mezhaka

#!/usr/bin/env python3.4
import cProfile
import pstats


def first():
    pass


def second():

mezhaka

# Show threadpool processes only max_workers tasks at the same time and behaves
# like a queue
import itertools
from concurrent import futures
from io import StringIO
from time import sleep


def print_sleep_print(p, out):
    print("(", file=out, end="")

mezhaka

# A snippet to show that pymongo / mongo converts timezone aware datetime objects to UTC, when saving.

# docker run --env MONGO_INITDB_DATABASE=brain --env MONGO_INITDB_ROOT_USERNAME=root --env MONGO_INITDB_ROOT_PASSWORD=secret --publish-all mongo:4.2
#
# lookup which port it was mapped to:
# $ docker container ls
# CONTAINER ID   IMAGE       COMMAND                  CREATED         STATUS         PORTS                      NAMES
# 8eaf2dd5aedb   mongo:4.2   "docker-entrypoint.s…"   6 minutes ago   Up 6 minutes   0.0.0.0:55000->27017/tcp   brave_moser

import datetime

mezhaka

# Motivation: I had to use standard tarfile to create an archive within an async function.
# def pack(f):
#     with tarfile.open(output, "w:gz") as tar:
#         tar.add(src_dir, arcname="blah")
#
# async with temp_file() as f:
#     asyncio.get_running_loop().run_in_executor(None, pack, f)

@contextlib.asynccontextmanager
async def temp_file() -> Iterator[pathlib.Path]: