the rest of it is basically a named capture group, a positive lookahead, and a backreference
#esoteric-python
whole kiln
though apparently I can do a backreference without using a named capture group 🤷🏻
and I can specify more than one thing in the lookahead of course
didnt think of that
(\d)(?=\d\1)
charred steeple
'''
124 0 0 100 1 00 22 12 114 30 0 124 0 0 100
02 00 22 12
114 30 0 100 03 00
71 72 110 41
00 124 00 00
100 01 00 22
115 48 00 100
04 00 71 72 110 23 0 124 0 0 100
2 0 22 115 66 00 100 5 0 71 72 110 5 0 124 0
00 71 72 100 00 00
83 4 7 24 24 00 19 24
24 00 24 34 23 65
26 12 76 74 127 147
62 2 54 85 22 76 102 105 122 122 98 117 122 122 9
'''
_ = lambda __, ___: str(bytearray([int(_) for _ in __doc__.split()][__:-___]))
_.__code__ = type(_.__code__)(1, 1, 2, 67, _(0, 1), (None, 3, 5, _(-9, 1),
_(-9, 5), _(-5, 1)), (), ('',), '', '', 0, '', (), ())
for __ in range(1, 100): _(__)
brisk zenith
oh interesting how you put the bytecode in the docstring like that. that's some really nifty stuff right there :D
to keep the ints in the docstring a consistent width, you could do hex codes, i.e 0x7c for 124.
sick hound
yeah but wouldnt that mess up the int(_) call?
brisk zenith
nope
sick hound
he would have to do int(_, 16) right
brisk zenith
nope
when i was editing the cpython source for my custom builtin, i noticed that int(...) is fine with it if you prefix it with 0x
oh huh
maybe it isn't
i swear it is
wait 👀
sick hound
yeah
by default it will try to convert it to base 10
you can have a 0x7c literal tho
brisk zenith
oh, maybe i was thinking of the actual parser there
sick hound
>>> 0x7c
124```i swear part of the cpython source actually checks for a prefix first
i'm not sure though
lemme take a look
/* Convert an int object to a string, using a given conversion base,
which should be one of 2, 8 or 16. Return a string object.
If base is 2, 8 or 16, add the proper prefix '0b', '0o' or '0x'
if alternate is nonzero. */
static int
long_format_binary(PyObject *aa, int base, int alternate,
PyObject **p_output, _PyUnicodeWriter *writer,
_PyBytesWriter *bytes_writer, char **bytes_str)
{
...
}
ah okay, maybe i was thinking of this
brisk zenith
it is
brisk zenith
self.cells: List[List[Optional[Tile]]] = [
[None for _ in range(size)] for _ in range(size)
]
help
buoyant agate
self.cells: List[List[Optional[Tile]]] = [[None] * size for _ in range(size)]```i feel like that's sorta inconsistent
one list is generated with *, one is generated with a listcomp
buoyant agate
* is actually faster in this case, and shorter
brisk zenith
i'm more concerned about readability.
buoyant agate
But yea, I can understand why you'd want the double list comp
brisk zenith
resorted to this```py
TileGrid = List[List[Optional[Tile]]]
...
self.cells: TileGrid = [
[None for _ in range(size)] for _ in range(size)
]
viral hedge
That is.. quite the typehinting with defaults
buoyant agate
Right, forgot about type defs
wind maple
use type aliases
brisk bloom
The following question is not python based but a general issue I'm facing with github. I'm searched high and low for answers but couldnt find one. If anyone happens to know the answer to it, please let me know why this might be happening. I'd really appreciate it.
Here it goes - I'm having a weird issue with my profile not showing up on the insights page on github contributors list. I recently joined the companay and the guy who joined after me which has code which got committed shown in there.
brisk bloom
@unique shoal I gotcha
Is there one here @unique shoal ?
cause I can't seem to find any
unique shoal
there are several under the off-topic category
unique shoal
👍
sterile edge
Executing <Task pending coro=<BaseSelectorEventLoop.sock_connect() running at /tmp/python-build.20180815000420.1960/Python-3.6.5/Lib/asyncio/selector_events.py:450> wait_for=<Future pending cb=[BaseSelectorEventLoop._sock_connect_done(9)(), <TaskWakeupMethWrapper object at 0xb5fd8350>()] created at /tmp/python-build.20180815000420.1960/Python-3.6.5/Lib/asyncio/base_events.py:276> cb=[_run_until_complete_cb() at /tmp/python-build.20180815000420.1960/Python-3.6.5/Lib/asyncio/base_events.py:177] created at /tmp/python-build.20180815000420.1960/Python-3.6.5/Lib/asyncio/base_events.py:447> took 0.106 seconds
Executing <Task pending coro=<BaseSelectorEventLoop.sock_connect() running at /tmp/python-build.20180815000420.1960/Python-3.6.5/Lib/asyncio/selector_events.py:450> wait_for=<Future pending cb=[BaseSelectorEventLoop._sock_connect_done(9)(), <TaskWakeupMethWrapper object at 0xb3598570>()] created at /tmp/python-build.20180815000420.1960/Python-3.6.5/Lib/asyncio/base_events.py:276> cb=[_run_until_complete_cb() at /tmp/python-build.20180815000420.1960/Python-3.6.5/Lib/asyncio/base_events.py:177] created at /tmp/python-build.20180815000420.1960/Python-3.6.5/Lib/asyncio/base_events.py:447> took 0.105 seconds```what does it mean
sterile edge
its executing
cuz there was something like this
0:12:11 load avg: 1.19 [ 17/406] test_abstract_numbers
unique shoal
benchmarking coroutines?
sterile edge
o_o
crimson pumice
Can i ask about .sh files here.
crimson pumice
Hmm.Sorry, this seemed like a off-topic
wind maple
offtopic channels are under the offtopic group
viral hedge
Does this quality as barely? ```py
from discord.ext import commands
class Wtf:
def init(self, bot): self.bot=bot
async def on_message(self,msg): await msg.channel.send("Howdy!") if msg.content.startswith("?!hey") else None
class Wtf1:
def init(self, bot): self.bot=bot
async def on_message(self,msg): await msg.channel.send("Howdy!") if msg.content.startswith("?!hi") else None
class Wtf2:
def init(self, bot): self.bot=bot
async def on_message(self,msg): await msg.channel.send("Howdy!") if msg.content.startswith("?!hello") else None
class Wtf3:
def init(self, bot): self.bot=bot
async def on_message(self,msg): await msg.channel.send("Howdy!") if msg.content.startswith("?!howdy") else None
class Wtf4:
def init(self, bot): self.bot=bot
async def on_message(self,msg): await msg.channel.send("Howdy!") if msg.content.startswith("?!sup") else None
def setup(bot): bot.add_cog(Wtf(bot)); bot.add_cog(Wtf1(bot)); bot.add_cog(Wtf2(bot)); bot.add_cog(Wtf3(bot)); bot.add_cog(Wtf4(bot))
#-----------bot.py-------------
import discord
from discord.ext.commands import Bot
bot = Bot(command_prefix="?!")
