diff --git a/fastapi/dependencies/models.py b/fastapi/dependencies/models.py
index da5d9b72d..748fe4a9e 100644
--- a/fastapi/dependencies/models.py
+++ b/fastapi/dependencies/models.py
@@ -1,13 +1,7 @@
-from typing import Any, Callable, Dict, List, Sequence, Tuple
+from typing import Callable, List, Sequence
 
 from fastapi.security.base import SecurityBase
-from pydantic import BaseConfig, Schema
-from pydantic.error_wrappers import ErrorWrapper
-from pydantic.errors import MissingError
-from pydantic.fields import Field, Required
-from pydantic.schema import get_annotation_from_schema
-from starlette.concurrency import run_in_threadpool
-from starlette.requests import Request
+from pydantic.fields import Field
 
 param_supported_types = (str, int, float, bool)
 
diff --git a/fastapi/openapi/models.py b/fastapi/openapi/models.py
index 7cdee02a4..e3b13da71 100644
--- a/fastapi/openapi/models.py
+++ b/fastapi/openapi/models.py
@@ -6,7 +6,6 @@ from pydantic import BaseModel, Schema as PSchema
 from pydantic.types import UrlStr
 
 try:
-    import email_validator
     from pydantic.types import EmailStr  # type: ignore
 except ImportError:
     logging.warning(
diff --git a/fastapi/openapi/utils.py b/fastapi/openapi/utils.py
index 6f490a5d0..0f0a03624 100644
--- a/fastapi/openapi/utils.py
+++ b/fastapi/openapi/utils.py
@@ -11,8 +11,8 @@ from fastapi.utils import get_flat_models_from_routes, get_model_definitions
 from pydantic.fields import Field
 from pydantic.schema import Schema, field_schema, get_model_name_map
 from pydantic.utils import lenient_issubclass
-from starlette.responses import HTMLResponse, JSONResponse
-from starlette.routing import BaseRoute, Route
+from starlette.responses import JSONResponse
+from starlette.routing import BaseRoute
 from starlette.status import HTTP_422_UNPROCESSABLE_ENTITY
 
 validation_error_definition = {
diff --git a/scripts/lint.sh b/scripts/lint.sh
index 8f71ee4a6..90a3df995 100644
--- a/scripts/lint.sh
+++ b/scripts/lint.sh
@@ -1,5 +1,6 @@
 #!/bin/sh -e
 set -x
 
-black fastapi tests
-isort --multi-line=3 --trailing-comma --force-grid-wrap=0 --combine-as --line-width 88 --recursive --apply fastapi tests
+autoflake --remove-all-unused-imports --recursive --remove-unused-variables --in-place docs/tutorial/src/ fastapi tests --exclude=__init__.py
+black fastapi tests docs/tutorial/src
+isort --multi-line=3 --trailing-comma --force-grid-wrap=0 --combine-as --line-width 88 --recursive --apply fastapi tests docs/tutorial/src
diff --git a/tests/main.py b/tests/main.py
index 23f06dff3..468f4c764 100644
--- a/tests/main.py
+++ b/tests/main.py
@@ -1,6 +1,3 @@
-from typing import Optional
-
-import fastapi
 from fastapi import (
     Body,
     Cookie,
@@ -20,10 +17,8 @@ from fastapi.security import (
     OAuth2PasswordRequestForm,
 )
 from pydantic import BaseModel
-from starlette.exceptions import HTTPException
 from starlette.responses import HTMLResponse, JSONResponse, PlainTextResponse
 from starlette.status import HTTP_202_ACCEPTED
-from starlette.testclient import TestClient
 
 from .endpoints.a import router as router_a
 from .endpoints.b import router as router_b
diff --git a/tests/test_security.py b/tests/test_security.py
index 25ec0c51f..672a8460f 100644
--- a/tests/test_security.py
+++ b/tests/test_security.py
@@ -1,4 +1,3 @@
-import pytest
 from starlette.testclient import TestClient
 
 from .main import app