coroutine experiment in python and go

co.go

package main

import (
	"fmt"
	"time"
)

func a() string {
	fmt.Println("b")
	go func() {
		time.Sleep(time.Second)
		fmt.Println("a")
	}()
	return "return a"
}

func main() {
	fmt.Println(a())
	time.Sleep(5 * time.Second)
	fmt.Println("end")
}

co.py

import asyncio

async def a():
    print("b")

    async def async_inner():
        await asyncio.sleep(1)
        print("a")

    asyncio.create_task(async_inner())
    return "return a"

async def main():
    result = await a()
    print(result)
    await asyncio.sleep(5)
    print("end")

# Run the asynchronous main function
asyncio.run(main())