python async vs sync

exemplo.py

import asyncio
from time import time

import httpx

url = 'https://api.coindesk.com/v1/bpi/currentprice.json'

async def busca_bitcoin():
  async with httpx.AsyncClient() as client:
    print((await client.get(url)).text)

async def main(lento):
  tasks = []
  for i in range(10):
    tasks.append(busca_bitcoin())

  inicio = time()
  
  if lento:
    for task in tasks:
      await task
  else:
    await asyncio.gather(*tasks)

  print('Time:', time()-inicio)

if __name__ == '__main__':
    asyncio.run(main(lento=True))