bot.load_extension("commands")
bot.run("sandwhichmanwhich-rimjob")```
novel vine
yes
viral hedge
I made my own command system 
unique shoal
:c
tepid glacier
aaaaaaaaaaaa
crisp pendant
def remove_label(self, name):
self.__applyall(
lambda label, name=name: (
lambda label: self.labels.pop(self.labels.index(label)))(label) if label.cget('text') == name else None
)
I regret nothing
arctic bridge
What in the name of Mormonism is that
unique shoal
@arctic bridge wuh
tardy kindle
I don't even want to try to understand what that does
buoyant agate
I think you could remove the outer lambda
def remove_label(self, name):
self.__applyall(
lambda label: self.labels.pop(self.labels.index(label)) if label.cget('text') == name else None
)```>>> """t""""""h""""""i""""""s""" == "this"
True
>>>
>>> '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' == ''
True
>>>```
cunning wave
>>> ''''''''''"'''''''''' == ''''"'''
'\'" == "'
>>>
>>> len('"))'";print("'hello, world"'")"';s=%s'"%"'hello"'";exit(")
42
>>>```(syntax highlighting intentionally not used to make it weirder)
unique shoal
>>> len('"))'";print("'hello, world"'")"';s=%s'"%"'hello"'";exit(")
42
>>>```
tropic gulch
resistance to syntax highlighting is futile
sick hound
>>> eval('''len('"))'";print("'hello, world"'")"';s=%s'"%"'hello"'";exit(")''')
42
>>> ```
atomic violet
does anyone know if bashrc/zshrc are executed when user logs into the session via graphical login screen (as opposed to logging into console and typing xinit)?
brisk zenith
that's not a question for #esoteric-python (read the channel topic!), but those scripts are executed once a shell session has been started. that means they're executed when logging in on a tty, opening a terminal window, etc.
atomic violet
I mean it should be run through shell after login sure but will the interactive rc's (opposed to profile/zlogin) be executed when you are never brought to prompt on startup?
tropic gulch
bashrc is for interactive non-login shells only
.profile (or .bash_profile or .bash_login) is read for login shells
brisk zenith
oh right okay ^-^
tropic gulch
it's written as comment at the top of each of those files by default, at least on Ubuntu
tepid glacier
Ye
The .bash_profile equivalent for Z shell is .zshenv
Or is it .zlogin
One of those
.zshenv is always sourced, then .zprofile is sourced if it's a login shell, then .zshrc is sourced if it's interactive, then .zlogin is sourced if it's a login shell
sick hound
´´´r = float(input('Quantos reais você tem na carteira? R$'))
d = r/3,91
print('Com R${:.2f} você pode comprar U${:.2f}'.format(r, d))
´´´
d = r/3,91
print('Com R${:.2f} você pode comprar U${:.2f}'.format(r, d))
Why isn't it working?
tepid glacier
If you're looking for Python help, ask in one of the help channels
sick hound
Ok
brisk zenith
@quartz zodiac (moving to here) if you run it through python it won't scream about SyntaxErrors (just other errors, which the bytecode modifications fix :D)
quartz zodiac
Your thing?
brisk zenith
yep
quartz zodiac
Maybe I could "fix" the syntax errors... 
brisk zenith
you'd have to delve into the cpython implementation for that.
which would be possible, but far from easy.
quartz zodiac
It's a nice project for a rainy day.
brisk zenith
sure. would be difficult to distribute to other people though, as you'd essentially be making your own version of python itself at that point.
quartz zodiac
Naaaahhh, I'll do whatever I can to not do that.
sacred shuttle
i need help
quartz zodiac
And why's the channel called "barely Python" the place to ask for help, @sacred shuttle?
sacred shuttle
idek
sick hound
they've already asked in #help-coconut
quartz zodiac
Rather than, you know, the 6 channels called "help"...
sacred shuttle
well nobody help me in the oothers
quartz zodiac
You waited not even a minute before asking a second time.
cunning wave
In some forums it might take days or even weeks until you get hrlp
So compared to them you'll get help here quite fast
sacred shuttle
well okay
atomic violet
Anyone else feel frustrated with the white/alabaster theme of Read the Docs (flask, requests, etc.)? Seems like it's been getting somewhat trendy for python projects but I always get lost and struggle to find specific methods/sections in it opposed to the standard blue theme with a sidebar.
brisk zenith
i refer to those quite often but i don't typically struggle to make my way through them, but i do certainly prefer the other theme. also, this :D
atomic violet
Where would my rant fit then? It's not quite python nor python specific, just "barely python" so it felt perfect here. 😪
brisk zenith
i do feel like this channel needs a better name or something, honestly. ¯_(ツ)_/¯
cunning wave
The channel name and inability or lazyness of users to read channel descriptions makes this channel miss used quite often
sick hound
with switch(value):
with case(1):
print('hello')
with case(2):
print('hello, again')
with default:
print('default')```But but I want breaks
sick hound
hmm
sick hound
while switch(value):
with case(1):
print('hello')
break
with case(2):
print('hello again')
break
with default:
print('hi')
break```oh wait, maybe it is.
cunning wave
Also youd usually do {} around the switch block
brisk zenith
¯_(ツ)_/¯
cunning wave
Do one would have to subclass the dictionary
brisk zenith
you can't put multiple statements in dictionary keys, that's why it's not possible
sick hound
^
cunning wave
Hmmmmmmmmmm
pure dew
or just
sick hound
you can't put any statements in dictionary keys/values
sick hound
>>> {x: y = 1}
File "<stdin>", line 1
{x: y = 1}
^
SyntaxError: invalid syntax```oh right.
cunning wave
DICTONIARIES WITH DICTIONARIES CONTAINING LISTS OF INSTRUCTIONS
brisk zenith
NIX NO
brisk zenith
IMPORT BRACES
sick hound
from __future__ import braces```hrm 
you may need to modify the parser to make it clean
brisk zenith
already been discussed, but it's not really ideal
sick hound
switch value:
case 1:
print('hello')
break
case 2:
print('hello again')
break```at that point you may as well make a PEP and PR it
sick hound
if you want something like that then you need to change the parser
brisk zenith
yup
cunning wave
I changed the parsers before
brisk zenith
same here
cunning wave
Like in 2.7 if you're not modifying the elif else grammar everything's just edit the grammar file
In 3.6
edit grammar file + millions of c files to make one change
sick hound
while switch(value):
if case(1):
print('hello')
break
if case(2):
print('hello')
break
if default:
print('hello')
break``` this could be possible without any code-changing magic at alldefault = True
sacred shuttle
T_T
brisk zenith
# The default filesystem data when using `mkfs.vfat -F 12`
# from `dosfstools` on a typical 1.44M file/partition/etc.
# Rows of null bytes have been removed for convenience.
_VFAT12_SPARSE_DATA = {
# The MBR sector at the start of the storage.
0x000000: """
3ceb 6d90 666b 2e73 6166 0074 0102 0001
e002 4000 f00b 0009 0012 0002 0000 0000
0000 0000 0000 5529 9d4e 4ee8 204f 414e
454d 2020 2020 4146 3154 2032 2020 1f0e
5bbe ac7c c022 0b74 b456 bb0e 0007 10cd
eb5e 32f0 cde4 cd16 eb19 54fe 6968 2073
7369 6e20 746f 6120 6220 6f6f 6174 6c62
2065 6964 6b73 202e 5020 656c 7361 2065
6e69 6573 7472 6120 6220 6f6f 6174 6c62
2065 6c66 706f 7970 6120 646e 0a0d 7270
7365 2073 6e61 2079 656b 2079 6f74 7420
7972 6120 6167 6e69 2e20 2e2e 0d20 000a
""",
# MBR signature and something else, not sure.
0x0001ed: """
