diff --git a/pyproject.toml b/pyproject.toml
index 61b43cf..42fa167 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -95,18 +95,25 @@ select = [
     "TCH"
 
 ]
-ignore = ["D100", "D103", "T201", "D104"]
+ignore = ["D100", "D103", "T201", "D104", "COM819", "D212"]
 
 fixable = ["ALL"]
 unfixable = []
 
 [tool.ruff.format]
-quote-style = "double"
 indent-style = "space"
 skip-magic-trailing-comma = false
 line-ending = "auto"
 docstring-code-format = false
 
+[tool.ruff.lint."flake8-quotes"]
+inline-quotes = "single"
+
+[tool.ruff.lint.per-file-ignores]
+"__init__.py" = ["F401"]
+"settings*" = ["E501", "F405"]
+
 [tool.ruff.lint.per-file-ignores]
 "__init__.py" = ["F401"]
 "settings*" = ["E501", "F405"]
+
diff --git a/src/admin_user/admin.py b/src/admin_user/admin.py
index 820bccb..0a20948 100644
--- a/src/admin_user/admin.py
+++ b/src/admin_user/admin.py
@@ -6,7 +6,8 @@
 
 @admin.register(Administrator)
 class AdministratorAdmin(UserAdmin):
-    """Admin panel for the Admin model in the Django admin area.
+    """
+    Admin panel for the Admin model in the Django admin area.
 
     Changes made:
     - 'USERNAME_FIELD from the User model is used for creating a user.'
@@ -16,19 +17,19 @@ class AdministratorAdmin(UserAdmin):
 
     add_fieldsets = (
         (None, {
-            "fields": (
+            'fields': (
                 Administrator.USERNAME_FIELD,
                 *Administrator.REQUIRED_FIELDS,
-                "password1",
-                "password2",
-                "is_staff",
-                "is_superuser",
+                'password1',
+                'password2',
+                'is_staff',
+                'is_superuser',
             ),
         }),
     )
 
-    list_display = ("username", "email")
-    search_fields = ("username", "email")
-    list_filter = ("is_staff",)
-    list_display_links = ("username",)
-    search_help_text = "Поиск по почте или имени пользователя."
+    list_display = ('username', 'email',)
+    search_fields = ('username', 'email',)
+    list_filter = ('is_staff',)
+    list_display_links = ('username',)
+    search_help_text = 'Поиск по почте или имени пользователя.'
diff --git a/src/admin_user/apps.py b/src/admin_user/apps.py
index 996d5cb..bf55d7d 100644
--- a/src/admin_user/apps.py
+++ b/src/admin_user/apps.py
@@ -4,5 +4,5 @@
 class AdminUserConfig(AppConfig):
     """Django config for admin_user app."""
 
-    default_auto_field = "django.db.models.BigAutoField"
-    name = "admin_user"
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'admin_user'
diff --git a/src/admin_user/models.py b/src/admin_user/models.py
index e117801..ca0e53f 100644
--- a/src/admin_user/models.py
+++ b/src/admin_user/models.py
@@ -9,27 +9,28 @@
 class Administrator(AbstractUser):
     """Custom Administrator model."""
 
-    first_name = models.CharField("Имя", max_length=DEFAULT_NAME_LENGTH)
-    last_name = models.CharField("Фамилия", max_length=DEFAULT_NAME_LENGTH)
-    phone = PhoneNumberField("Номер телефона", help_text="Формат +7XXXXXXXXXX")
-    USERNAME_FIELD = "email"
-    REQUIRED_FIELDS = ("username", "first_name", "last_name", "phone")
+    first_name = models.CharField('Имя', max_length=DEFAULT_NAME_LENGTH)
+    last_name = models.CharField('Фамилия', max_length=DEFAULT_NAME_LENGTH)
+    phone = PhoneNumberField('Номер телефона', help_text='Формат +7XXXXXXXXXX')
+    USERNAME_FIELD = 'email'
+    REQUIRED_FIELDS = ('username', 'first_name', 'last_name', 'phone')
 
     email = models.EmailField(
-        "E-mail адрес",
+        'E-mail адрес',
         max_length=EMAIL_LENGTH,
         unique=True,
     )
 
     class Meta:
-        """Set verbose name and verbose name plural.
+        """
+        Set verbose name and verbose name plural.
 
