koi8-r

import asyncio


def reader() -> None:
    for _ in range(3):
        print("next", end=" ")
        try:
            r = yield None
        except ValueError:
            pass

koi8-r

given = "abcdef"
it = iter(given)
res = [(a + b) for a,b in zip(it, it)]
assert ['ab', 'cd', 'ef'] == "".join(res)

koi8-r

m = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
ll = [i for l in m for i in l]
assert list(range(1, 10)) == ll

koi8-r

import weakref

class A: ...

def test_() -> None:
    o = A()
    ref = weakref.ref(o)
    assert ref() is not None
    del o
    assert ref() is None

koi8-r

def fake() -> None:
    print("fake")

@lambda this: fake
def x() -> None:
    pass

koi8-r

from typing import TypeAlias, TypeVar


T = TypeVar("T")
Tuple6: TypeAlias = tuple[T, T, T, T, T, T]

OCTET_MAX = 0xFF


def parse(octets: Tuple6[str]) -> int:  # like: int(str, 16)

koi8-r

---
x-logging: &logging
  driver: json-file
  options:
    max-size: 1m
    max-file: 3
    compress: 'true'

services:
  linux:

koi8-r

# STM32F411CEU6: 100MHz Arm Cortex-M4 core with DSP and FPU, 512KB Flash, 128KB SRAM, ART Accelerator
# https://stm32-base.org/boards/STM32F411CEU6-WeAct-Black-Pill-V2.0.html

# increase working area to 128KB
set WORKAREASIZE 0x20000
set CHIPNAME STM32F411CEU6

source [find interface/stlink.cfg]
# source [find interface/stlink-dap.cfg]
# source [find interface/stlink-v2-1.cfg]

koi8-r

Add
    scrub on bridge100 all min-ttl 65
to
    '/etc/pf.conf'

Reload with
    sudo pfctl -f /etc/pf.conf
    
Check with
    sudo pfctl -sa

koi8-r

task = asyncio.create_task(read_output())
handler = event_loop().call_later(2, cancel_asyncio_task, task)
task.add_done_callback(lambda _: handler.cancel())
await task