print(self):
         code = "print(min([1, 2, 3]))"
         state = {}
-        result = evaluate_python_code(code, {"min": min, "print": print}, state=state)
+        evaluate_python_code(code, {"min": min, "print": print}, state=state)
         assert state["print_outputs"] == "1\n"
 
     def test_types_as_objects(self):
diff --git a/tests/agents/test_tools_common.py b/tests/agents/test_tools_common.py
index 521783a7b6c9..47770669c3eb 100644
--- a/tests/agents/test_tools_common.py
+++ b/tests/agents/test_tools_common.py
@@ -31,7 +31,7 @@
     from PIL import Image
 
 
-AUTHORIZED_TYPES = ["string", "number", "audio", "image", "any"]
+AUTHORIZED_TYPES = ["string", "boolean", "integer", "number", "audio", "image", "any"]
 
 
 def create_inputs(tool_inputs: Dict[str, Dict[Union[str, type], str]]):