         Defaults to ordering by id.
         """
 
-        ordering = ("id",)
-        verbose_name = "Администратор"
-        verbose_name_plural = "Администраторы"
+        ordering = ('id',)
+        verbose_name = 'Администратор'
+        verbose_name_plural = 'Администраторы'
 
     def __str__(self) -> str:
         """Return a string representation of User object."""
diff --git a/src/bot/apps.py b/src/bot/apps.py
index 5a62727..69d333f 100644
--- a/src/bot/apps.py
+++ b/src/bot/apps.py
@@ -5,8 +5,8 @@
 class BotConfig(AppConfig):
     """Configuration class for the bot application."""
 
-    default_auto_field = "django.db.models.BigAutoField"
-    name = "bot"
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'bot'
 
     def stop_bot(self, **kwargs):
         """Stop application."""
@@ -15,14 +15,14 @@ def stop_bot(self, **kwargs):
     def ready(self) -> None:
         """Perform actions when the application is ready."""
         import os
-        
+
         # TODO: временное решение, необходимо продумать улучшение.
-        if os.environ.get("DJANGO_MIGRATE", False):
-            if os.environ.get("RUN_MAIN", None) != "true":
+        if os.environ.get('DJANGO_MIGRATE', False):
+            if os.environ.get('RUN_MAIN', None) != 'true':
                 from bot.bot_interface import Bot
 
                 self.bot = Bot()
 
                 asgi_shutdown.connect(self.stop_bot)
 
-                self.bot.start()
\ No newline at end of file
+                self.bot.start()
diff --git a/src/bot/handlers.py b/src/bot/handlers.py
index c96a79b..fc0d85d 100644
--- a/src/bot/handlers.py
+++ b/src/bot/handlers.py
@@ -8,8 +8,8 @@ async def start(update: Update, context: ContextTypes.DEFAULT_TYPE):
     await context.bot.send_message(
         chat_id=update.effective_chat.id,
         text=(
-            "Привет, я бот онлайн школы GoodStart.\n\n"
-            "Здесь ты найдёшь лучших преподавателей."
+            'Привет, я бот онлайн школы GoodStart.\n\n'
+            'Здесь ты найдёшь лучших преподавателей.'
         ),
     )
 
@@ -23,5 +23,5 @@ async def echo(update: Update, context: ContextTypes.DEFAULT_TYPE):
     )
 
 
-start_handler = CommandHandler("start", start)
+start_handler = CommandHandler('start', start)
 echo_handler = MessageHandler(filters.TEXT & (~filters.COMMAND), echo)
diff --git a/src/core/asgi_dev.py b/src/core/asgi_dev.py
index e7084f4..e3deb97 100644
--- a/src/core/asgi_dev.py
+++ b/src/core/asgi_dev.py
@@ -3,8 +3,8 @@
 from django.core.asgi import get_asgi_application
 
 os.environ.setdefault(
-    "DJANGO_SETTINGS_MODULE",
-    "core.config.settings_dev",
+    'DJANGO_SETTINGS_MODULE',
+    'core.config.settings_dev',
 )  # настройки для разработки
 
 application = get_asgi_application()
diff --git a/src/core/asgi_prod.py b/src/core/asgi_prod.py
index 9273e1f..ef55687 100644
--- a/src/core/asgi_prod.py
+++ b/src/core/asgi_prod.py
@@ -3,8 +3,8 @@
 from django.core.asgi import get_asgi_application
 
 os.environ.setdefault(
-    "DJANGO_SETTINGS_MODULE",
-    "core.config.settings_prod",
+    'DJANGO_SETTINGS_MODULE',
+    'core.config.settings_prod',
 )  # настройки для сервера
 
 application = get_asgi_application()
diff --git a/src/core/config/settings_base.py b/src/core/config/settings_base.py
index a88501f..ae7fc8a 100644
--- a/src/core/config/settings_base.py
+++ b/src/core/config/settings_base.py
@@ -9,93 +9,93 @@
 BASE_DIR = Path(__file__).resolve().parent.parent.parent
 ROOT_DIR = BASE_DIR.parent
 
