Re-enable the typing github action

.github/workflows/tests.yaml

@@ -75,13 +75,12 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # tox: ['docs', 'typing']
-        tox: ['docs']  # disable typing tests until we have typed the project correctly
+        tox: ['docs', 'typing']
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
       - uses: actions/setup-python@39cd14951b08e74b54015e9e001cdefcf80e669f # v5.1.1
         with:
-          python-version: '3.x'
+          python-version: 3.11
           cache: pip
           cache-dependency-path: requirements*/*.txt
       - name: cache mypy

README.md

@@ -135,7 +135,6 @@ If you\'re using Homebrew on MacOS, you might need this:
     # install postgis and geos
     > brew install postgis
     > brew install geos
-    > export DYLD_LIBRARY_PATH=/opt/homebrew/opt/geos/lib/
 
     # set up postgresql user
     > createuser -s postgresql

flask_admin/_backwards.py

@@ -9,7 +9,7 @@
 import warnings
 
 try:
-    from wtforms.widgets import HTMLString as Markup
+    from wtforms.widgets import HTMLString as Markup  # type: ignore[attr-defined]
 except ImportError:
     # WTForms 2.3.0
     from markupsafe import Markup  # noqa: F401

flask_admin/_compat.py

@@ -10,13 +10,23 @@
     :copyright: (c) 2013 by Armin Ronacher.
     :license: BSD, see LICENSE for more details.
 """
+from typing import Callable
 
 text_type = str
 string_types = (str,)
 
-itervalues = lambda d: iter(d.values())
-iteritems = lambda d: iter(d.items())
-filter_list = lambda f, l: list(filter(f, l))
+
+def itervalues(d: dict):
+    return iter(d.values())
+
+
+def iteritems(d: dict):
+    return iter(d.items())
+
+
+def filter_list(f: Callable, l: list):
+    return list(filter(f, l))
+
 
 def as_unicode(s):
     if isinstance(s, bytes):
@@ -29,29 +39,8 @@ def csv_encode(s):
     return as_unicode(s)
 
 
-def with_metaclass(meta, *bases):
-    # This requires a bit of explanation: the basic idea is to make a
-    # dummy metaclass for one level of class instantiation that replaces
-    # itself with the actual metaclass.  Because of internal type checks
-    # we also need to make sure that we downgrade the custom metaclass
-    # for one level to something closer to type (that's why __call__ and
-    # __init__ comes back from type etc.).
-    #
-    # This has the advantage over six.with_metaclass in that it does not
-    # introduce dummy classes into the final MRO.
-    class metaclass(meta):
-        __call__ = type.__call__
-        __init__ = type.__init__
-
-        def __new__(cls, name, this_bases, d):
-            if this_bases is None:
-                return type.__new__(cls, name, (), d)
-            return meta(name, bases, d)
-    return metaclass('temporary_class', None, {})
-
-
 try:
     # jinja2 3.0.0
-    from jinja2 import pass_context
+    from jinja2 import pass_context  # type: ignore[attr-defined]
 except ImportError:
     from jinja2 import contextfunction as pass_context

flask_admin/_types.py

@@ -0,0 +1,6 @@
+from typing import Union, Sequence, Dict, Callable
+
+import sqlalchemy
+
+T_COLUMN_LIST = Sequence[Union[str, sqlalchemy.Column]]
+T_FORMATTERS = Dict[type, Callable]  # todo: Make this tighter

flask_admin/babel.py

@@ -49,7 +49,7 @@ def get_translations_path(self, ctx):
 
     wtforms_domain = Domain(messages_path(), domain='wtforms')
 
-    class Translations(object):
+    class Translations(object):  # type: ignore[no-redef]
         ''' Fixes WTForms translation support and uses wtforms translations '''
         def gettext(self, string):
             t = wtforms_domain.get_translations()

flask_admin/base.py

@@ -5,7 +5,7 @@
 
 from flask import Blueprint, current_app, render_template, abort, g, url_for
 from flask_admin import babel
-from flask_admin._compat import with_metaclass, as_unicode
+from flask_admin._compat import as_unicode
 from flask_admin import helpers as h
 