aa55 fff0 00ff 0000 0000 0000 0000 0000
""",
# Same as above. Perhaps metadata boundaries?
0x001400: """
fff0 00ff 0000 0000 0000 0000 0000 0000
""",
# Just some null bytes to truncate at 1.44M
0x167ff0: """
0000 0000 0000 0000 0000 0000 0000 0000
"""
}
how's this for code-gore? :^)
sick hound
import sys
_f_switches = {}
def _getswitch(frame, exact=False):
if not frame in _f_switches:
return None
result = None
for s in _f_switches[frame]:
if exact:
if s[0] == frame.f_lasti:
if result is None or result[0] <= s[0]:
result = s
elif s[0] <= frame.f_lasti:
if result is None or result[0] <= s[0]:
result = s
return result
def switch(val):
frame = sys._getframe(1)
if not frame in _f_switches:
_f_switches[frame] = []
s = _getswitch(frame, exact=True)
if s:
raise SyntaxError((s, frame.f_lasti))
_f_switches[frame].append([frame.f_lasti, val, False])
return True
def case(val):
frame = sys._getframe(1)
s = _getswitch(frame)
if s is None:
raise SyntaxError
elif s[2]:
return True
elif s[1] == val:
s[2] = True
return True
return False
default = True```value = 0
while switch(value):
if case(0):
print('Zero')
if case(1):
print('One')
break
if case(2):
print('Two')
break
if default:
print('Default')
break
value = 4
while switch(value):
if case(0):
print('Zero')
if case(1):
print('One')
break
if case(2):
print('Two')
break
if default:
print('Default')
break
# Output: Zero, One, Default```nifty
sick hound
no decorators
brisk zenith
that's what i was thinking
sick hound
Beautiful
calm rampart
for sw in switch(value):
if sw.case(1): ...
if sw.default: ...
default would have to be last though
calm rampart
what about just implementing goto, then implementing switch on top of goto
use strings for labels
def foo():
some stuff
"label:"
some other stuff
goto("label")```def bar():
while switch(value):
"case"(1)
some stuff
"case"(2)
some other stuff
break```convert switch to a goto that goes to any statement that has "case"(the value) inside the loop
the problem with any solution that doesn't modify the parser or modify the bytecode is that the whole set of case values isn't available to check if default should be reached
sick hound
look at my solution
calm rampart
default = True simply is not good enough
sick hound
if any of the cases get triggered and break then it won't even reach the if default:
calm rampart
switch(2) {
default: printf("default\n"); break;
case 2: printf("case 2\n"); break;
}```
light patrol
sick hound
not exactly, but you can discuss math related stuff in an off topic channel
pure dew
I'm not sure this totally fits, but it's kinda a VM language, and there isn't a channel for "totally obscure things no one should want to do", so I'll post it here
brisk zenith
probably suitable
pure dew
Long story short, I'm making a Discord bot with discord.py that takes bash syntax, turns it into an AST (courtesy of bashlex), and then runs commands in python instead of the shell.
The couple design iterations I've had so far don't work too well. Has anyone heard of a project like this, or have anu ideas for actually executing the commands while handling redirection, piping, chaining, conditionals, iterators, etc?
brisk zenith
hmm..
pure dew
I've been using a StringIO for stdout and stderr, then posting the contents of that in discord on command completion.
Code is at https://gitlab.a-sketchy.site/AnonymousDapper/dash if you're interested
brisk zenith
looks interesting, certainly
my only suggestion would be to look at how sh itself works
pure dew
Yea I've been reading about piping and redirection
My thought was to have a session context that handles chaining and iterators and whatnot and just make a new discord.py context within that for each command
brisk zenith
what sort of commands does this bot respond to?
gimme an example of something you'd like to have in there
pure dew
right now it does sudo, echo, shutdown, sleep, etc
some basic shell stuff
like echo 55 && sleep 3 ; echo sleep over
it does that fine, but its messy, and i kinda locked myself with some design choices
brisk zenith
i maybe have an idea, but im not too sure
pure dew
I'm trying to emulate sh behavior as best I can, while making easy to use on discord
brisk zenith
basically, why not make the bot run the actual commands from a shell in an isolated environment, where the only programs it has access to are ones you write (like, custom scripts for echo and shutdown etc that it runs inside of the isolated env)
probably a terrible explanation
pure dew
nonono
I don't want it to run shell commands
its all in discord, but with shell syntax
brisk zenith
i cant explain what i mean haha
pure dew
I have a command system in place (d.py commands ext)
instead of calling shell scripts, it finds a command in that command system and calls it
pure dew
my thoughts exactly
willow river
Noob question of the day, why I never see anyone being redirected to python official howto ?
unique shoal
why's your noob question of the day in #esoteric-python?
willow river
Because the noob in the me of today didn't knew what's up with this channel so he tried it
unique shoal
it does have a description
unique shoal
that sounds like maybe a #python-discussion question? #community-meta maybe, if it's a comment on the server as a whole
willow river
True true
night quarryBOT
Doc:
docs Lookup documentation for Python symbols.
Information:
server Returns an embed full of
user Returns info about a user.
Reddit:
reddit View the top posts from various subreddits.
Site:
site Commands for getting info about our website.
Snakes:
snakes Commands from our first code jam.
Utils:
pep Fetches information about a PEP and sends it to the channel.
No Category:
help Shows this message.
Type !help command for more info on a command.
You can also type !help category for more info on a category.
polar vector
!server
night quarryBOT
Server information
Created: 1 year, 7 months and 13 days ago
Voice region: vip-amsterdam
Features: VIP_REGIONS, VANITY_URL, INVITE_SPLASH
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vague gust
Please use commands for the bot in #bot-commands
viral bough
does this count
cunning wave
thats just a pep8 violation nothing weird
pure dew
oof
viral bough
which bit violates pep?
brisk zenith
>>> __builtins__.__loader__.get_source(__builtins__)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<frozen importlib._bootstrap>", line 235, in _requires_builtin_wrapper
ImportError: <module 'builtins' (built-in)> is not a built-in module
>>>
python explain
cunning wave
if builtins had a reference to itself it would have to circulary load itself wouldnt it? @brisk zenith
cunning wave
who knows
arctic bridge
# wildfire.py - Self-modifying Python bytecode: w.i.l.d.f.i.r.e
# Copyright (C) 2013 Axel "0vercl0k" Souchet - http://www.twitter.com/0vercl0k
sounds unhealthy
thorny granite
@brisk zenith sys is the only other one
sick hound
__main__
>>> import __main__
>>> __main__
<module '__main__' (built-in)>
>>> ```>>> import __main__
>>> dir(__main__)
['__annotations__', '__builtins__', '__doc__', '__loader__', '__main__', '__name__', '__package__', '__spec__']
>>> x = 5
>>> dir(__main__)
['__annotations__', '__builtins__', '__doc__', '__loader__', '__main__', '__name__', '__package__', '__spec__', 'x']
>>> __main__.x
5
>>> __main__.x = 42
>>> x
42
>>> ```@brisk zenith
thorny granite
thats something
well it looks like every c module is considered built-in so nvm
oh wait no
yea builtins and sys are special
sick hound
>>> import _socket
>>> _socket
<module '_socket' from 'C:\\Users\\Aaay\\AppData\\Local\\Programs\\Python\\Python36\\DLLs\\_socket.pyd'>```im too confused
brisk zenith
_sitebuiltins is a good one too
sick hound
>>> xd
Use xd() or xd() to exit```>>> import pydoc
>>> pydoc.help = lambda *args, **kwargs: print('lol')
>>> help()
lol
>>> ```is that top one _sitebuiltins.Quitter?