-environ.Env.read_env(os.path.join(ROOT_DIR, ".env"))
+environ.Env.read_env(os.path.join(ROOT_DIR, '.env'))
 
-STATIC_ROOT = os.path.join(ROOT_DIR, "static/")
+STATIC_ROOT = os.path.join(ROOT_DIR, 'static/')
 
-DEFAULT = "some_default_key"
+DEFAULT = 'some_default_key'
 
-SECRET_KEY = env.str("SECRET_KEY", default=DEFAULT)
+SECRET_KEY = env.str('SECRET_KEY', default=DEFAULT)
 
-TELEGRAM_TOKEN = env("TELEGRAM_TOKEN")
+TELEGRAM_TOKEN = env('TELEGRAM_TOKEN')
 
-ALLOWED_HOSTS = ["*"]
+ALLOWED_HOSTS = ['*']
 
 DEFAULT_APPS = [
-    "django.contrib.admin",
-    "django.contrib.auth",
-    "django.contrib.contenttypes",
-    "django.contrib.sessions",
-    "django.contrib.messages",
-    "django.contrib.staticfiles",
+    'django.contrib.admin',
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
 ]
 
 LOCAL_APPS = [
-    "bot.apps.BotConfig",
-    "potential_user.apps.PotentialUserConfig",
-    "admin_user.apps.AdminUserConfig",
-    "schooling.apps.SchoolingConfig",
+    'bot.apps.BotConfig',
+    'potential_user.apps.PotentialUserConfig',
+    'admin_user.apps.AdminUserConfig',
+    'schooling.apps.SchoolingConfig',
 ]
 
-EXTERNAL_APPS = ["phonenumber_field",]
+EXTERNAL_APPS = ['phonenumber_field',]
 
 INSTALLED_APPS = DEFAULT_APPS + EXTERNAL_APPS + LOCAL_APPS
 
 MIDDLEWARE = [
-    "django.middleware.security.SecurityMiddleware",
-    "django.contrib.sessions.middleware.SessionMiddleware",
-    "django.middleware.common.CommonMiddleware",
-    "django.middleware.csrf.CsrfViewMiddleware",
-    "django.contrib.auth.middleware.AuthenticationMiddleware",
-    "django.contrib.messages.middleware.MessageMiddleware",
-    "django.middleware.clickjacking.XFrameOptionsMiddleware",
+    'django.middleware.security.SecurityMiddleware',
+    'django.contrib.sessions.middleware.SessionMiddleware',
+    'django.middleware.common.CommonMiddleware',
+    'django.middleware.csrf.CsrfViewMiddleware',
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
+    'django.middleware.clickjacking.XFrameOptionsMiddleware',
 ]
 
-ROOT_URLCONF = "core.urls"
+ROOT_URLCONF = 'core.urls'
 
 TEMPLATES = [
     {
-        "BACKEND": "django.template.backends.django.DjangoTemplates",
-        "DIRS": [],
-        "APP_DIRS": True,
-        "OPTIONS": {
-            "context_processors": [
-                "django.template.context_processors.debug",
-                "django.template.context_processors.request",
-                "django.contrib.auth.context_processors.auth",
-                "django.contrib.messages.context_processors.messages",
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'DIRS': [],
+        'APP_DIRS': True,
+        'OPTIONS': {
+            'context_processors': [
+                'django.template.context_processors.debug',
+                'django.template.context_processors.request',
+                'django.contrib.auth.context_processors.auth',
+                'django.contrib.messages.context_processors.messages',
             ],
         },
     },
 ]
 
-WSGI_APPLICATION = "core.wsgi.application"
+WSGI_APPLICATION = 'core.wsgi.application'
 
-AUTH_USER_MODEL = "admin_user.Administrator"
+AUTH_USER_MODEL = 'admin_user.Administrator'
 
 AUTH_PASSWORD_VALIDATORS = [
     {
-        "NAME": "django.contrib.auth.password_validation.UserAttributeSimilarityValidator",
+        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
     },
     {
-        "NAME": "django.contrib.auth.password_validation.MinimumLengthValidator",
+        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
     },
     {
-        "NAME": "django.contrib.auth.password_validation.CommonPasswordValidator",
+        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
     },
     {
-        "NAME": "django.contrib.auth.password_validation.NumericPasswordValidator",
+        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
     },
 ]
 
-LANGUAGE_CODE = "ru-RU"
+LANGUAGE_CODE = 'ru-RU'
 
-TIME_ZONE = "UTC"
+TIME_ZONE = 'UTC'
 
 USE_I18N = True
 
 USE_TZ = True
 
-STATIC_URL = "static/"
+STATIC_URL = 'static/'
 
-DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
+DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
diff --git a/src/core/config/settings_for_dev.py b/src/core/config/settings_for_dev.py
index 3d68257..5717c3b 100644
--- a/src/core/config/settings_for_dev.py
+++ b/src/core/config/settings_for_dev.py
@@ -5,15 +5,15 @@
 DEBUG = True
 
 DATABASES = {
-    "default": {
-        "ENGINE": env.str(
-            "POSTGRES_ENGINE",
-            default="django.db.backends.postgresql",
+    'default': {
+        'ENGINE': env.str(
+            'POSTGRES_ENGINE',
+            default='django.db.backends.postgresql',
         ),
-        "NAME": env.str("POSTGRES_NAME", default="postgres"),
-        "USER": env.str("POSTGRES_USER", default="postgres"),
-        "PASSWORD": env.str("POSTGRES_PASSWORD", default="postgres"),
-        "HOST": env.str("POSTGRES_HOST", default="localhost"),
-        "PORT": env.str("POSTGRES_PORT", default="5432"),
+        'NAME': env.str('POSTGRES_NAME', default='postgres'),
+        'USER': env.str('POSTGRES_USER', default='postgres'),
+        'PASSWORD': env.str('POSTGRES_PASSWORD', default='postgres'),
+        'HOST': env.str('POSTGRES_HOST', default='localhost'),
+        'PORT': env.str('POSTGRES_PORT', default='5432'),
     },
 }
diff --git a/src/core/config/settings_for_prod.py b/src/core/config/settings_for_prod.py
index 8befadc..80db377 100644
--- a/src/core/config/settings_for_prod.py
+++ b/src/core/config/settings_for_prod.py
@@ -5,15 +5,15 @@
 DEBUG = False
 
 DATABASES = {
-    "default": {
-        "ENGINE": env.str(
-            "POSTGRES_ENGINE",
-            default="django.db.backends.postgresql",
+    'default': {
+        'ENGINE': env.str(
+            'POSTGRES_ENGINE',
+            default='django.db.backends.postgresql',
         ),
-        "NAME": env.str("POSTGRES_NAME", default="postgres"),
-        "USER": env.str("POSTGRES_USER", default="postgres"),
-        "PASSWORD": env.str("POSTGRES_PASSWORD", default="postgres"),
-        "HOST": env.str("POSTGRES_HOST", default="localhost"),
-        "PORT": env.str("POSTGRES_PORT", default="5432"),
+        'NAME': env.str('POSTGRES_NAME', default='postgres'),
+        'USER': env.str('POSTGRES_USER', default='postgres'),
+        'PASSWORD': env.str('POSTGRES_PASSWORD', default='postgres'),
+        'HOST': env.str('POSTGRES_HOST', default='localhost'),
+        'PORT': env.str('POSTGRES_PORT', default='5432'),
     },
 }
diff --git a/src/core/config/settings_for_tests.py b/src/core/config/settings_for_tests.py
index 1e0779c..8b8e301 100644
--- a/src/core/config/settings_for_tests.py
+++ b/src/core/config/settings_for_tests.py
@@ -5,8 +5,8 @@
 DEBUG = False
 
 DATABASES = {
-    "default": {
-        "ENGINE": "django.db.backends.sqlite3",
-        "NAME": BASE_DIR / "db.sqlite3",
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': BASE_DIR / 'db.sqlite3',
     },
 }
diff --git a/src/core/logging/logger.py b/src/core/logging/logger.py
index f016e2e..6593cc0 100644
--- a/src/core/logging/logger.py
+++ b/src/core/logging/logger.py
@@ -5,7 +5,7 @@ def inner(*args, **kwargs):
         try:
             return f(*args, **kwargs)
         except Exception as e:
-            error_message = f"Произошла ошибка: {e}"
+            error_message = f'Произошла ошибка: {e}'
             print(error_message)
             raise e
 
diff --git a/src/core/settings.py b/src/core/settings.py
index 235edb4..5b631e2 100644
--- a/src/core/settings.py
+++ b/src/core/settings.py
@@ -9,86 +9,86 @@
 