 # For compatibility reasons import MenuLink
@@ -106,7 +106,7 @@ class BaseViewClass(object):
     pass
 
 
-class BaseView(with_metaclass(AdminViewMeta, BaseViewClass)):
+class BaseView(BaseViewClass, metaclass=AdminViewMeta):
     """
         Base administrative view.
 

flask_admin/contrib/fileadmin/__init__.py

@@ -176,7 +176,7 @@ class MyAdmin(FileAdmin):
                 allowed_extensions = ('swf', 'jpg', 'gif', 'png')
     """
 
-    editable_extensions = tuple()
+    editable_extensions: tuple = tuple()
     """
         List of editable extensions, in lower case.
 

flask_admin/contrib/fileadmin/s3.py

@@ -1,4 +1,8 @@
 import time
+from types import ModuleType
+from typing import Optional
+
+s3: Optional[ModuleType]
 
 try:
     from boto import s3

flask_admin/contrib/geoa/typefmt.py

@@ -33,4 +33,4 @@ def geom_formatter(view, value):
 
 
 DEFAULT_FORMATTERS = BASE_FORMATTERS.copy()
-DEFAULT_FORMATTERS[WKBElement] = geom_formatter
+DEFAULT_FORMATTERS[WKBElement] = geom_formatter  # type: ignore[assignment]

flask_admin/contrib/mongoengine/fields.py

@@ -85,4 +85,4 @@ class MongoImageField(MongoFileField):
         GridFS image field.
     """
 
-    widget = widgets.MongoImageInput()
+    widget = widgets.MongoImageInput()  # type: ignore[assignment]

flask_admin/contrib/peewee/form.py

@@ -4,7 +4,7 @@
                     PrimaryKeyField, ForeignKeyField)
 
 try:
-    from peewee import BaseModel
+    from peewee import BaseModel  # type: ignore[attr-defined]
 except ImportError:
     from peewee import ModelBase as BaseModel
 

flask_admin/contrib/sqla/fields.py

@@ -193,7 +193,7 @@ class MyView(ModelView):
                 'languages': CheckboxListField,
             }
     """
-    widget = CheckboxListInput()
+    widget = CheckboxListInput()  # type: ignore[assignment]
 
 
 class HstoreForm(BaseForm):

flask_admin/contrib/sqla/form.py

@@ -780,7 +780,7 @@ def contribute(self, model, form_class, inline_model):
 
 
 class InlineOneToOneModelConverter(InlineModelConverter):
-    inline_field_list_type = InlineModelOneToOneField
+    inline_field_list_type = InlineModelOneToOneField  # type: ignore[assignment]
 
     def _calculate_mapping_key_pair(self, model, info):
 

flask_admin/contrib/sqla/tools.py

@@ -6,15 +6,15 @@
     from sqlalchemy.orm.clsregistry import _class_resolver
 except ImportError:
     # If 1.4/2.0 module import fails, fall back to <1.3.x architecture.
-    from sqlalchemy.ext.declarative.clsregistry import _class_resolver
+    from sqlalchemy.ext.declarative.clsregistry import _class_resolver  # type: ignore[no-redef]
 from sqlalchemy.ext.hybrid import hybrid_property
 try:
     # Attempt ASSOCATION_PROXY import from pre-2.0 release
     from sqlalchemy.ext.associationproxy import ASSOCIATION_PROXY
 except ImportError:
-    from sqlalchemy.ext.associationproxy import AssociationProxyExtensionType
+    from sqlalchemy.ext.associationproxy import AssociationProxyExtensionType  # type: ignore[attr-defined]
     ASSOCIATION_PROXY = AssociationProxyExtensionType.ASSOCIATION_PROXY
-from sqlalchemy.sql.operators import eq
+from sqlalchemy.sql.operators import eq  # type: ignore[attr-defined]
 from sqlalchemy.exc import DBAPIError
 from sqlalchemy.orm.attributes import InstrumentedAttribute
 

