Question

我使用以下代码动态生成许多csv文件：

import csv
fieldnames = ['foo1', 'foo2', 'foo3', 'foo4']
with open(csvfilepath, 'wb') as csvfile:
    csvwrite = csv.DictWriter(csvfile, delimiter=',', fieldnames=fieldnames)
    csvwrite.writeheader()
    for row in data:
        csvwrite.writerow(row)

为了节省空间，我想压缩它们使用gzip模块非常简单：

with gzip.open("foo.gz", "w") as csvfile :
    csvwrite = csv.DictWriter(csvfile, delimiter=',', fieldnames=fieldnames)
    csvwrite.writeheader()
    for row in data:
        csvwrite.writerow(row)

但我希望文件采用'zip'格式。

我尝试了zipfile模块，但我无法直接将文件写入zip存档。

相反，我必须将csv文件写入磁盘，使用以下代码在zip文件中压缩它们，然后删除csv文件。

with ZipFile(zipfilepath, 'w') as zipfile:
    zipfile.write(csvfilepath, csvfilename, ZIP_DEFLATED)

如何将csv文件直接写入类似于gzip的压缩zip？

Answer 1

使用cStringIO.StringIO对象模仿文件：

with ZipFile(your_zip_file, 'w', ZIP_DEFLATED) as zip_file:
    string_buffer = StringIO()
    writer = csv.writer(string_buffer)

    # Write data using the writer object.

    zip_file.writestr(filename + '.csv', string_buffer.getvalue())

Answer 2

谢谢kroolik 只需稍加修改即可完成。

with ZipFile(your_zip_file, 'w', ZIP_DEFLATED) as zip_file:
    string_buffer = StringIO()
    csvwriter = csv.DictWriter(string_buffer, delimiter=',', fieldnames=fieldnames)
    csvwrite.writeheader()
    for row in cdrdata:
        csvwrite.writerow(row)
    zip_file.writestr(filename + '.csv', string_buffer.getvalue())

如何直接将csv文件压缩成zip存档？

2 个答案: