zzzeek

import asyncio
import contextlib
import random

import yappi

# install sqlalchemy from github master:
# pip install git+https://github.com/sqlalchemy/sqlalchemy/
from sqlalchemy import cast
from sqlalchemy import Column

zzzeek

import asyncio
import contextlib
import cProfile
import io
import pstats
import random

from sqlalchemy import cast
from sqlalchemy import Column
from sqlalchemy import Integer

zzzeek

import sys
import re

reg = re.compile(
    r'select\([\s]*\[([^\[\]]+?)\][\s]*\)', re.S
)
for file in sys.argv[1:]:
    with open(file, 'r') as file_:
        newfile = reg.sub(
            lambda m: "select(%s)" % m.group(1),

zzzeek

"""This is a simpler version of the greenlet
example at https://gist.github.com/zzzeek/4e89ce6226826e7a8df13e1b573ad354

Instead of the "await" keyword, we use the "await_()" function to interact with
the greenlet context. the greenlet context itself is 23 lines of code right
here.

"""

import asyncio

zzzeek

"""This is a simpler version of the greenlet
example at https://gist.github.com/zzzeek/4e89ce6226826e7a8df13e1b573ad354

Instead of the "await" keyword, we use the "await_()" function to interact with
the greenlet context. the greenlet context itself is 23 lines of code right
here.

"""

import asyncio

zzzeek

# https://gist.github.com/zzzeek/f5ac058e30e192f11160ffb52f5224fa incorporated by reference

import asyncio
import contextvars
import sys

import greenlet


current_greenlet_context = contextvars.ContextVar("current greenlet context")

zzzeek

import asyncio
import contextvars
import sys

import asyncpg
import greenlet


current_greenlet_context = contextvars.ContextVar("current greenlet context")

zzzeek

import asyncio
import contextvars
import sys

import greenlet


current_greenlet_context = contextvars.ContextVar("current greenlet context")

zzzeek

This is a cross post of something I just posted on the Python bug tracker at https://bugs.python.org/msg373145.

I seem to have two cents to offer so here it is. An obscure issue in the Python bug tracker is probably not the right place for this so consider this as an early draft of something that maybe I'll talk about more elsewhere.

> This basically divides code into two islands - async and non-async

zzzeek

"""This program is exactly the same as that of

https://gist.github.com/zzzeek/33943060f7a08cf9e82bf8df1f0f75de ,
with the exception that the add_and_select_data function is written in
synchronous style.

UPDATED!!   now includes refinements by @snaury and @Caselit .  SIMPLER
AND FASTER!!