hmm
i wonder if it's somehow possible to capture the return value of exit()
i believe exit(n) returns (n,)
where n defaults to Noen
yes, Noen apparently.
sick hound
the top one is _sitebuiltins.Quitter
also exit() doesn't return anything, it closes stdin and raises SystemExit
why would it return a tuple
_io doesn't know what its name is
>>> import _io
>>> _io
<module 'io' (built-in)>```>>> import _io
>>> _io
<module 'io' (built-in)>
>>> _io.StringIO
<class '_io.StringIO'>: # extra colon to fix syntax highlighting
>>> _io.StringIO.__module__
'_io'
>>> _io
<module 'io' (built-in)>
>>> _io.__name__
'io'
>>> ```>>> __builtins__.__loader__.get_source(_io)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<frozen importlib._bootstrap>", line 235, in _requires_builtin_wrapper
ImportError: <module 'io' (built-in)> is not a built-in module```>>> print
<built-in function print>
>>> del print
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'print' is not defined
>>> ```haha
sick hound
>>> import sys
>>> del sys.modules['__main__']
>>> sys
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'sys' is not defined
>>> __builtins__
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name '__builtins__' is not defined
>>> print
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'print' is not defined
>>> ```oh damn :D
sick hound
>>> import __main__
>>> __main__
<module '__main__'>
>>> ``` (after eventually getting `__builtins__` back)__main__ exists again but it isn't built in anymore
sick hound
>>> import sys
>>> import os
>>> sys
<module 'sys' (built-in)>
>>> os
<module 'os' from 'C:\\Users\\Aaay\\AppData\\Local\\Programs\\Python\\Python36\\lib\\os.py'>
>>> os.__loader__ = sys.__loader__
>>> os
<module 'os' (built-in)>
>>> ```makes sense
sick hound
if you set the __loader__ of a module to the builtin module loader it becomes a "built in" module
brisk zenith
yup
sick hound
>>> import sys
>>> sys.__loader__ = sys
>>> sys
<module 'sys' (<class '_frozen_importlib.BuiltinImporter'>)>
>>> ```lolwat
sick hound
# waat.py
__loader__ = __import__('sys').__loader__
>>> import waat
>>> waat
<module 'waat' (built-in)>
>>> ```load things
pure dew
oh, it just defines how to import a module?
sick hound
it's complicated
but if you set the __loader__ of a module
that doesn't change how the module is loaded
but it does change how the module thinks it was loaded
any module that has a __loader__ of <class '_frozen_importlib.BuiltinImporter'> (like sys) will appear as built in
>>> import os, sys
>>> os
<module 'os' from 'C:\\Users\\Aaay\\AppData\\Local\\Programs\\Python\\Python36\\lib\\os.py'>
>>> os.__loader__ = sys.__loader__
>>> os
<module 'os' (built-in)>
>>> ```what can you do with a custom loader?
sick hound
>>> import hello
>>> hello
42
>>> ``` basically anythingoof
>>> import discord
>>> import sys
>>> discord.__loader__ = sys.__loader__
>>> __loader__.get_code(discord)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<frozen importlib._bootstrap>", line 235, in _requires_builtin_wrapper
ImportError: <module 'discord' (built-in)> is not a built-in module
>>> import also_also_also_also_also_sys
>>> also_also_also_also_also_sys
<module 'sys' (built-in)>
>>> ```lol
sick hound
>>> import str_helloworld
>>> str_helloworld
'helloworld'
>>> ```>>> import exit
# (exited)```The import path is a list of locations that may name file system paths or zip files. It can also be extended to search for any locatable resource, such as those identified by URLs.
🤔 dynamic module loading?
no more pip install?
sick hound
maybe
pine edge
pip is pretty fast for a package manager
i wouldn't mind a 40 mb download to start an app i rarely use
pure dew
i mean download and compiling
either there'd have to be a system call to sudo (idk how that'd go over) or we just install the packages locally
pine edge
pip has local install indeed
cunning wave
so i just opened python and without me doing anything this happened
brisk zenith
lmao
tropic gulch
intentional name leak?
tropic gulch
I don't remember having seen it ¯_(ツ)_/¯
brisk zenith
oh fair.
knotty bronze
since this is #esoteric-python how you add a command, or making one in visual studio code? please come with examples
cunning wave
this is not related to #esoteric-python which you would know in case you read the channel topics (why do people never read channel topics) if you have questions about a specific tool go to #tools-and-devops
knotty bronze
............
sick hound
novel vine
@cunning wave if your python did that without you intentionally fucking with it check your HDD health
novel vine
Was just thinking random things like that could be a corruption issue & sectors going bad
novel vine
Probably isn’t but could be shrug
mystic ether
🏌
brisk zenith
⛳
viral hedge
last bramble
4
brisk zenith
for
patent sedge
Aint nobody talking. sad stuff. 😦
lilac sable
#!/usr/bin/python
import re,os,cgi;d,h=os.listdir('.'),'<a href=wy?';p,e,g,s=tuple(map(cgi.parse(
).get,'pegs'));f=lambda s:reduce(lambda s,(r,q):re.sub('(?m)'+r,q,s),(('\r','')
,('([A-Z][a-z]+){2,}',lambda m:('%s'+h+'e=%s>?</a>',h+'g=%s>%s</a>')[m.group(0)
in d]%((m.group(0),)*2)),('^{{$','<ul>'),('^# ','<li>'),('^}}$','</ul>'),('(ht\
tp:[^<>"\s]+)',h[:-3]+r'\1>\1</a>'),('\n\n','<p>')),s);o,g=lambda y:(y in d and
cgi.escape(open(y).read()))or'',(g or p and[open(p[0].strip('./'),'w').write(s[
0])or p[0]]or[0])[0];print'Content-Type:text/html\n\n'+(s and', '.join([f(n)for
n in d if s[0]in o(n)])or'')+(e and'<form action=wy?p=%s method=POST><textarea\
name=s rows=8 cols=50>%s</textarea><input type=submit></form>'%(e[0],o(e[0]))
or'')+(g and'<h1>%ss=%s>%s</a>,%se=%s>edit</a></h1>'%(h,g,g,h,g)+f(o(g))or'')
11 line wiki in Python
dense spire
jesus :D
sick hound
discord uh
lilac sable
okay no errors in Python 2
lilac sable
oh lol yeah xD
lusty vector
Okay. So @unique shoal and @worthy pollen , this is what I was trying to do with hist question and HyperTurtles code-bit:
''.join([str(f'{string.ascii_lowercase} '.index(i)+1) if i !=' ' else ' ' for i in mystring])
Some kind of golfing I guess
worthy pollen
you could drop my f-string & not sure how useful the .join and str are...
brisk zenith
you can do if not i
worthy pollen
or i.isalpha()
pure dew
@sick hound that r refers to a raw string, that highlighting is correct
sick hound
Must be just very weird placement
sick hound
look at the letter right before the r and then the character right before that
pure dew
Yes, the highlighter just parses the source, it doesnt know the context
tepid glacier
So I've written a thing
def snail(a):
o=[]
while a:
o+=a.pop(0)+[s.pop()for s in a[:-1]]
if not a:break
o+=a.pop()[::-1]+[s.pop(0)for s in a[::-1]]
return o
Is it possible to golf this further?
(The only restriction is the function name)
def snail(a):
o=[]
while a:
o+=a.pop(0)+[s.pop()for s in a[:-1]]
if a:o+=a.pop()[::-1]+[s.pop(0)for s in a[::-1]]
return o
changed it up a bit
brisk zenith
looks like codewars to me
wind maple
I guess this is cheating but
>>> def snail(a):
... while a:
... yield from a.pop(0)
... a = list(zip(*a))[::-1]```@brisk zenith Yeah, it's a codewars challenge
brisk zenith
why not ...+s[::-1] rather than [s.pop(0)for s in a[::-1]]..? i swear they're the same..
i'm so tired.. lmao
tepid glacier
Submitted it a few minutes ago and saw all these good answers 
sick hound
if it's the question i'm thinking of the top answer blew my damn mind
when i saw it
hadn't been thinking of it as a recursion problem at all lol
pure dew
post a link pls
wind maple
oh yeah you could do that recursively
>>> def snail(a):
... return a[0] + snail(list(map(list, zip(*a[1:])))[::-1]) if a else []```
frosty wyvern
pythonic 
wind maple
v
tropic gulch
might make it a lambda for further golf
also a if x else b can be written as [b,a][x==0]. Depends on the terms and whether whitespace is counted what is shorter
tepid glacier
@sick hound Yeah, this solution was pretty impressive
Assuming you're referencing this one
frosty wyvern
My eyes are bleeding
tropic gulch
frosty wyvern
I'm so bad at coding challenges, I really need to brush up
sick hound
that's it yee
for some reason i hadn't even realized before seeing it that zip is transposition
close enough, ava :p also neat turns out you were actually there when i asked about this in tcd forever ago
quick oracle
How can I paste formatted code into discord?
tropic gulch
!t codeblock
night quarryBOT
quick oracle
Thanks.
rare juniper
@brisk zenith
class OhFuck:
def __eq__(self, other):
self = self.__class__()
return super().__eq__(other)
def thing_is_thing(thing):
if thing != thing:
return False
if thing == thing:
return True
print(thing_is_thing(OhFuck)) # -> True
print(thing_is_thing(OhFuck())) # -> True
print(thing_is_thing(OhFuck().__eq__('WaitWhatIsOther'))) # -> True
print(thing_is_thing(OhFuck().__eq__(OhFuck()))) # -> True```How exactly did you mean for this to work?
whole kiln
brisk zenith
huh, one sec lemme get on my computer
rare juniper
@whole kiln Holy fucking SHIT.
brisk zenith
yeah that's interpreter optimisation there i think
I mean really, you could tell __eq__ to always return False
brisk zenith
:^)
but as for is, that cannot be.. hold on, hold my water-flavoured transparent beer
prepare yourself for some "what the fuck" code
cause i'm writing some
brisk zenith
@rare juniper i made this. it's technically cheating, but it's still interesting: https://paste.pydis.com/aqevuqeduv.py :D
rare juniper
oh my god
brisk zenith
if i could be bothered to put more effort into it, i'd make it actually change the value of it after an is operation
rare juniper
Is there any way around using a decorator? On that specific function, at least.
brisk zenith
not really, other than editing the function directly which works too
except all the code would be moved from the decorator function to the global scope
but all that code does is change the internal bytecode of the function, so thing is thing just becomes False.
brisk zenith
haha
i don't 😎
the bytecode is changed from this:
2 0 LOAD_FAST 0 (thing)
2 LOAD_FAST 0 (thing)
4 COMPARE_OP 8 (is)
6 RETURN_VALUE
to this:
2 0 LOAD_CONST 1 (False)
2 RETURN_VALUE
for the decorated example function, that is
but it'll work for any case of thing is thing
it's pretty much an internal version of editing the function so that it turns from
def thing_is_thing(thing):
return thing is thing```
into:
```py
def thing_is_thing(thing):
return False
and stuff like ```py
def thing_is_thing(thing):
if thing is thing:
print("yes hello")
would become
```py
def thing_is_thing(thing):
if False:
print("yes hello")
if False 😰
brisk zenith
but i could change my decorator function so that it turns:
return thing is thing
into
thing = "hello"
return thing
so then technically, py thing is thing is thing
would be.. false and true
at the same time
oh boy
rare juniper
quantum computing breakthrough?
rare juniper
damn!
brisk zenith
i mean obviously it wouldn't be False and True at the same time
but it'd be fucked, is what i'm saying :D
rare juniper
As long as it's fucked that's all that really matters.
brisk zenith
or maybe it is quantum mechanics and we introduce a Maybe
rare juniper
... This started as me trying to use python code as an analogy in a philosophy essay
but I got side-tracked
brisk zenith
my life is a side-track honestly
ooh
i just had a fun idea
def fuck(thing):
other = thing
if thing is not thing:
return True
if other is not thing:
return False
return True
i could make this return False
i think that's right anyways
eh, effort lmao
i'll work on it if i ever feel bored again :D
muted basin
great name
brisk zenith
hell yeah
pure dew
wheres the place to talk about other-langauge extensions (C, Rust, C++, etc)?
brisk zenith
off-topic
we used to have a channel for that, but it lives no longer
(i think it's archived)
pine lantern
Ho together. I have one other question. hope to be in right channel. How can i get with Python3 the newest Video of an Youtube Channel.
unique shoal
this is not the right channel for that
I am not sure what it is about this channel name that brings everyone here
make sure to read channel descriptions please, everyone
pine lantern
Sorry then. which channel is right? My english is not so gut and havent know what berely means @unique shoal
unique shoal
any of the regular help channels
pine lantern
Oh havent seen them. Thanks and sorry for that. Shame on me 😃
willow inlet
🏿 🏿 🏿 🏿 🏿 🏿 🏿 🏿
🏿 🏿 🏽 🏽 🏽 🏽 🏿 🏿
🏽 🏽 🏽 🏽 🏽 🏽 🏽 🏽
🏽 ⬜ ⬜ 🏽 🏽 ⬜ ⬜ 🏽
🏽 🏽 🏽 🏽 🏽 🏽 🏽 🏽
🏽 🏽 🏿 🏽 🏽 🏿 🏽 🏽
🏽 🏽 🏿 🏿 🏿 🏿 🏽 🏽
🏽 🏽 🏽 🏽 🏽 🏽 🏽 🏽
Copy and paste on 5 other Discords or else Herobrine will hack your Minecraft account
pure dew
-_-
fading fractal
Is this chat just for any other language?
sick hound
@willow inlet dont shitpost here
and @fading fractal not necessarily, read the channel topic
fading fractal
oh so, there is no channel for other langs
sick hound
nope, feel free to discuss other langs in an offtopic channel though
fading fractal
Aight
novel vine
This is like code golf / python hackery
pure dew
abuse of f-strings?
worthy pollen
>>> people = int(input('people: '))
>>> total_slices = int(input('no. of pizzas: '))*8
>>> share, left = divmod(total_slices,people)
>>> f'{people - left} get {share} slices. {left} will get {share +1}'.split(' 0 ')[0]```pizza problem without conditionals
brisk zenith
oh nifty
broken agate
there's a pizza problem?
versed ginkgo
any good code jams?
sick hound
ask #python-discussion or an off-topic channel
(this one isn't a general off-topic channel! check its description)
feral spade
Hello
How are you guys
😃
could someone recommend me some good lambda code samples, I still don't understand its use-case, I know it's good in functional programming, but need a little more to understand it.
frosty wyvern
A lambda is pretty much just an inline anonymous function, you can pass it around like a value/regular function
unique shoal
this seems like a question better suited to an actual help channel or #python-discussion
#esoteric-python is a place for not using lambdas properly
cunning wave
It's about squeezing out the last use cases of lambdas
brisk zenith
lambda: lambda: ...
