diff --git a/nateman/__init__.py b/nateman/__init__.py
index 1652020..8b18b52 100644
--- a/nateman/__init__.py
+++ b/nateman/__init__.py
@@ -26,9 +26,8 @@ import sys
 from datetime import datetime
 
 import sqlalchemy
-from flask import abort, Flask, request, send_from_directory
+from flask import Flask
 from flask.logging import default_handler
-from werkzeug.utils import find_modules, import_string
 
 from . import util
 from .config_manager import config_file_exists, create_config_file, config
diff --git a/nateman/blueprints/fileio.py b/nateman/blueprints/fileio.py
index a43cd7a..14cb4f2 100644
--- a/nateman/blueprints/fileio.py
+++ b/nateman/blueprints/fileio.py
@@ -21,10 +21,10 @@ Export- und Import-Blueprint
 import os
 import tempfile
 from datetime import datetime
+from pyexpat import ExpatError
 
 from flask import abort, Blueprint, current_app, g, redirect, url_for, flash, request, render_template
 from openpyxl.utils.exceptions import InvalidFileException
-from pyexpat import ExpatError
 
 from .auth import beratungslehrer_required, admin_required
 from .. import exporter, util
diff --git a/nateman/blueprints/klausuren.py b/nateman/blueprints/klausuren.py
index e4fa101..4b2a881 100644
--- a/nateman/blueprints/klausuren.py
+++ b/nateman/blueprints/klausuren.py
@@ -25,8 +25,7 @@ from flask import Blueprint, abort, current_app, flash, g, redirect, render_temp
 
 from .auth import login_required, beratungslehrer_required
 from ..config_manager import config
-from ..models import Klausur, Klausurteilnahme, Lehrer, Schueler, db, \
-    get_next_new_schueler_id, Stufe
+from ..models import Klausur, Klausurteilnahme, Lehrer, Schueler, db, get_next_new_schueler_id, Stufe
 
 bp = Blueprint("klausuren", __name__, url_prefix="/klausuren")
 
diff --git a/nateman/commands.py b/nateman/commands.py
index 852a9e1..99de468 100644
--- a/nateman/commands.py
+++ b/nateman/commands.py
@@ -22,11 +22,9 @@ Enthält Befehle zur Verwendung im Terminal (Command Line Interface).
 import click
 from flask.cli import with_appcontext
 
-from nateman.exporter import excelexport
-from nateman.importer import excelimport, KoopSchuelerImportError
-from . import emails, util, assigner
-from .models import Lehrer, Stufe, db, Session
+from . import emails, util
 from .config_manager import config
+from .models import Lehrer, Stufe, db, Session
 
 
 @click.group()
diff --git a/nateman/models.py b/nateman/models.py
index 7b8ab74..9da4170 100644
--- a/nateman/models.py
+++ b/nateman/models.py
@@ -29,7 +29,6 @@ from sqlalchemy.engine import Engine
 from sqlalchemy.sql import func
 
 from . import util
-from .config_manager import config
 
 db: SQLAlchemy = SQLAlchemy()
 
diff --git a/nateman/util.py b/nateman/util.py
index 4448258..0baed27 100644
--- a/nateman/util.py
+++ b/nateman/util.py
@@ -22,8 +22,6 @@ Enthält nützliche, von NateMan unabhängige Funktionen.
 import random
 import re
 
-from datetime import date
-
 EMAIL_ADDRESS_REGEX = re.compile(r"^[a-zA-Z0-9!#$%&‘*+–/=?^_`{|}~](\.?[a-zA-Z0-9!#$%&‘*+–/=?^_`{|}~])*"
                                  r"@[a-zA-Z0-9-](\.?[a-zA-Z0-9-])*$")