diff --git a/api/tests/test_skola_autocomplete.py b/api/tests/test_skola_autocomplete.py
index 36df97e8..f69669f0 100644
--- a/api/tests/test_skola_autocomplete.py
+++ b/api/tests/test_skola_autocomplete.py
@@ -1,7 +1,6 @@
 from django.test import TestCase, tag
 from django.urls import reverse
 import seminar.models as m
-import seminar.views as v
 from seminar.utils import sync_skoly
 
 @tag('stejny-model-na-produkci')
diff --git a/galerie/admin.py b/galerie/admin.py
index 2b270163..0f8e6a42 100644
--- a/galerie/admin.py
+++ b/galerie/admin.py
@@ -1,6 +1,5 @@
 from galerie.models import Obrazek, Galerie
 from django.contrib import admin
-from django.http import HttpResponseRedirect
 from django import forms
 from django.db import models
 
diff --git a/galerie/forms.py b/galerie/forms.py
index e27b53fb..3a9ee4f9 100644
--- a/galerie/forms.py
+++ b/galerie/forms.py
@@ -1,5 +1,5 @@
 from django import forms
-from seminar.models import Soustredeni
+
 
 class KomentarForm(forms.Form):
 	komentar = forms.CharField(label = "Komentář:", max_length = 300, required=False)
diff --git a/galerie/views.py b/galerie/views.py
index 872bb46e..41d6d47d 100644
--- a/galerie/views.py
+++ b/galerie/views.py
@@ -1,9 +1,5 @@
-import random
-
-from django.http import HttpResponse, Http404
+from django.http import Http404
 from django.shortcuts import render, HttpResponseRedirect, get_object_or_404
-from django.template import RequestContext
-from datetime import datetime
 
 from galerie.models import Obrazek, Galerie
 from seminar.models import Soustredeni
diff --git a/header_fotky/context_processors.py b/header_fotky/context_processors.py
index 7f73faa7..7b7fe6ae 100644
--- a/header_fotky/context_processors.py
+++ b/header_fotky/context_processors.py
@@ -3,7 +3,7 @@ Context processory lze přidat do djanga v :mod:`~mamweb.settings` a dělají to
 že do contextu (tj. to, z čeho se např. berou proměnné v templatech) libovolné
 stránky přidají další věci.
 """
-from datetime import datetime, date
+from datetime import datetime
 import random
 
 from django.conf import settings
diff --git a/korektury/views.py b/korektury/views.py
index ee6f2841..ea528e0a 100644
--- a/korektury/views.py
+++ b/korektury/views.py
@@ -8,9 +8,6 @@ from django.db.models import Count,Q
 from .models import Oprava,Komentar,KorekturovanePDF, Organizator
 from .forms import OpravaForm
 
-import subprocess
-import shutil
-import os
 
 class KorekturyListView(generic.ListView):
 	model = KorekturovanePDF
diff --git a/mamweb/settings_local.py b/mamweb/settings_local.py
index 4d98cd38..b45a5744 100644
--- a/mamweb/settings_local.py
+++ b/mamweb/settings_local.py
@@ -1,5 +1,3 @@
-import os.path
-
 #
 # Lokalni / vyvojove nastaveni settings.py
 #
@@ -10,6 +8,8 @@ import os.path
 # Import common settings
 from .settings_common import *
 
+import os.path
+
 MIDDLEWARE += (
 	'debug_toolbar.middleware.DebugToolbarMiddleware',
 	)
diff --git a/mamweb/settings_prod.py b/mamweb/settings_prod.py
index 4a3f2198..81f6bb79 100644
--- a/mamweb/settings_prod.py
+++ b/mamweb/settings_prod.py
@@ -1,5 +1,3 @@
-import os.path
-
 #
 # Produkcni nastaveni settings.py
 #
@@ -10,6 +8,8 @@ import os.path
 # Import common settings
 from .settings_common import *
 