flask_admin/contrib/sqla/typefmt.py

@@ -47,13 +47,13 @@ def arrow_export_formatter(view, arrow_time):
 })
 try:
     from sqlalchemy_utils import Choice
-    DEFAULT_FORMATTERS[Choice] = choice_formatter
+    DEFAULT_FORMATTERS[Choice] = choice_formatter  # type: ignore[assignment]
 except ImportError:
     pass
 
 try:
     from arrow import Arrow
-    DEFAULT_FORMATTERS[Arrow] = arrow_formatter
-    EXPORT_FORMATTERS[Arrow] = arrow_export_formatter
+    DEFAULT_FORMATTERS[Arrow] = arrow_formatter  # type: ignore[assignment]
+    EXPORT_FORMATTERS[Arrow] = arrow_export_formatter  # type: ignore[assignment]
 except ImportError:
     pass

flask_admin/contrib/sqla/view.py

@@ -1,6 +1,7 @@
 import logging
 import warnings
 import inspect
+from typing import Optional, Dict, List, Tuple, cast as t_cast
 
 from sqlalchemy.orm.attributes import InstrumentedAttribute
 from sqlalchemy.orm.base import manager_of_class, instance_state
@@ -72,16 +73,19 @@ class PostAdmin(ModelView):
         Please refer to the `subqueryload` on list of possible values.
     """
 
-    column_display_all_relations = ObsoleteAttr('column_display_all_relations',
-                                                'list_display_all_relations',
-                                                False)
+    column_display_all_relations = ObsoleteAttr(
+        'column_display_all_relations',
+        'list_display_all_relations',
+        False
+    )
     """
         Controls if list view should display all relations, not only many-to-one.
     """
 
-    column_searchable_list = ObsoleteAttr('column_searchable_list',
-                                          'searchable_columns',
-                                          None)
+    column_searchable_list = t_cast(
+        None,
+        ObsoleteAttr('column_searchable_list', 'searchable_columns', None),
+    )
     """
         Collection of the searchable columns.
 
@@ -264,9 +268,9 @@ class MyModelView(ModelView):
                 inline_models = (MyInlineModelForm(MyInlineModel),)
     """
 
-    column_type_formatters = DEFAULT_FORMATTERS
+    column_type_formatters = DEFAULT_FORMATTERS  # type: ignore[assignment]
 
-    form_choices = None
+    form_choices: Optional[Dict[str, List[Tuple[str, str]]]] = None
     """
         Map choices to form fields
 

flask_admin/contrib/sqla/widgets.py

@@ -1,4 +1,4 @@
-from wtforms.widgets.core import escape
+from wtforms.widgets.core import escape  # type: ignore[attr-defined]
 
 from flask_admin._backwards import Markup
 

flask_admin/form/upload.py

@@ -1,11 +1,13 @@
 import os
 import os.path as op
+from types import ModuleType
+from typing import Optional
 from urllib.parse import urljoin
 
 from werkzeug.utils import secure_filename
 from werkzeug.datastructures import FileStorage
 
-from wtforms import ValidationError, fields, __version__ as wtforms_version
+from wtforms import ValidationError, fields, __version__ as wtforms_version  # type: ignore[attr-defined]
 from wtforms.utils import unset_value
 from wtforms.widgets import html_params
 
@@ -15,6 +17,9 @@
 from flask_admin._backwards import Markup
 from flask_admin._compat import string_types
 
+Image: Optional[ModuleType]
+ImageOps: Optional[ModuleType]
+
 
 try:
     from PIL import Image, ImageOps
@@ -299,7 +304,7 @@ class ImageUploadField(FileUploadField):
 
         Requires PIL (or Pillow) to be installed.
     """
-    widget = ImageUploadInput()
+    widget = ImageUploadInput()  # type: ignore[assignment]
 
     keep_image_formats = ('PNG',)
     """