Btukfyl

I have a script which creates a closed in-memory ZipFile object that I need to post as a bytestring (using requests); how do I do that? I have tried opening the file, which fails with "TypeError: expected str, bytes or os.PathLike object, not ZipFile"

The script works just fine if I write the ZipFile to a file and then open that file for the post data. However it will probably iterate over a couple million files, and that seems like a lot of temp files, and disk activity.

import io

import zipfile

from PIL import Image



z = io.BytesIO()

zfile = zipfile.ZipFile(z,"a")



zipdict = {}



img_loc = "D:/Images/seasons-3.jpg"

im_original = Image.open(img_loc)

imfmt = im_original.format

im = im_original.copy()

im_original.close()

im_out = io.BytesIO()

im.save(im_out,imfmt)

zfile.writestr("seasons-3.jpg",im_out.getvalue())

im_out.close()

zipdict['seasons-3']=zfile

zfile.close()

running with error:

Python 3.6.3 (v3.6.3:2c5fed8, Oct  3 2017, 18:11:49) [MSC v.1900 64 bit (AMD64)] on win32

Type "copyright", "credits" or "license()" for more information.

>>> 

>>> zipdict['seasons-3']

<zipfile.ZipFile [closed]>

>>> pl_data = open(zipdict['seasons-3'])

Traceback (most recent call last):

  File "<pyshell#1>", line 1, in <module>

    pl_data = open(zipdict['seasons-3'])

TypeError: expected str, bytes or os.PathLike object, not ZipFile

>>> 

zfile is closed. It's useless to you. The thing you need to use now is z, the file-like object that was managing the underlying binary storage for the ZipFile.

You can use z.getvalue() to get a bytestring representing the contents of z, just like you did with im_out, or you can seek back to the beginning with z.seek(0) and use it with the parts of requests that take file-like objects.