python: op.write() seems have memory leak

[Xuanwo]

Write a 2GiB file will need 6GiB memory.

import opendal
import asyncio
import gc

op = opendal.AsyncOperator("s3", xxx)
print(f"operator: {op}")

async def w2minio(f):
    fd = open(f,'rb')
    await op.write(f, fd.read())
    fd.close()
    gc.collect()
    print("end")

for i in range(3,7):
    f=f"x{i}"
    print(f)
    asyncio.run(w2minio(f))

[wubx]

[messense]

Probably caused by PyO3/pyo3#1056

[Xuanwo]

We have File support now. Let's close.