Make the largest loops lazier and async to avoid blocking (#3767)

* lets reduce config calls here

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* Lets normalize how we name config attributes across the bot.

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* ....

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* Just a tiny PR improving config call in a lot of places (Specially events and Help)

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* stop using `bot.guilds` in `on_command_add`

* Just a tiny PR improving config call in a lot of places (Specially events and Help)

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* missed this one

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* nothing to see here

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* lets reduce config calls here

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* Just a tiny PR improving config call in a lot of places (Specially events and Help)

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* stop using `bot.guilds` in `on_command_add`

* missed this one

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* welp

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* welp

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* welp

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* jack

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* Update redbot/cogs/mod/kickban.py

Co-Authored-By: jack1142 <6032823+jack1142@users.noreply.github.com>

* Update redbot/cogs/filter/filter.py

Co-Authored-By: jack1142 <6032823+jack1142@users.noreply.github.com>

* jack

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* make all large loops async to avoid blocking larger bots

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* ...

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* okay now working AsyncGen

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* may or may not have forgotten black

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* Apply suggestions from code review

Co-Authored-By: jack1142 <6032823+jack1142@users.noreply.github.com>

* jack's review

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* DOCS

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* DOCS

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* Apply suggestions from code review

Co-Authored-By: jack1142 <6032823+jack1142@users.noreply.github.com>

* jack

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

* Apply suggestions from code review

Co-Authored-By: jack1142 <6032823+jack1142@users.noreply.github.com>

* Update redbot/core/utils/__init__.py

Co-Authored-By: jack1142 <6032823+jack1142@users.noreply.github.com>

* Update redbot/core/utils/__init__.py

Co-Authored-By: jack1142 <6032823+jack1142@users.noreply.github.com>

* avoid loop if possible and if not only iterate once

Signed-off-by: Drapersniper <27962761+drapersniper@users.noreply.github.com>

Co-authored-by: jack1142 <6032823+jack1142@users.noreply.github.com>

redbot/cogs/mod/kickban.py

@@ -7,6 +7,7 @@ from typing import cast, Optional, Union
 
 import discord
 from redbot.core import commands, i18n, checks, modlog
+from redbot.core.utils import AsyncIter
 from redbot.core.utils.chat_formatting import pagify, humanize_number, bold
 from redbot.core.utils.mod import is_allowed_by_hierarchy, get_audit_reason
 from .abc import MixinMeta
@@ -134,7 +135,7 @@ class KickBanMixin(MixinMeta):
     async def check_tempban_expirations(self):
         member = namedtuple("Member", "id guild")
         while self == self.bot.get_cog("Mod"):
-            for guild in self.bot.guilds:
+            async for guild in AsyncIter(self.bot.guilds, steps=100):
                 if not guild.me.guild_permissions.ban_members:
                     continue
                 try: