import asyncio
import subprocess

cmd = ["python", "-c", r"""print("foo\nAa\u0100\u0101\u0102\u0103\u0104\u0105", end="")"""]


def test_sync(enc=None, err=None):
    process = subprocess.run(cmd, stdout=subprocess.PIPE, encoding=enc, errors=err)
    print(process.stdout)


def test_asyncio(enc=None, err=None):
    async def read():
        process = await asyncio.create_subprocess_exec(*cmd, stdout=asyncio.subprocess.PIPE, encoding=enc, errors=err)
        first_line = await process.stdout.readline()
        remainder, _ = await process.communicate()
        print(first_line + remainder)
    loop = asyncio.get_event_loop()
    try:
        loop.run_until_complete(read())
    finally:
        loop.run_until_complete(loop.shutdown_asyncgens())


test_sync()
test_sync("utf-8")
test_sync("ascii", "ignore")

test_asyncio()
test_asyncio("utf-8")
test_asyncio("ascii", "ignore")