refactor: upgrade code to >=python3.7 (pre-commit)

Part-of: <https://dev.funkwhale.audio/funkwhale/funkwhale/-/merge_requests/2189>

api/funkwhale_api/cli/users.py

@@ -7,7 +7,7 @@ from funkwhale_api.users import models, serializers, tasks
 from . import base, utils
 
 
-class FakeRequest(object):
+class FakeRequest:
     def __init__(self, session={}):
         self.session = session
 
@@ -44,7 +44,7 @@ def handler_create_user(
     for permission in permissions:
         if permission in models.PERMISSIONS:
             utils.logger.debug("Setting %s permission to True", permission)
-            setattr(user, "permission_{}".format(permission), True)
+            setattr(user, f"permission_{permission}", True)
         else:
             utils.logger.warn("Unknown permission %s", permission)
     utils.logger.debug("Creating actor…")
@@ -56,7 +56,7 @@ def handler_create_user(
 @transaction.atomic
 def handler_delete_user(usernames, soft=True):
     for username in usernames:
-        click.echo("Deleting {}…".format(username))
+        click.echo(f"Deleting {username}…")
         actor = None
         user = None
         try:
@@ -178,9 +178,9 @@ def create(username, password, email, superuser, staff, permission, upload_quota
         permissions=permission,
         upload_quota=upload_quota,
     )
-    click.echo("User {} created!".format(user.username))
+    click.echo(f"User {user.username} created!")
     if generated_password:
-        click.echo("  Generated password: {}".format(generated_password))
+        click.echo(f"  Generated password: {generated_password}")
 
 
 @base.delete_command(group=users, id_var="username")