copy django FileFiled object to tempfile

sample.py

import shutil
import tempfile

from app.models import Record

# %%

%%time
with tempfile.NamedTemporaryFile() as tmp:
    record = Record.objects.first()
    tmp.write(record.datafile.read())

# %%

%%time
with tempfile.NamedTemporaryFile() as tmp:
    record = Record.objects.first()
    with record.datafile.open() as src:
        shutil.copyfileobj(src, tmp)