sick hound
this is for bad lambda code samples
(lambda f:f(f))(lambda y:lambda f:lambda:f(y(y)(f)))(lambda f:lambda n:f()(n-1)*n if n else 1)() like this implementation of factorial
frosty wyvern
What's wrong with that? It's perfectly readable
sick hound
._.
feral spade
what's that, Valyrian ?
feral spade
definately looks like an old writing from some ancient runes
frosty wyvern
(I'm kidding)
feral spade
lol
sick hound
That is a weird obfuscated implementation of factorial
frosty wyvern
hm im curious what bytecode it generates lets seee
sick hound
1 0 LOAD_CONST 0 (<code object <lambda> at 0x00000245DE6C80C0, file "<dis>", line 1>)
2 LOAD_CONST 1 ('<lambda>')
4 MAKE_FUNCTION 0
6 LOAD_CONST 2 (<code object <lambda> at 0x00000245DE6CE270, file "<dis>", line 1>)
8 LOAD_CONST 1 ('<lambda>')
10 MAKE_FUNCTION 0
12 CALL_FUNCTION 1
14 LOAD_CONST 3 (<code object <lambda> at 0x00000245DE6CE420, file "<dis>", line 1>)
16 LOAD_CONST 1 ('<lambda>')
18 MAKE_FUNCTION 0
20 CALL_FUNCTION 1
22 CALL_FUNCTION 0
24 RETURN_VALUE```: )
sick hound
something like (lambda x: stuff) just becomes load code object, load '<lambda>', make function
the code object has whatever's in the lambda
feral spade
thanks for the code samples 😃
brisk zenith
oh no, you don't want those code samples
those are baaad samples
intentionally for fucking your mind
feral spade
🤔
unique shoal
like actually seriously, don't learn from this channel
feral spade
oh ...
unique shoal
that's why I said you should take your question elsewhere
this is very specifically a channel for using pieces of Python improperly
sick hound
this channel is for weirdness and obfuscation
pure dew
that lambda mess is just a y combinator
making a recursive function out of a non-recursive function
brisk zenith
yeah i figured that.
pure dew
its much simpler in a functional programming language
brisk zenith
i assume because python's lambdas only allow for a single statement?
unique shoal
expression
unique shoal
statements and expressions are opposites! you gotta use the right one!
brisk zenith
(please do enlighten me)
brisk zenith
oh okay
cunning wave
1+1 yields 2
brisk zenith
functioncall() yields the return value does it not 👀
unique shoal
a statement is a syntactic construct that is incapable of yielding a value
cunning wave
return doesnt count as yielding
brisk zenith
okay i understand now :D
unique shoal
wait Nix are you saying functioncall() is a statement?
functioncall() is not a statement
cunning wave
huh
unique shoal
that's an expression
unique shoal
because you can do this if functioncall():
cunning wave
function calls are statements
brisk zenith
no surely they're not 🤔
cunning wave
its an expression statement
jesus christ
but its under simple statements in the docs
so its a statement
right? @unique shoal
unique shoal
technically speaking
unique shoal
but referring to a function call as a statement is a weird way to address it
cunning wave
python allows me to
unique shoal
a bare function call on a line without anything else is an expression that is evaluated as part of an expression statement
brisk zenith
now to actually be able to remember which one is which :D
unique shoal
so functioncall() isn't inherently a statement, but it's a statement if it's the only thing on the line
unique shoal
don't confuse beginners with this 
cunning wave
beginners dont ask about statemetns and expressiosn
brisk zenith
hence why i just did?
unique shoal
I fill people in on the details of statements and expressions all the time
cunning wave
i dont think you are a beginner
well if you tell them the details tell them about the quantum statemetns lucy
if they want to know the details
¯_(ツ)_/¯
unique shoal
the technicalities about expression statements should not be a point of contention raised outside of this channel by anyone that knows what they're doing
leave the beginners alone!
cunning wave
this is gonna be my new favourite thing to confuse people with
brisk zenith
same here
brisk zenith
guessing_game = (lambda number: print("Guess the number!") or (list((lambda itertools = __import__("itertools"): itertools.takewhile(lambda guess: ((not ((guess[1:] if guess.startswith("-") else guess).isnumeric() or print("Enter an integer!"))) or int(guess) != number and ((int(guess) > number and print("Guess lower!")) or (int(guess) < number and print("Guess higher!")) or True)), (input("--> ") for _ in itertools.count())))()) or print("First try! Damn!")) and print("Well done!"))
a fully-featured guessing game function in one line (without semicolons ew)
>>> guessing_game(7)
Guess the number!
--> 6
Guess higher!
--> 8
Guess lower!
--> d
Enter an integer!
--> 7
Well done!
>>>
>>> guessing_game(4)
Guess the number!
--> 4
First try! Damn!
>>>
can probably be simplified/compressed but i'm not too bothered about that haha
cunning wave
we should put stuff like that in the next code jam challenge
brisk zenith
you mean the obfuscation?
cunning wave
that type of one liner lambda obfuscation yes
brisk zenith
ooh i would love to help with that.
do you like my nick now?
it's the same as yours.
cunning wave
hm
but other people got weird praise the ... statement names
because they dont get the meme
😦
brisk zenith
sad
cunning wave
yup
pure dew
u mean code golf
brisk zenith
hm?
cunning wave
no i mean this specfic type
cunning wave
these specific lambda one liners
brisk zenith
it's just one single statement.
brisk zenith
thank you nix
cunning wave
i mena technically most statements except of the quantum ones have quantum statements in them
dont they?
pure dew
oh
cunning wave
because an expression which might be a statement
cant contain another expression
so
brisk zenith
yeah
cunning wave
its doesnt contain quantum expressions
unique shoal
what?
cunning wave
statements consist of expressions
unique shoal
expression statements consist of expressions
cunning wave
but expressioon statements can also be seen as expressions
tropic gulch
no
cunning wave
yes they can
a function call can be a statement or an expression
we talked about that before
unique shoal
expression statements are expressions that are being read as statements by the language
because they aren't a component of any other syntactically defined statement
tropic gulch
a function call is always an expression
unique shoal
a function call is an expression.
tropic gulch
a statement can be e.g. an if or a while or an expression
cunning wave
unique shoal
a function call that is not part of any other statement is part of an expression statement
cunning wave
this page says it can be a statement
pure dew
this is why quantum computers are so expensive
cunning wave
no
unique shoal
we can't make quantum computers because Nix keeps confusing everyone working on them
brisk zenith
so are quantum statements a thing
tropic gulch
calls are expressions. they can be used as statements (not are statements) because one possible kind of statement is a plain expression
cunning wave
and expression statement is a statement which consists of something which returns a not meaningful thing
like None
pure dew
not really
cunning wave
that is what the page says
pure dew
it could return anything
cunning wave
Expression statements are used (mostly interactively) to compute and write a value, or (usually) to call a procedure (a function that returns no meaningful result; in Python, procedures return the value None).
pure dew
but if you disregard the result tho..
cunning wave
so
before we look at the rest of the code we arent sure if the expression is just an expression or an expression statement
tropic gulch
that is like saying you are a car because you can sit inside one and drive
!otname suggest nix-is-a-car
cunning wave
no u
pure dew
if it drives like a car, it must be a car, right?
cunning wave
an expression statement is a statement only consisting of one expression with return values you dont use
so
if i am inside a car
i am an expression inside another expression
does that still allow me to be an expression stmnt?
at some point we should just compile the grammar with pgen and test ourselves
unique shoal
there's nothing to test for, this is just an argument between slightly different and equally valid abstractions of what an expression itself is an expression statement
which is not really an argument worth having
unique shoal
not in this server, friend
tropic gulch
let's have an argument whether we should have that argument
cunning wave
tropic gulch
gets out
unique shoal
aiight, no more of this in this channel
pure dew
speaking of recursive arguments:
item = (lambda: True).__le__
while hasattr(item, "__le__"):
item = item.__le__
print(item)
speaking of recursive arguments:
def thonk(arg=[]):
arg.append(arg)
thonk()
now tryint pprint on that
cunning wave
>>> class X:
... value = False
...
