async def purge(self, ctx, num: int, *targets: User):
"""Bulk delete messages of a certain amount posted by some targeted Discord users,
if not providedit just deletes all the messages which it encounters"""
total_deleted = 0
messages = ctx.history(limit=None)
await messages.__anext__() # includes the invoker's message, so skip that.
# discord has a bulk-deletion method which has limits that,
# messages cannot be deleted older than 14 days.
# cannot delete more than 100 messages at once.
async for chunk in chunked(map(lambda m: m[1], takewhile(
lambda m: m[0] < num and (ctx.message.created_at - m[1].created_at).days < 14,
filterfalse(lambda m: not(m[1].author in targets or not targets), aenumerate(messages)))), 100):
chunk = list(chunk)
await ctx.channel.delete_messages(chunk) # delete 100 messages at once.
total_deleted += len(chunk)
# for the rest follow the manual deletion way.
async for msg in messages:
if not total_deleted <= num:
await ctx.send(f"Purged {num} messages in {ctx.channel.mention}.",
delete_after=8)
break
if msg.author in targets or targets is None:
await msg.delete()
total_deleted += 1
async def test_filterfalse_coroutine_list(self):
async def pred(x):
return x % 2 == 0
it = ait.filterfalse(pred, srange)
for k in [1, 3]:
self.assertEqual(await ait.next(it), k)
with self.assertRaises(StopAsyncIteration):
await ait.next(it)