+import os
+
 
 # See https://docs.djangoproject.com/en/1.7/howto/deployment/checklist/
 
@@ -45,8 +45,6 @@ DATABASES = {
 	},
 }
 
-import os
-
 SERVER_EMAIL = 'mamweb-prod-errors@mam.mff.cuni.cz'
 ADMINS = [('M&M ERRORs', 'mam-errors@mam.mff.cuni.cz')]
 
diff --git a/mamweb/settings_test.py b/mamweb/settings_test.py
index 71f166ed..e1be6131 100644
--- a/mamweb/settings_test.py
+++ b/mamweb/settings_test.py
@@ -1,5 +1,3 @@
-import os.path
-
 #
 # Testovaci nastaveni settings.py (testovani na atreyi)
 #
@@ -49,8 +47,6 @@ DATABASES = {
 	},
 }
 
-import os
-
 SERVER_EMAIL = 'mamweb-test-errors@mam.mff.cuni.cz'
 ADMINS = [
 	('M&M ERRORs', 'mam-errors@mam.mff.cuni.cz'),
diff --git a/mamweb/urls.py b/mamweb/urls.py
index 4b870fec..3bf929f1 100644
--- a/mamweb/urls.py
+++ b/mamweb/urls.py
@@ -7,9 +7,8 @@ from django.contrib import admin
 from django.conf import settings
 from django.views.generic.base import TemplateView
 from django import views
-from django.urls import path # As per docs.
 
-from treenode.routers import router
+# from treenode.routers import router
 
 urlpatterns = [
 
diff --git a/odevzdavatko/views.py b/odevzdavatko/views.py
index e5de47c2..d8f00f85 100644
--- a/odevzdavatko/views.py
+++ b/odevzdavatko/views.py
@@ -1,5 +1,4 @@
 from django.core.exceptions import PermissionDenied
-from django.views.generic import ListView, DetailView, FormView
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.core.mail import EmailMessage
 from django.utils import timezone
@@ -11,8 +10,6 @@ from django.urls import reverse
 from django.db import transaction
 from django.db.models import Q
 
-from dataclasses import dataclass
-import datetime
 from decimal import Decimal
 from itertools import groupby
 import logging
diff --git a/personalni/views.py b/personalni/views.py
index c2712b30..0670261e 100644
--- a/personalni/views.py
+++ b/personalni/views.py
@@ -1,7 +1,7 @@
 from django.shortcuts import render
 from django.urls import reverse
 from django.views import generic
-from django.db.models import Q, Count, Min
+from django.db.models import Q, Min
 from django.views.decorators.debug import sensitive_post_parameters
 from django.views.generic.base import TemplateView
 from django.contrib.auth.models import User, Permission, Group, AnonymousUser
diff --git a/prednasky/views.py b/prednasky/views.py
index 699b690d..e62f4d69 100644
--- a/prednasky/views.py
+++ b/prednasky/views.py
@@ -2,7 +2,6 @@ from django.shortcuts import render, get_object_or_404
 from django.views import generic
 from django.shortcuts import HttpResponseRedirect
 from django.core.exceptions import ObjectDoesNotExist
-from django.db.models import Sum
 from django.forms import Form
 
 from prednasky.models import Prednaska, Hlasovani, Seznam, STAV_NAVRH
diff --git a/seminar/admin.py b/seminar/admin.py
index f8768ddf..55195b75 100644
--- a/seminar/admin.py
+++ b/seminar/admin.py
@@ -3,7 +3,7 @@ from django.db import models
 from django.forms import widgets, ModelForm
 from django.core.exceptions import ValidationError
 
-from polymorphic.admin import PolymorphicParentModelAdmin, PolymorphicChildModelAdmin, PolymorphicChildModelFilter
+from polymorphic.admin import PolymorphicParentModelAdmin, PolymorphicChildModelAdmin
 from solo.admin import SingletonModelAdmin
 from django.utils.safestring import mark_safe
 