>>> def func(test=X()):
... print(test.value)
... test.value = True
...
>>> func()
False
>>> func()
True
>>>
other fun python thing
brisk zenith
>>> pprint.pprint(arg)
[<Recursion on list with id=140380905456904>]
>>>
nix that's obvious
cunning wave
cpython actually caches the istances of default args
that means both function rely on the same object as default arg
cunning wave
i wonder if there is a project out there using this
brisk zenith
using what?
brisk zenith
well yeah, probably.
brisk zenith
i've used it before. i can't remember how, but i have.
cunning wave
👀
sick hound
Just put linux on a chromebook specifically because my other laptop is really bad.. and i needed an on the go python.. station.?
unique shoal
what's that got to do with #esoteric-python ?
cunning wave
why is this related to #esoteric-python ?
pure dew
because the chromebook can barely run python??
viral hedge
def create_script(n):
s = ""
for x in range(n):
s += f"print({x})\n"
return s
exec(create_script(5))```
Ey it counts from 0 to n woo py lambda x : exec("\n".join(f"print({i})" for i in range(x)))
pure dew
heresy
pure dew
I'm asking this in here because it's something i don't think you would ever want to do, but I wonder if it's possible
Is it possible to "save a slice" to use later without storing the actual indices?
Ex:
slice_decl = [3:5]
substr = ("this is a test string")[slice_decl]
Obviously that wouldn't work, but is something similar possible? (I can store the actual indices just as easily, but I'm curious)
brisk zenith
@pure dew ```py
x = slice(3, 5)
"hello"[x]
'lo'
yeah it's pretty simple, no problem.
wicked moat
Is there a site where I can practice creating classes?
pure dew
@wicked moat https://repl.it search for python3
wicked moat
thks
wicked moat
I understand the following
a=1
b=2
a=b
b=a
a=2
b=2
but how can this
a=1
b=2
a,b=b,a
a=2
b=1
work?
cunning wave
define work
wicked moat
aaaa, nice
whole kiln
you're unpacking it to the same variable names, but in a different order
wicked moat
I understand now.
whole kiln
so they get reassigned
wicked moat
Thks, didnt think of it as a tuple.
unique shoal
( #esoteric-python probably isn't the best place for general help questions, @wicked moat. use a regular help channel )
wicked moat
sry, will do in future
brisk zenith
:D
arctic bridge
🔥
last bramble
these pins
dense spire
if someone asks what this channel is for, just tell'em to check the pins
wind maple
Why is the meta class barely python 🤔
dense spire
because it hacks a c++ feature into python in a fun way? you find yourself doing this a lot or something?
also it's weird. shouldn't it either be cout or have the arrows pointing the other way?
or is that the point? I don't know. I'm only in this channel because I barely know python.
that's what it's for, right?
sick hound
Hello, don't know if it is a right section. I'm building a shared library of Python but my app still needs a lib folder of python libs (.pyc files). How can I prevent it?
I mean, can I somehow build it straight into a shared library?
sick hound
I'm not talking about DLL file. I mean a lib folder.
PC/pyconfig.h - Line 83
define PYTHONPATH ".\DLLs;.\lib;.\lib\plat-win;.\lib\lib-tk"
pure dew
more explanation would help
little patrol
short dagger
How to make your CS teacher who only knows C# sweat when you're asked to swap two variables.
a,b=b,a
sick hound
How to make people who know what #esoteric-python is used for sweat
misuse(barely_python)
cunning wave
😰
pure dew
@sick hound nah its barely_python.__misuse__(barely_python)
sick hound
barely_python.__misuse__ already has an instance
>>> class Foo: x = 5
...
>>> foo = Foo()
>>> getattr(foo, 'x')
5
>>> foo.__getattribute__('x')
5
>>> foo.__class__.__getattribute__(foo, 'x')
5
>>> foo.__getattribute__(foo, 'x')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: expected 1 arguments, got 2```@pure dew
sick hound
good name, sadly
brisk zenith
i guess that'll do, yeah.
pure dew
aww rip name
unique shoal
constantly redirecting people is wearing thin on my patience, so we're gonna try this out
brisk zenith
yup. seems like a lot of people struggle to realise that "barely" is not synonymous with "completely unrelated to" :D
pure dew
well, those people also seem to have missed a build steps when compiling their kernel
last bramble
(not to derail the topic, but some people may not know what esoteric means and they may also not read the channel topic)
unique shoal
that's part of why esoteric was picked. if they don't know what it means, they are less likely to come here
sick hound
i feel like if they dont know what it means itll prompt them to read the topic
brisk zenith
but it seems like some people don't even know what "barely-python" means :^)
arctic bridge
In an __init__.py: ```python
import sys; sys.modules['os'] = sys.modules['sys'] = None
Next level: ```python
for m in sys.modules.keys():
if not m.startswith('__') and '.' not in m:
sys.modules[m] = None
Hehehe: ```powershell
for m in sys.modules.keys():
... if not m.startswith('__') and '.' not in m:
... sys.modules[m] = None
...
import os
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: import of os halted; None in sys.modules
oof
arctic bridge
lambda x: __import__('arpreq').arpreq(x)```I am pursuing ever uglier hacks in my pursuit of shorter code lol
frosty wyvern
pythonic? never heard of it
arctic bridge
That replaces this:
def _arpreq_ip(ip):
import arpreq
return arpreq.arpreq(ip)
lambda x: __import__('scapy').layers.l2.getmacbyip(x)```"PEP 8: Do not assign a lambda expression, use a def"
Hah what's pep 8
frosty wyvern
pep8? is that a breed of 
arctic bridge
Accessing attributes doesn't work in 2.7 tho 
>>> _scapy_ip = lambda x: __import__('scapy').layers.l2.getmacbyip(x)
>>> _scapy_ip('10.0.0.1')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 1, in <lambda>
AttributeError: 'module' object has no attribute 'layers'
Oh
Just had to change it to scapy.layers
t = __import__('scapy.layers').layers.l2.getmacbyip('10.0.0.1')
But that still doesn't work in windows
have to add l2 as well
probably some internal importing stuffs
For instance, import scapy.all on windows takes 4-5 seconds, while on Linux it takes less than a second
arctic bridge
Replacing spaces with tabs reduced file size by 2KB
@frosty wyvern First contest: ugliest code wins
Submissions should be of reasonable length, but no points are given for being shorter
frosty wyvern
Let's make it ugliest code for a common operation/algorithm/pattern
arctic bridge
Perhaps to solve a specified task?
frosty wyvern
Ugliest fibonacci?
viral hedge
for n in (0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765, 10946, 17711, 28657, 46368, 75025, 121393, 196418, 317811):
print(n)```Nah, too basic
viral hedge
But it's ugly.