 BASE_DIR = Path(__file__).resolve().parent.parent
 
-environ.Env.read_env(os.path.join(BASE_DIR, ".env"))
+environ.Env.read_env(os.path.join(BASE_DIR, '.env'))
 
-SECRET_KEY = env("SECRET_KEY")
+SECRET_KEY = env('SECRET_KEY')
 
-DEBUG = env("DEBUG")
+DEBUG = env('DEBUG')
 
-ALLOWED_HOSTS = env("ALLOWED_HOSTS").split()
+ALLOWED_HOSTS = env('ALLOWED_HOSTS').split()
 
 INSTALLED_APPS = [
-    "django.contrib.admin",
-    "django.contrib.auth",
-    "django.contrib.contenttypes",
-    "django.contrib.sessions",
-    "django.contrib.messages",
-    "django.contrib.staticfiles",
-    "bot.apps.BotConfig",
+    'django.contrib.admin',
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+    'bot.apps.BotConfig',
 ]
 
 MIDDLEWARE = [
-    "django.middleware.security.SecurityMiddleware",
-    "django.contrib.sessions.middleware.SessionMiddleware",
-    "django.middleware.common.CommonMiddleware",
-    "django.middleware.csrf.CsrfViewMiddleware",
-    "django.contrib.auth.middleware.AuthenticationMiddleware",
-    "django.contrib.messages.middleware.MessageMiddleware",
-    "django.middleware.clickjacking.XFrameOptionsMiddleware",
+    'django.middleware.security.SecurityMiddleware',
+    'django.contrib.sessions.middleware.SessionMiddleware',
+    'django.middleware.common.CommonMiddleware',
+    'django.middleware.csrf.CsrfViewMiddleware',
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
+    'django.middleware.clickjacking.XFrameOptionsMiddleware',
 ]
 
-ROOT_URLCONF = "core.urls"
+ROOT_URLCONF = 'core.urls'
 
 TEMPLATES = [
     {
-        "BACKEND": "django.template.backends.django.DjangoTemplates",
-        "DIRS": [],
-        "APP_DIRS": True,
-        "OPTIONS": {
-            "context_processors": [
-                "django.template.context_processors.debug",
-                "django.template.context_processors.request",
-                "django.contrib.auth.context_processors.auth",
-                "django.contrib.messages.context_processors.messages",
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'DIRS': [],
+        'APP_DIRS': True,
+        'OPTIONS': {
+            'context_processors': [
+                'django.template.context_processors.debug',
+                'django.template.context_processors.request',
+                'django.contrib.auth.context_processors.auth',
+                'django.contrib.messages.context_processors.messages',
             ],
         },
     },
 ]
 
-WSGI_APPLICATION = "core.wsgi.application"
+WSGI_APPLICATION = 'core.wsgi.application'
 
 DATABASES = {
-    "default": {
-        "ENGINE": "django.db.backends.sqlite3",
-        "NAME": BASE_DIR / "db.sqlite3",
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': BASE_DIR / 'db.sqlite3',
     },
 }
 
 AUTH_PASSWORD_VALIDATORS = [
     {
-        "NAME": "django.contrib.auth.password_validation.UserAttributeSimilarityValidator",
+        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
     },
     {
-        "NAME": "django.contrib.auth.password_validation.MinimumLengthValidator",
+        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
     },
     {
-        "NAME": "django.contrib.auth.password_validation.CommonPasswordValidator",
+        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
     },
     {
-        "NAME": "django.contrib.auth.password_validation.NumericPasswordValidator",
+        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
     },
 ]
 
-LANGUAGE_CODE = "ru-RU"
+LANGUAGE_CODE = 'ru-RU'
 
-TIME_ZONE = "UTC"
+TIME_ZONE = 'UTC'
 