diff --git a/seminar/management/commands/load_org_permissions.py b/seminar/management/commands/load_org_permissions.py
index 6b4f9e0a..9211f900 100644
--- a/seminar/management/commands/load_org_permissions.py
+++ b/seminar/management/commands/load_org_permissions.py
@@ -1,5 +1,4 @@
 from django.core.management.base import BaseCommand
-from django.contrib.sessions.models import Session
 from django.contrib.auth.models import Group, Permission
 from django.contrib.contenttypes.models import ContentType
 from django.core.exceptions import ObjectDoesNotExist
diff --git a/seminar/management/commands/save_org_permissions.py b/seminar/management/commands/save_org_permissions.py
index 216f9e4b..7ecbc01c 100644
--- a/seminar/management/commands/save_org_permissions.py
+++ b/seminar/management/commands/save_org_permissions.py
@@ -1,6 +1,5 @@
 from django.core.management.base import BaseCommand
-from django.contrib.sessions.models import Session
-from django.contrib.auth.models import Group, Permission
+from django.contrib.auth.models import Group
 import json
 
 class Command(BaseCommand):
diff --git a/seminar/management/commands/testdata.py b/seminar/management/commands/testdata.py
index d9ce8cfb..8613a157 100644
--- a/seminar/management/commands/testdata.py
+++ b/seminar/management/commands/testdata.py
@@ -1,12 +1,10 @@
-import datetime
 import os
-import random
 
 from django.core.management.base import BaseCommand
 from django.core.management import call_command
 from django.conf import settings
 
-from seminar.models import Skola, Resitel, Rocnik, Cislo, Problem, Reseni, PrilohaReseni, Nastaveni
+from seminar.models import Skola, Resitel, Rocnik, Cislo, Problem, Reseni
 from seminar.testutils import create_test_data
 import django.contrib.auth
 User = django.contrib.auth.get_user_model()
diff --git a/seminar/models/pomocne.py b/seminar/models/pomocne.py
index ee71583f..f5327d4d 100644
--- a/seminar/models/pomocne.py
+++ b/seminar/models/pomocne.py
@@ -1,4 +1,3 @@
-import os
 from django.db import models
 
 from .base import SeminarModelBase
diff --git a/seminar/models/tvorba.py b/seminar/models/tvorba.py
index 36157c96..f988a089 100644
--- a/seminar/models/tvorba.py
+++ b/seminar/models/tvorba.py
@@ -10,15 +10,13 @@ from django.db import models
 from django.db.models import Q
 from django.template.loader import render_to_string
 from django.utils import timezone
-from django.conf import settings
 from django.urls import reverse
 from django.core.cache import cache
-from django.core.exceptions import ObjectDoesNotExist, ValidationError
+from django.core.exceptions import ObjectDoesNotExist
 from django.core.files.storage import FileSystemStorage
 from django.utils.text import get_valid_filename
 from django.utils.functional import cached_property
 
-from solo.models import SingletonModel
 from taggit.managers import TaggableManager
 
 from reversion import revisions as reversion
diff --git a/seminar/templatetags/utils.py b/seminar/templatetags/utils.py
index ca400050..c7b60173 100644
--- a/seminar/templatetags/utils.py
+++ b/seminar/templatetags/utils.py
@@ -1,7 +1,6 @@
 from django import template
 from django.utils.safestring import mark_safe
-from datetime import datetime, timedelta
-from mamweb.settings import TIME_ZONE
+from datetime import datetime
 import logging
 register = template.Library()
 
diff --git a/seminar/testutils.py b/seminar/testutils.py
index be7f3677..a282c214 100644
--- a/seminar/testutils.py
+++ b/seminar/testutils.py
@@ -10,7 +10,7 @@ import unidecode
 import logging
 
 from korektury.testutils import create_test_pdf
-from seminar.models import Skola, Resitel, Rocnik, Cislo, Deadline, Problem, Reseni, PrilohaReseni, Nastaveni, Soustredeni, Soustredeni_Ucastnici, Soustredeni_Organizatori, Osoba, Organizator, Prijemce, Tema, Uloha, Konfera, TextNode, UlohaVzorakNode, RocnikNode, CisloNode, TemaVCisleNode, Text, Hodnoceni, UlohaZadaniNode, Novinky, TreeNode
+from seminar.models import Skola, Resitel, Rocnik, Cislo, Deadline, Problem, Reseni, Nastaveni, Soustredeni, Soustredeni_Ucastnici, Soustredeni_Organizatori, Osoba, Organizator, Prijemce, Tema, Uloha, Konfera, TextNode, UlohaVzorakNode, RocnikNode, CisloNode, TemaVCisleNode, Text, Hodnoceni, UlohaZadaniNode, Novinky
 import seminar.models as m
 
