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Catches discord.NotFound in utils.mod.mass_purge (#3414)

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* Catches `discord.NotFound` in `mass_purge`

* Create 3378.bugfix.rst
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Flame442 2020-01-20 14:09:17 -08:00 committed by Michael H
parent b085c1501f
commit 8f04fd436f
2 changed files with 7 additions and 5 deletions
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changelog.d/3378.bugfix.rst Normal file
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@ -0,0 +1 @@
Fixed an error when ``redbot.core.utils.mod.mass_purge`` is passed ``COUNT % 100 == 1`` messages AND the last message in the list does not exist.

11
redbot/core/utils/mod.py
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@ -38,12 +38,13 @@ async def mass_purge(messages: List[discord.Message], channel: discord.TextChann
"""
while messages:
if len(messages) > 1:
# discord.NotFound can be raised when `len(messages) == 1` and the message does not exist.
# As a result of this obscure behavior, this error needs to be caught just in case.
try:
await channel.delete_messages(messages[:100])
messages = messages[100:]
else:
await messages[0].delete()
messages = []
except discord.errors.HTTPException:
pass
messages = messages[100:]
await asyncio.sleep(1.5)