potent tide
(lambda _:[(lambda n:__import__('functools').reduce(lambda x,n:[x[1],x[0]+x[1]], range(n),[0,1])[0])(i) for i in range(_)])(int(input('whatever: ')))``` Here you go buddyThat's not really all that ugly though
Like, sure, it's compressed
But it doesn't physically pain me to read
If I have to look away because it's so bad, then it wins
potent tide
exec(''.join(chr(ord(i)-1000) for i in "јњёіќААєщѕъьщЈчТуАєщѕъьщЈіТччёѕјїњќччАЏюѝіыќїїєћЏБЖњэьѝыэАєщѕъьщЈѠДіТуѠуЙхДѠуИхГѠуЙххДЈњщіяэАіБДуИДЙхБуИхБАёБЈюїњЈёЈёіЈњщіяэАчБхБАёіќАёіјѝќАЏџѐщќэўэњТЈЏББББ"))```/shrug
frosty wyvern
vestal solstice
congrats on improving the name
frosty wyvern
Well since some people expressed some interest in the idea of having little shitty code-golf/crapcode/ugly code challenges, which I think could be fun, let's put our heads together and think of what could be a fun first challenge
frosty wyvern
ENTRIES ARCHIVED AT: https://github.com/shawnmcla/python-discord-challenges-archive/tree/master/submissions/challenge1
Challenge #1
Reverse Polish notation evaluator Code Golf
https://en.wikipedia.org/wiki/Reverse_Polish_notation
Requirements: A function that takes in a (valid) expression as a string and returns the correct answer
Goal: Shortest working code, with honourable mentions for creativity :)
Restrictions:
[*] No imports! (not even standard library)
[*] No lists! (other sequence types are okay)
Example input and outputs:
In: "2 3 + 1 -"
Out: 4
In: "15 7 1 1 + − ÷ 3 × 2 1 1 + + −"
Out: 5
You can enter more than one solution. Feel free to look around for inspiration but no blatant ripoffs.
Feel free to collaborate since there's no real prize other than knowing you wrote some horrible code and that Pep8 weeps in the distance.
Share code directly in chat or via a hosting service if it's too long (e.g. gist). Tag your post with #challenge1 so we can easily search through the chat!
Note: Submissions will be archived on a public GitHub repository so if you enter you give us permission to publish the code :-*
pin pin pinnerino please? 😄
@dense spire senpai
viral hedge
#295490247255523338 maybe for "normal" pythoners to do as well for fun
frosty wyvern
oh there's a challenges channel
devout kite
!s enumerate
night quarryBOT
![site|s]
Commands for getting info about our website.
Commands:
faq Info about the site's FAQ page.
help Info about the site's Getting Help page.
home Info about the website itself.
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Type !s command for more info on a command.
You can also type !s category for more info on a category.
Workin on an awful code
dense spire
it's !t, wrongend
devout kite
!tag enumerate
night quarryBOT
devout kite
Thanks
dense spire
and since you're taking command of this, I've given you pin permissions, @frosty wyvern
only in this channel.
frosty wyvern
^_^ Thank youuu
frosty wyvern
Y'know, whatever I can do to give my existence a semblance of meaning.
dense spire
or did I mess up the permissions?
frosty wyvern
hmm cant pin
dense spire
there may need to be a role in play
frosty wyvern
frosty wyvern
dense spire
look at you mister manager
frosty wyvern
Now hopefully people participate. I probably concocted a challenge that's a little too hard for a first
dense spire
actually I get the feeling a lot of people who are drawn to this channel don't mind a challenge
frosty wyvern
True. I've seen some crazy ish in here
frosty wyvern
anywho thanks boss c:
dense spire
cunning wave
I am surprised, what he posted was one of the first things I thought of as challenge
frosty wyvern
cunning wave
Is .split allowed?
viral hedge
That would return a list, whiiich is not allowed?
frosty wyvern
HMMM
Good catch.
I would say yes but you can't store the list itself
You can split and access
cunning wave
So I can for loop it
dense spire
:D
frosty wyvern
You can loop over another type of sequence tho, like a string 😛
cunning wave
:(
frosty wyvern
I can't be lenient with restrictions
dense spire
if you loop over a dictionary aren't you technically looping over a list?
cunning wave
I should just golf a list implementation myself
plain pawn
meta comment: I think pinning solutions makes it difficult to find the challenge
frosty wyvern
Yeah these are just random pins from before
plain pawn
derp, didn't look at the timestamps 
dense spire
I'd be okay with unpinning earlier random pins, and keeping pins the exclusive domain of shawn the event handler
your call, shawn
if you wanna use it as a sort of bulletin board, or pin winners or something? that's cool.
cunning wave
integration into website when
frosty wyvern
I don't mind, I like that we can have a little archive of notable shitty code whether challenge related or not
plain pawn
Maybe a subscribeable announcement channel for the challenges themselves? I like the winners/notable code but then we're back to my original comment
Or, the other way around, a star board for winners/notable code
viral hedge
I'd say create a repo, and keep answers to that
cunning wave
Create a hacktoberfest repo
If we have weekly challenges everyone can make enough prs to it to get his shirt
dense spire
I wanna try to keep this a bit small, but keep the ideas flowing
more channels and subscriptions and repos are not right at the top of my list. maybe if this really takes off.
pine edge
carnal sin
>>> from ctypes import pythonapi, c_void_p, c_ssize_t
>>> a = (1,)
>>> pythonapi.PyTuple_SetItem(c_void_p(id(a)),c_ssize_t(0),c_void_p(id(a)))
>>> a
((...),)
note: this segfaults python2
brisk zenith
segfaults are hot.
calm rampart
I once found a segfault bug in python 3
I was using the get all objects function from gc
and there's apparently some temporary tuple object that's used for argument handling, that gets its slots blanked out to NULL when not in use
and my code ended up accessing that
brisk zenith
yup :D
brisk zenith
class SingletonMetaclass(type):
def __new__(cls, name, parents, attrs):
instance_attr = f"_{name}__INSTANCE"
if instance_attr in attrs:
raise RuntimeError(
"Singleton classes must not fuck "
"with the '__INSTANCE' attribute."
)
# Create the singleton class and assign its instance
singleton = super().__new__(cls, name, parents, attrs)
setattr(singleton, instance_attr, object())
return singleton
class Singleton(metaclass=SingletonMetaclass):
def __new__(cls):
return cls.__INSTANCE
i'm tired :D
tropic gulch
oof, no imports sounds reasonable, but no lists???
Half of Python is built upon lists
I'll have to invest a longer thonk on this... 
brisk zenith
this challenge will be interesting
despite it being a golfing challenge, i'm not gonna golf it
i just wanna be creative :D
brisk zenith
i like it but.. i have different interests atm
wind maple
oof no .split()
cunning wave
yeah 😦
frosty wyvern
You can do without golf, it's already challenging enough 😛
brisk zenith
¯_(ツ)_/¯
normal people complain about having too many parameters on their function head
fuck you, i'm defining a class in mine :^)
oh dear.
left remnant
what was the challenge
sick hound
I might consider donating a prize if enough people join these challenges
crisp pendant
@frosty wyvern wouldn't "2 3 + 1 -" evaluate to -4, or am I dumb?
fallen heath
a = 2, b = 3, a = a+b (5), b = 1, a = a-b (4) , return a
crisp pendant
Ah I see what I did wrong
brisk zenith
you know you're in deep shit if you see <generator object <lambda>.<locals>.<lambda>.<locals>.<lambda>.<locals>.<genexpr> at 0x7fdedf8f3660> in your output.
pure dew
lmao wtf