 from django.contrib.flatpages.models import FlatPage
diff --git a/seminar/urls.py b/seminar/urls.py
index f740e6a4..e4280876 100644
--- a/seminar/urls.py
+++ b/seminar/urls.py
@@ -1,4 +1,4 @@
-from django.urls import path, include, re_path
+from django.urls import path
 from . import views
 from .utils import org_required
 
diff --git a/seminar/views/views_all.py b/seminar/views/views_all.py
index 2de84d30..0d8c7967 100644
--- a/seminar/views/views_all.py
+++ b/seminar/views/views_all.py
@@ -5,7 +5,7 @@ from django.core.exceptions import ObjectDoesNotExist
 from django.views import generic
 from django.utils.translation import gettext as _
 from django.http import Http404
-from django.db.models import Q, Sum, Count
+from django.db.models import Q
 from django.views.generic.base import RedirectView
 from django.core.exceptions import PermissionDenied
 from django.contrib.staticfiles.finders import find
@@ -17,24 +17,18 @@ from seminar.models import Problem, Cislo, Reseni, Nastaveni, Rocnik, \
 	Deadline  # Tohle je stare a chceme se toho zbavit. Pouzivejte s.ToCoChci
 #from .models import VysledkyZaCislo, VysledkyKCisluZaRocnik, VysledkyKCisluOdjakziva
 from seminar import utils
-from treenode import treelib
-import treenode.templatetags as tnltt
-import treenode.serializers as vr
 from vysledkovky.utils import body_resitelu, VysledkovkaCisla, \
 	VysledkovkaRocniku, VysledkovkaDoTeXu
 
-from datetime import date, datetime
 from django.utils import timezone
 from itertools import groupby
 from collections import OrderedDict
 import tempfile
 import subprocess
 import shutil
-import os
 import os.path as op
 from django.conf import settings
 import unicodedata
-import time
 from collections.abc import Sequence
 import http
 
diff --git a/soustredeni/views.py b/soustredeni/views.py
index f150b6b8..add79641 100644
--- a/soustredeni/views.py
+++ b/soustredeni/views.py
@@ -1,7 +1,6 @@
 from django.shortcuts import get_object_or_404, render
 from django.http import HttpResponse
 from django.views import generic
-from django.conf import settings
 from django.contrib.staticfiles.finders import find
 from seminar.models import Soustredeni, Resitel, Soustredeni_Ucastnici, Nastaveni # Tohle je stare a chceme se toho zbavit. Pouzivejte s.ToCoChci
 import csv
diff --git a/treenode/admin.py b/treenode/admin.py
index 92c85cd5..61b1f1e2 100644
--- a/treenode/admin.py
+++ b/treenode/admin.py
@@ -1,6 +1,6 @@
 from django.contrib import admin
 
-from polymorphic.admin import PolymorphicParentModelAdmin, PolymorphicChildModelAdmin, PolymorphicChildModelFilter
+from polymorphic.admin import PolymorphicParentModelAdmin, PolymorphicChildModelAdmin
 
 import seminar.models as m
 
diff --git a/treenode/viewsets.py b/treenode/viewsets.py
index 16dce6d6..66766492 100644
--- a/treenode/viewsets.py
+++ b/treenode/viewsets.py
@@ -1,8 +1,6 @@
-from rest_framework import viewsets,filters
-from rest_framework import status
-from rest_framework.response import Response
+from rest_framework import viewsets
 from django.core.exceptions import PermissionDenied
-from rest_framework.permissions import BasePermission, AllowAny
+from rest_framework.permissions import AllowAny
 from seminar import models as m
 import treenode.serializers as views
 
diff --git a/various/admin.py b/various/admin.py
deleted file mode 100644
index 694323fa..00000000
--- a/various/admin.py
+++ /dev/null
@@ -1 +0,0 @@
-from django.contrib import admin