如何使用python将大文件从源文件分块复制到目标文件？

Question

The file can be say 20GB. The traditional approach of importing,reading a file and then writing to another file is not feasible.

Answer 1

The shutil module has a function designed for this purpose:

import shutil
shutil.copy(src, dst)

Answer 2

For file-like objects (buffers, request bodies, etc.) you can use shutil.copyfileobj

with open('path/to/dest.file', 'wb') as dst:
    shutil.copyfileobj(source_file_like_object, dst)