Python 将文件从ZIP直接解压缩到另一个ZIP

我的目标是从Zip存档中提取某些文件，并将它们直接流式传输到另一个Zip，而无需对磁盘执行中间提取

到目前为止，我已经：

from zipfile import ZipFile, ZIP_DEFLATED


def stream_conents(src_zip, dst_zip, file_subset_list):
    with ZipFile(src_zip, "r", compression=ZIP_DEFLATED) as src_zip_archive:
        with ZipFile(dst_zip, "w", compression=ZIP_DEFLATED) as dst_zip_archive:
            for zitem in src_zip_archive.namelist():
                if zitem in file_subset_list:
                    zitem_object = src_zip_archive.open(zitem)
                    dst_zip_archive.write(zitem_object, zitem, )

---

但它只是抛出了

TypeError：参数应该是字符串、字节或整数，而不是ZipExtFile

您可以将整个文件读入内存，并使用

writestr

写入存档文件

def stream_conents(src_zip, dst_zip, file_subset_list):
    with ZipFile(src_zip, "r", compression=ZIP_DEFLATED) as src_zip_archive:
        with ZipFile(dst_zip, "w", compression=ZIP_DEFLATED) as dst_zip_archive:
            for zitem in src_zip_archive.namelist():
                if zitem in file_subset_list:
                    # warning, may blow up memory
                    dst_zip_archive.writestr(zitem,
                        src_zip_archive.read(zitem))

从python 3.6开始，

ZipFile.open

将以写入模式打开归档文件。这样可以将文件分块写入，并减少总体内存使用

def stream_conents(src_zip, dst_zip, file_subset_list):
    with ZipFile(src_zip, "r", compression=ZIP_DEFLATED) as src_zip_archive:
        with ZipFile(dst_zip, "w", compression=ZIP_DEFLATED) as dst_zip_archive:
            for zitem in src_zip_archive.namelist():
                if zitem in file_subset_list:
                    if sys.version_info >= (3, 6):
                        with src_zip_archive.open(zitem) as from_item:
                            with dst_zip_archive.open(zitem, "w") as to_item:
                                shutil.copyfileobj(from_item, to_item)
                    else:
                        # warning, may blow up memory
                        dst_zip_archive.writestr(zitem, 
                            src_zip_archive.read(zitem))

---

你就不能复制zip文件吗？@Okx不，因为我只想从

file\u subset\u list