[chore] Minor cleanup

flaschengeist/models/__init__.py

@@ -14,8 +14,11 @@ class ModelSerializeMixin:
             return False
 
         import typing
-        if typing.get_origin(self.__class__.__annotations__[param]) is typing.Union and \
+
-                typing.get_args(self.__class__.__annotations__[param])[1] is None:
+        if (
+            typing.get_origin(self.__class__.__annotations__[param]) is typing.Union
+            and isinstance(typing.get_args(self.__class__.__annotations__[param])[1], type(None))
+        ):
             return getattr(self, param) is None
 
     def serialize(self):

flaschengeist/plugins/__init__.py

@@ -62,9 +62,11 @@ class Plugin:
             Value stored in database (native python)
         """
         try:
-            setting = _PluginSetting.query\
+            setting = (
-                .filter(_PluginSetting.plugin == self._plugin_name)\
+                _PluginSetting.query.filter(_PluginSetting.plugin == self._plugin_name)
-                .filter(_PluginSetting.name == name).one()
+                .filter(_PluginSetting.name == name)
+                .one()
+            )
             return setting.value
         except sqlalchemy.orm.exc.NoResultFound:
             if "default" in kwargs:
@@ -78,9 +80,11 @@ class Plugin:
             name: String identifying the setting
             value: Value to be stored
         """
-        setting = _PluginSetting.query \
+        setting = (
-            .filter(_PluginSetting.plugin == self._plugin_name) \
+            _PluginSetting.query.filter(_PluginSetting.plugin == self._plugin_name)
-            .filter(_PluginSetting.name == name).one_or_none()
+            .filter(_PluginSetting.name == name)
+            .one_or_none()
+        )
         if setting is not None:
             setting.value = value
         else:

flaschengeist/plugins/auth_plain/__init__.py

@@ -23,10 +23,12 @@ class AuthPlain(AuthPlugin):
             self.modify_user(admin, None, "admin")
             db.session.add(admin)
             db.session.commit()
-            logger.warning("New administrator user was added, please change the password or remove it before going into"
+            logger.warning(
+                "New administrator user was added, please change the password or remove it before going into"
                 "production mode. Initial credentials:\n"
                 "name: admin\n"
-                           "password: admin")
+                "password: admin"
+            )
 
     def login(self, user: User, password: str):
         if user.has_attribute("password"):

flaschengeist/utils/datetime.py

@@ -1,7 +1,10 @@
 import datetime
-from backports.datetime_fromisoformat import MonkeyPatch
+import sys
 
-MonkeyPatch.patch_fromisoformat()
+if sys.version_info < (3, 7):
+    from backports.datetime_fromisoformat import MonkeyPatch
+
+    MonkeyPatch.patch_fromisoformat()
 
 
 def from_iso_format(date_str):

setup.py

@@ -10,7 +10,7 @@ setup(
     packages=find_packages(),
     package_data={"": ["*.toml"]},
     scripts=["run_flaschengeist"],
-    python_requires=">=3.6",
+    python_requires=">=3.7",
     install_requires=[
         "Flask >= 1.1",
         "toml",
@@ -19,8 +19,6 @@ setup(
         "flask_sqlalchemy",
         "flask_cors",
         "werkzeug",
-        # Needed for python < 3.7
-        "backports-datetime-fromisoformat",
     ],
     extras_require={"ldap": ["flask_ldapconn", "ldap3"], "test": ["pytest", "coverage"]},
     entry_points={