 USE_I18N = True
 
 USE_TZ = True
 
-STATIC_URL = "static/"
+STATIC_URL = 'static/'
 
-DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
+DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
 
-TELEGRAM_TOKEN = env("TELEGRAM_TOKEN")
+TELEGRAM_TOKEN = env('TELEGRAM_TOKEN')
diff --git a/src/core/urls.py b/src/core/urls.py
index 083932c..dfc7362 100644
--- a/src/core/urls.py
+++ b/src/core/urls.py
@@ -2,5 +2,5 @@
 from django.urls import path
 
 urlpatterns = [
-    path("admin/", admin.site.urls),
+    path('admin/', admin.site.urls),
 ]
diff --git a/src/core/wsgi.py b/src/core/wsgi.py
index 4892961..f7ff4d6 100644
--- a/src/core/wsgi.py
+++ b/src/core/wsgi.py
@@ -2,6 +2,6 @@
 
 from django.core.wsgi import get_wsgi_application
 
-os.environ.setdefault("DJANGO_SETTINGS_MODULE", "core.settings")
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'core.settings')
 
 application = get_wsgi_application()
diff --git a/src/manage.py b/src/manage.py
index 204ae93..4b4d034 100644
--- a/src/manage.py
+++ b/src/manage.py
@@ -8,8 +8,8 @@
 def main():
     """Run administrative tasks."""
     os.environ.setdefault(
-        "DJANGO_SETTINGS_MODULE",
-        "core.config.settings_for_dev",
+        'DJANGO_SETTINGS_MODULE',
+        'core.config.settings_for_dev',
     )  # настройки для разработки
     try:
         from django.core.management import execute_from_command_line
@@ -22,5 +22,5 @@ def main():
     execute_from_command_line(sys.argv)
 
 
-if __name__ == "__main__":
+if __name__ == '__main__':
     main()
diff --git a/src/potential_user/apps.py b/src/potential_user/apps.py
index 3114266..2c84873 100644
--- a/src/potential_user/apps.py
+++ b/src/potential_user/apps.py
@@ -4,6 +4,6 @@
 class PotentialUserConfig(AppConfig):
     """Config of PotentialUserApp."""
 
-    default_auto_field = "django.db.models.BigAutoField"
-    name = "potential_user"
-    verbose_name = "Заявки на регистрацию"
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'potential_user'
+    verbose_name = 'Заявки на регистрацию'
diff --git a/src/potential_user/models.py b/src/potential_user/models.py
index 63ff607..3348b7d 100644
--- a/src/potential_user/models.py
+++ b/src/potential_user/models.py
@@ -6,11 +6,11 @@ class ApplicationForm(models.Model):
     """Модель регистрации пользователей. Роль устанавливает администратор."""
 
     ROLE_CHOICES = (
-        ("teacher", "Преподаватель"),
-        ("student", "Учащийся"),
+        ('teacher', 'Преподаватель'),
+        ('student', 'Учащийся'),
     )
 
-    telegram_id = models.IntegerField("Telegram ID", unique=True)
+    telegram_id = models.IntegerField('Telegram ID', unique=True)
     role = models.CharField(choices=ROLE_CHOICES, max_length=20)
     name = models.CharField(max_length=20)
     surname = models.CharField(max_length=20)
@@ -21,9 +21,9 @@ class ApplicationForm(models.Model):
     class Meta:
         """Meta class of ApplicationForm."""
 
-        verbose_name = "Заявка"
-        verbose_name_plural = "Заявки"
+        verbose_name = 'Заявка'
+        verbose_name_plural = 'Заявки'
 
     def __str__(self):
         """Return a string representation."""
-        return f"{self.name} {self.surname} {self.role}"
+        return f'{self.name} {self.surname} {self.role}'
diff --git a/src/schooling/apps.py b/src/schooling/apps.py
index af05dc3..06850b9 100644
--- a/src/schooling/apps.py
+++ b/src/schooling/apps.py
@@ -4,5 +4,5 @@
 class SchoolingConfig(AppConfig):
     """Config of schooling app for interactions with learning entities."""
 
-    default_auto_field = "django.db.models.BigAutoField"
-    name = "schooling"
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'schooling'