import asyncio
import asyncpg
import time

COUNT = 5_000

async def run():
    conn = await asyncpg.connect("postgresql://user:password@localhost/postgres")

    await conn.execute("CREATE TABLE IF NOT EXISTS users (id SERIAL PRIMARY KEY, username TEXT, email TEXT, age INT)")

    RECORDS = [("John Doe", "john.doe@example.com", 42)] * 10_000

    start = time.perf_counter()
    for _ in range(COUNT):
        await conn.copy_records_to_table("users",  records=RECORDS,  columns=["username", "email", "age"])
    end = time.perf_counter()

    await conn.close()

    return end - start


if __name__ == "__main__":
    total = asyncio.run(run())
    print(f"Total time: {total:.5f} seconds")
    print(f"Average time per loop: {total / COUNT:.8f} seconds")